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SAR(1)                                                 Linux User's Manual                                                SAR(1)

NAME
       sar - Collect, report, or save system activity information.

SYNOPSIS
       sar [ -A ] [ -B ] [ -b ] [ -C ] [ -D ] [ -d ] [ -F [ MOUNT ] ] [ -H ] [ -h ] [ -p ] [ -q ] [ -r [ ALL ] ] [ -S ] [ -t ] [
       -u [ ALL ] ] [ -V ] [ -v ] [ -W ] [ -w ] [ -y ] [ -z ] [ --dec={ 0 | 1 | 2 } ] [ --dev= dev_list ] [ --fs=  fs_list  ]  [
       --help  ] [ --human ] [ --iface= iface_list ] [ --sadc ] [ -I { int_list | SUM | ALL } ] [ -P { cpu_list | ALL } ] [ -m {
       keyword [,...] | ALL } ] [ -n { keyword [,...] | ALL } ] [ -j { ID | LABEL | PATH | UUID | ... } ] [ -f [ filename ] | -o
       [ filename ] | -[0-9]+ ] [ -i interval ] [ -s [ hh:mm[:ss] ] ] [ -e [ hh:mm[:ss] ] ] [ interval [ count ] ]

DESCRIPTION
       The  sar command writes to standard output the contents of selected cumulative activity counters in the operating system.
       The accounting system, based on the values in the count and interval parameters, writes information the specified  number
       of  times  spaced  at the specified intervals in seconds.  If the interval parameter is set to zero, the sar command dis

       plays the average statistics for the time since the system was started. If the interval parameter  is  specified  without
       the count parameter, then reports are generated continuously.  The collected data can also be saved in the file specified
       by the -o filename flag, in addition to being displayed onto the screen. If filename is omitted, sar  uses  the  standard
       system  activity  daily  data  file (see below).  By default all the data available from the kernel are saved in the data
       file.

       The sar command extracts and writes to standard output records previously saved in a file. This file can  be  either  the
       one  specified by the -f flag or, by default, the standard system activity daily data file.  It is also possible to enter
       -1, -2 etc. as an argument to sar to display data of that days ago. For example, -1 will point at the standard system ac

       tivity file of yesterday.

       Standard  system  activity  daily data files are named saDD or saYYYYMMDD, where YYYY stands for the current year, MM for
       the current month and DD for the current day. They are the default files used by sar only when no filename has  been  ex

       plicitly specified.  When used to write data to files (with its option -o), sar will use saYYYYMMDD if option -D has also
       been specified, else it will use saDD.  When used to display the records previously saved in a file, sar  will  look  for
       the most recent of saDD and saYYYYMMDD, and use it.

       Standard system activity daily data files are located in the /var/log/sysstat directory by default. Yet it is possible to
       specify an alternate location for them: If a directory (instead of a plain file) is used with options -f or  -o  then  it
       will be considered as the directory containing the data files.

       Without  the  -P flag, the sar command reports system-wide (global among all processors) statistics, which are calculated
       as averages for values expressed as percentages, and as sums otherwise. If the -P flag is given, the sar command  reports
       activity  which  relates to the specified processor or processors. If -P ALL is given, the sar command reports statistics
       for each individual processor and global statistics among all processors. Offline processors are not displayed.

       You can select information about specific system activities using flags. Not specifying any flags selects only CPU activ

       ity.  Specifying the -A flag selects all possible activities.

       The default version of the sar command (CPU utilization report) might be one of the first facilities the user runs to be

       gin system activity investigation, because it monitors major system resources. If CPU utilization  is  near  100  percent
       (user + nice + system), the workload sampled is CPU-bound.

       If  multiple  samples  and  multiple reports are desired, it is convenient to specify an output file for the sar command.
       Run the sar command as a background process. The syntax for this is:

       sar -o datafile interval count >/dev/null 2>&1 &

       All data are captured in binary form and saved to a file (datafile).  The data can then be selectively displayed with the
       sar  command using the -f option. Set the interval and count parameters to select count records at interval second inter

       vals. If the count parameter is not set, all the records saved in the file will be selected.  Collection of data in  this
       manner is useful to characterize system usage over a period of time and determine peak usage hours.

       Note:     The sar command only reports on local activities.

OPTIONS
       -A     This is equivalent to specifying -bBdFHqSuvwWy -I SUM -I ALL -m ALL -n ALL -r ALL -u ALL -P ALL.

       -B     Report paging statistics.  The following values are displayed:

              pgpgin/s
                     Total number of kilobytes the system paged in from disk per second.

              pgpgout/s
                     Total number of kilobytes the system paged out to disk per second.

              fault/s
                     Number  of  page  faults (major + minor) made by the system per second.  This is not a count of page faults
                     that generate I/O, because some page faults can be resolved without I/O.

              majflt/s
                     Number of major faults the system has made per second, those which have required loading a memory page from
                     disk.

              pgfree/s
                     Number of pages placed on the free list by the system per second.

              pgscank/s
                     Number of pages scanned by the kswapd daemon per second.

              pgscand/s
                     Number of pages scanned directly per second.

              pgsteal/s
                     Number  of  pages  the  system has reclaimed from cache (pagecache and swapcache) per second to satisfy its
                     memory demands.

              %vmeff
                     Calculated as pgsteal / pgscan, this is a metric of the efficiency of page reclaim. If it is near 100% then
                     almost  every  page coming off the tail of the inactive list is being reaped. If it gets too low (e.g. less
                     than 30%) then the virtual memory is having some difficulty.  This field is displayed as zero if  no  pages
                     have been scanned during the interval of time.

       -b     Report I/O and transfer rate statistics.  The following values are displayed:

              tps
                     Total number of transfers per second that were issued to physical devices.  A transfer is an I/O request to
                     a physical device. Multiple logical requests can be combined into a single I/O request to  the  device.   A
                     transfer is of indeterminate size.

              rtps
                     Total number of read requests per second issued to physical devices.

              wtps
                     Total number of write requests per second issued to physical devices.

              bread/s
                     Total  amount  of  data  read  from the devices in blocks per second.  Blocks are equivalent to sectors and
                     therefore have a size of 512 bytes.

              bwrtn/s
                     Total amount of data written to devices in blocks per second.

       -C     When reading data from a file, tell sar to display comments that have been inserted by sadc.

       -D     Use saYYYYMMDD instead of saDD as the standard system activity daily data file name. This option works  only  when
              used in conjunction with option -o to save data to file.

       -d     Report activity for each block device.  When data are displayed, the device specification devM-n is generally used
              (DEV column).  M is the major  number  of  the  device  and  n  its  minor  number.   Device  names  may  also  be
              pretty-printed  if  option  -p is used or persistent device names can be printed if option -j is used (see below).
              Statistics for all devices are displayed unless a restricted list is specified using  option  --dev=  (see  corre

              sponding option entry).  Note that disk activity depends on sadc options -S DISK and -S XDISK to be collected. The
              following values are displayed:

              tps
                     Total number of transfers per second that were issued to physical devices.  A transfer is an I/O request to
                     a  physical  device.  Multiple logical requests can be combined into a single I/O request to the device.  A
                     transfer is of indeterminate size.

              rkB/s
                     Number of kilobytes read from the device per second.

              wkB/s
                     Number of kilobytes written to the device per second.

              areq-sz
                     The average size (in kilobytes) of the I/O requests that were issued to the device.
                     Note: In previous versions, this field was known as avgrq-sz and was expressed in sectors.

              aqu-sz
                     The average queue length of the requests that were issued to the device.
                     Note: In previous versions, this field was known as avgqu-sz.

              await
                     The average time (in milliseconds) for I/O requests issued to the device to be served.  This  includes  the
                     time spent by the requests in queue and the time spent servicing them.

              svctm
                     The average service time (in milliseconds) for I/O requests that were issued to the device. Warning! Do not
                     trust this field any more. This field will be removed in a future sysstat version.

              %util
                     Percentage of elapsed time during which I/O requests were issued to the device (bandwidth  utilization  for
                     the  device).  Device saturation occurs when this value is close to 100% for devices serving requests seri

                     ally. But for devices serving requests in parallel, such as RAID arrays and modern SSDs, this  number  does
                     not reflect their performance limits.

       --dec={ 0 | 1 | 2 }
              Specify the number of decimal places to use (0 to 2, default value is 2).

       --dev=dev_list
              Specify  the block devices for which statistics are to be displayed by sar.  dev_list is a list of comma-separated
              device names.

       -e [ hh:mm[:ss] ]
              Set the ending time of the report. The default ending time is 18:00:00. Hours must be  given  in  24-hour  format.
              This option can be used when data are read from or written to a file (options -f or -o).

       -F [ MOUNT ]
              Display  statistics  for  currently mounted filesystems. Pseudo-filesystems are ignored. At the end of the report,
              sar will display a summary of all those filesystems.  Use of the MOUNT parameter keyword indicates that mountpoint
              will  be  reported  instead of filesystem device. Statistics for all filesystems are displayed unless a restricted
              list is specified using option --fs= (see corresponding option entry).  Note that filesystems statistics depend on
              sadc option -S XDISK to be collected.

              The following values are displayed:

              MBfsfree
                     Total amount of free space in megabytes (including space available only to privileged user).

              MBfsused
                     Total amount of space used in megabytes.

              %fsused
                     Percentage of filesystem space used, as seen by a privileged user.

              %ufsused
                     Percentage of filesystem space used, as seen by an unprivileged user.

              Ifree
                     Total number of free file nodes in filesystem.

              Iused
                     Total number of file nodes used in filesystem.

              %Iused
                     Percentage of file nodes used in filesystem.

       -f [ filename ]
              Extract  records  from  filename (created by the -o filename flag). The default value of the filename parameter is
              the current standard system activity daily data file.  If filename is a directory instead of a plain file then  it
              is  considered  as the directory where the standard system activity daily data files are located. The -f option is
              exclusive of the -o option.

       --fs=fs_list
              Specify the filesystems for which statistics are to be displayed by sar.  fs_list is  a  list  of  comma-separated
              filesystem names or mountpoints.

       -H     Report hugepages utilization statistics.  The following values are displayed:

              kbhugfree
                     Amount of hugepages memory in kilobytes that is not yet allocated.

              kbhugused
                     Amount of hugepages memory in kilobytes that has been allocated.

              %hugused
                     Percentage of total hugepages memory that has been allocated.

       -h     Make  the  output  of  sar easier to read by a human. Options --human and -p (pretty-print) are enabled implicitly
              with this option.  This option may be especially useful when displaying e.g., network interfaces or block  devices
              statistics.

       --help Display a short help message then exit.

       --human
              Print  sizes  in human readable format (e.g. 1.0k, 1.2M, etc.)  The units displayed with this option supersede any
              other default units (e.g.  kilobytes, sectors...) associated with the metrics.

       -I { int_list | SUM | ALL }
              Report statistics for interrupts.  int_list is a  list  of  comma-separated  values  or  range  of  values  (e.g.,
              0-16,35,400-).   The  SUM  keyword indicates that the total number of interrupts received per second is to be dis

              played. The ALL keyword indicates that statistics from all interrupts, including potential APIC interrupt sources,
              are to be reported.  Note that interrupt statistics depend on sadc option "-S INT" to be collected.

       -i interval
              Select data records at seconds as close as possible to the number specified by the interval parameter.

       --iface=iface_list
              Specify  the  network  interfaces  for  which  statistics  are  to  be  displayed by sar.  iface_list is a list of
              comma-separated interface names.

       -j { ID | LABEL | PATH | UUID | ... }
              Display persistent device names. Use this option in conjunction with option -d.  Options ID, LABEL,  etc.  specify
              the  type of the persistent name. These options are not limited, only prerequisite is that directory with required
              persistent names is present in /dev/disk.  If persistent name is not found for the  device,  the  device  name  is
              pretty-printed (see option -p below).

       -m { keyword [,...] | ALL }
              Report  power  management  statistics.   Note  that these statistics depend on sadc's option "-S POWER" to be col

              lected.

              Possible keywords are CPU, FAN, FREQ, IN, TEMP and USB.

              With the CPU keyword, statistics about CPU are reported.  The following value is displayed:

              MHz
                     Instantaneous CPU clock frequency in MHz.

              With the FAN keyword, statistics about fans speed are reported.  The following values are displayed:

              rpm
                     Fan speed expressed in revolutions per minute.

              drpm
                     This field is calculated as the difference between current fan speed (rpm) and its low limit (fan_min).

              DEVICE
                     Sensor device name.

              With the FREQ keyword, statistics about CPU clock frequency are reported.  The following value is displayed:

              wghMHz
                     Weighted average CPU clock frequency in MHz.  Note that the cpufreq-stats driver must be  compiled  in  the
                     kernel for this option to work.

              With the IN keyword, statistics about voltage inputs are reported.  The following values are displayed:

              inV
                     Voltage input expressed in Volts.

              %in
                     Relative  input value. A value of 100% means that voltage input has reached its high limit (in_max) whereas
                     a value of 0% means that it has reached its low limit (in_min).

              DEVICE
                     Sensor device name.

              With the TEMP keyword, statistics about devices temperature are reported.  The following values are displayed:

              degC
                     Device temperature expressed in degrees Celsius.

              %temp
                     Relative device temperature. A value of 100% means that temperature has reached its high limit (temp_max).

              DEVICE
                     Sensor device name.

              With the USB keyword, the sar command takes a snapshot of all the USB devices currently plugged into  the  system.
              At  the  end  of  the  report, sar will display a summary of all those USB devices.  The following values are dis

              played:

              BUS
                     Root hub number of the USB device.

              idvendor
                     Vendor ID number (assigned by USB organization).

              idprod
                     Product ID number (assigned by Manufacturer).

              maxpower
                     Maximum power consumption of the device (expressed in mA).

              manufact
                     Manufacturer name.

              product
                     Product name.

              The ALL keyword is equivalent to specifying all the keywords above and therefore all the power management  statis

              tics are reported.

       -n { keyword [,...] | ALL }
              Report network statistics.

              Possible keywords are DEV, EDEV, FC, ICMP, EICMP, ICMP6, EICMP6, IP, EIP, IP6, EIP6, NFS, NFSD, SOCK, SOCK6, SOFT,
              TCP, ETCP, UDP and UDP6.

              With the DEV keyword, statistics from the network devices are reported.  Statistics for all network interfaces are
              displayed  unless a restricted list is specified using option --iface= (see corresponding option entry).  The fol

              lowing values are displayed:

              IFACE
                     Name of the network interface for which statistics are reported.

              rxpck/s
                     Total number of packets received per second.

              txpck/s
                     Total number of packets transmitted per second.

              rxkB/s
                     Total number of kilobytes received per second.

              txkB/s
                     Total number of kilobytes transmitted per second.

              rxcmp/s
                     Number of compressed packets received per second (for cslip etc.).

              txcmp/s
                     Number of compressed packets transmitted per second.

              rxmcst/s
                     Number of multicast packets received per second.

              %ifutil
                     Utilization percentage of the network interface. For half-duplex interfaces, utilization is calculated  us

                     ing  the  sum  of  rxkB/s  and  txkB/s as a percentage of the interface speed. For full-duplex, this is the
                     greater of rxkB/S or txkB/s.

              With the EDEV keyword, statistics on failures (errors) from the network devices are reported.  Statistics for  all
              network  interfaces  are  displayed unless a restricted list is specified using option --iface= (see corresponding
              option entry).  The following values are displayed:

              IFACE
                     Name of the network interface for which statistics are reported.

              rxerr/s
                     Total number of bad packets received per second.

              txerr/s
                     Total number of errors that happened per second while transmitting packets.

              coll/s
                     Number of collisions that happened per second while transmitting packets.

              rxdrop/s
                     Number of received packets dropped per second because of a lack of space in linux buffers.

              txdrop/s
                     Number of transmitted packets dropped per second because of a lack of space in linux buffers.

              txcarr/s
                     Number of carrier-errors that happened per second while transmitting packets.

              rxfram/s
                     Number of frame alignment errors that happened per second on received packets.

              rxfifo/s
                     Number of FIFO overrun errors that happened per second on received packets.

              txfifo/s
                     Number of FIFO overrun errors that happened per second on transmitted packets.

              With the FC keyword, statistics about fibre channel traffic are reported.  Note that fibre channel statistics  de

              pend on sadc's option "-S DISK" to be collected.  The following values are displayed:

              FCHOST
                     Name of the fibre channel host bus adapter (HBA) interface for which statistics are reported.

              fch_rxf/s
                     The total number of frames received per second.

              fch_txf/s
                     The total number of frames transmitted per second.

              fch_rxw/s
                     The total number of transmission words received per second.

              fch_txw/s
                     The total number of transmission words transmitted per second.

              With  the  ICMP keyword, statistics about ICMPv4 network traffic are reported.  Note that ICMPv4 statistics depend
              on sadc's option "-S SNMP" to be collected.  The following values are displayed (formal SNMP names between  square
              brackets):

              imsg/s
                     The  total  number  of  ICMP  messages  which  the entity received per second [icmpInMsgs].  Note that this
                     counter includes all those counted by ierr/s.

              omsg/s
                     The total number of ICMP messages which this entity attempted to send per second [icmpOutMsgs].  Note  that
                     this counter includes all those counted by oerr/s.

              iech/s
                     The number of ICMP Echo (request) messages received per second [icmpInEchos].

              iechr/s
                     The number of ICMP Echo Reply messages received per second [icmpInEchoReps].

              oech/s
                     The number of ICMP Echo (request) messages sent per second [icmpOutEchos].

              oechr/s
                     The number of ICMP Echo Reply messages sent per second [icmpOutEchoReps].

              itm/s
                     The number of ICMP Timestamp (request) messages received per second [icmpInTimestamps].

              itmr/s
                     The number of ICMP Timestamp Reply messages received per second [icmpInTimestampReps].

              otm/s
                     The number of ICMP Timestamp (request) messages sent per second [icmpOutTimestamps].

              otmr/s
                     The number of ICMP Timestamp Reply messages sent per second [icmpOutTimestampReps].

              iadrmk/s
                     The number of ICMP Address Mask Request messages received per second [icmpInAddrMasks].

              iadrmkr/s
                     The number of ICMP Address Mask Reply messages received per second [icmpInAddrMaskReps].

              oadrmk/s
                     The number of ICMP Address Mask Request messages sent per second [icmpOutAddrMasks].

              oadrmkr/s
                     The number of ICMP Address Mask Reply messages sent per second [icmpOutAddrMaskReps].

              With  the  EICMP keyword, statistics about ICMPv4 error messages are reported.  Note that ICMPv4 statistics depend
              on sadc's option "-S SNMP" to be collected.  The following values are displayed (formal SNMP names between  square
              brackets):

              ierr/s
                     The number of ICMP messages per second which the entity received but determined as having ICMP-specific er

                     rors (bad ICMP checksums, bad length, etc.) [icmpInErrors].

              oerr/s
                     The number of ICMP messages per second which this entity did not send due  to  problems  discovered  within
                     ICMP such as a lack of buffers [icmpOutErrors].

              idstunr/s
                     The number of ICMP Destination Unreachable messages received per second [icmpInDestUnreachs].

              odstunr/s
                     The number of ICMP Destination Unreachable messages sent per second [icmpOutDestUnreachs].

              itmex/s
                     The number of ICMP Time Exceeded messages received per second [icmpInTimeExcds].

              otmex/s
                     The number of ICMP Time Exceeded messages sent per second [icmpOutTimeExcds].

              iparmpb/s
                     The number of ICMP Parameter Problem messages received per second [icmpInParmProbs].

              oparmpb/s
                     The number of ICMP Parameter Problem messages sent per second [icmpOutParmProbs].

              isrcq/s
                     The number of ICMP Source Quench messages received per second [icmpInSrcQuenchs].

              osrcq/s
                     The number of ICMP Source Quench messages sent per second [icmpOutSrcQuenchs].

              iredir/s
                     The number of ICMP Redirect messages received per second [icmpInRedirects].

              oredir/s
                     The number of ICMP Redirect messages sent per second [icmpOutRedirects].

              With  the ICMP6 keyword, statistics about ICMPv6 network traffic are reported.  Note that ICMPv6 statistics depend
              on sadc's option "-S IPV6" to be collected.  The following values are displayed (formal SNMP names between  square
              brackets):

              imsg6/s
                     The  total number of ICMP messages received by the interface per second which includes all those counted by
                     ierr6/s [ipv6IfIcmpInMsgs].

              omsg6/s
                     The total number of ICMP messages which this interface attempted to send per second [ipv6IfIcmpOutMsgs].

              iech6/s
                     The number of ICMP Echo (request) messages received by the interface per second [ipv6IfIcmpInEchos].

              iechr6/s
                     The number of ICMP Echo Reply messages received by the interface per second [ipv6IfIcmpInEchoReplies].

              oechr6/s
                     The number of ICMP Echo Reply messages sent by the interface per second [ipv6IfIcmpOutEchoReplies].

              igmbq6/s
                     The number of ICMPv6 Group Membership Query messages received by the interface  per  second  [ipv6IfIcmpIn

                     GroupMembQueries].

              igmbr6/s
                     The number of ICMPv6 Group Membership Response messages received by the interface per second [ipv6IfIcmpIn

                     GroupMembResponses].

              ogmbr6/s
                     The number of ICMPv6 Group Membership Response messages sent per second [ipv6IfIcmpOutGroupMembResponses].

              igmbrd6/s
                     The number of ICMPv6 Group Membership Reduction messages received by the interface per second  [ipv6IfIcmp

                     InGroupMembReductions].

              ogmbrd6/s
                     The  number  of  ICMPv6  Group  Membership Reduction messages sent per second [ipv6IfIcmpOutGroupMembReduc

                     tions].

              irtsol6/s
                     The number of ICMP Router Solicit messages received by the interface per  second  [ipv6IfIcmpInRouterSolic

                     its].

              ortsol6/s
                     The number of ICMP Router Solicitation messages sent by the interface per second [ipv6IfIcmpOutRouterSolic

                     its].

              irtad6/s
                     The number of ICMP Router Advertisement messages received by the interface per second  [ipv6IfIcmpInRouter

                     Advertisements].

              inbsol6/s
                     The  number of ICMP Neighbor Solicit messages received by the interface per second [ipv6IfIcmpInNeighborSo

                     licits].

              onbsol6/s
                     The number of ICMP Neighbor Solicitation messages sent by the interface per second  [ipv6IfIcmpOutNeighbor

                     Solicits].

              inbad6/s
                     The  number  of  ICMP  Neighbor  Advertisement messages received by the interface per second [ipv6IfIcmpIn

                     NeighborAdvertisements].

              onbad6/s
                     The number of ICMP Neighbor Advertisement messages sent by the interface per second  [ipv6IfIcmpOutNeighbo

                     rAdvertisements].

              With  the EICMP6 keyword, statistics about ICMPv6 error messages are reported.  Note that ICMPv6 statistics depend
              on sadc's option "-S IPV6" to be collected.  The following values are displayed (formal SNMP names between  square
              brackets):

              ierr6/s
                     The  number of ICMP messages per second which the interface received but determined as having ICMP-specific
                     errors (bad ICMP checksums, bad length, etc.)  [ipv6IfIcmpInErrors]

              idtunr6/s
                     The number of ICMP Destination Unreachable messages received by the  interface  per  second  [ipv6IfIcmpIn

                     DestUnreachs].

              odtunr6/s
                     The  number of ICMP Destination Unreachable messages sent by the interface per second [ipv6IfIcmpOutDestUn

                     reachs].

              itmex6/s
                     The number of ICMP Time Exceeded messages received by the interface per second [ipv6IfIcmpInTimeExcds].

              otmex6/s
                     The number of ICMP Time Exceeded messages sent by the interface per second [ipv6IfIcmpOutTimeExcds].

              iprmpb6/s
                     The number of ICMP Parameter Problem messages received by the interface per  second  [ipv6IfIcmpInParmProb

                     lems].

              oprmpb6/s
                     The number of ICMP Parameter Problem messages sent by the interface per second [ipv6IfIcmpOutParmProblems].

              iredir6/s
                     The number of Redirect messages received by the interface per second [ipv6IfIcmpInRedirects].

              oredir6/s
                     The number of Redirect messages sent by the interface by second [ipv6IfIcmpOutRedirects].

              ipck2b6/s
                     The number of ICMP Packet Too Big messages received by the interface per second [ipv6IfIcmpInPktTooBigs].

              opck2b6/s
                     The number of ICMP Packet Too Big messages sent by the interface per second [ipv6IfIcmpOutPktTooBigs].

              With  the  IP  keyword,  statistics  about IPv4 network traffic are reported.  Note that IPv4 statistics depend on
              sadc's option "-S SNMP" to be collected.  The following values are displayed (formal  SNMP  names  between  square
              brackets):

              irec/s
                     The  total number of input datagrams received from interfaces per second, including those received in error
                     [ipInReceives].

              fwddgm/s
                     The number of input datagrams per second, for which this entity was not their final IP  destination,  as  a
                     result  of which an attempt was made to find a route to forward them to that final destination [ipForwData

                     grams].

              idel/s
                     The total number of input datagrams successfully delivered per second to IP user-protocols (including ICMP)
                     [ipInDelivers].

              orq/s
                     The  total  number of IP datagrams which local IP user-protocols (including ICMP) supplied per second to IP
                     in requests for transmission [ipOutRequests].  Note that  this  counter  does  not  include  any  datagrams
                     counted in fwddgm/s.

              asmrq/s
                     The  number  of  IP fragments received per second which needed to be reassembled at this entity [ipReasmRe

                     qds].

              asmok/s
                     The number of IP datagrams successfully re-assembled per second [ipReasmOKs].

              fragok/s
                     The number of IP datagrams that have been successfully fragmented at this entity per second [ipFragOKs].

              fragcrt/s
                     The number of IP datagram fragments that have been generated per second as a  result  of  fragmentation  at
                     this entity [ipFragCreates].

              With  the  EIP  keyword,  statistics  about IPv4 network errors are reported.  Note that IPv4 statistics depend on
              sadc's option "-S SNMP" to be collected.  The following values are displayed (formal  SNMP  names  between  square
              brackets):

              ihdrerr/s
                     The  number of input datagrams discarded per second due to errors in their IP headers, including bad check

                     sums, version number mismatch, other format errors, time-to-live exceeded, errors discovered in  processing
                     their IP options, etc. [ipInHdrErrors]

              iadrerr/s
                     The  number of input datagrams discarded per second because the IP address in their IP header's destination
                     field was not a valid address to be received at this entity. This count includes invalid  addresses  (e.g.,
                     0.0.0.0)  and  addresses  of unsupported Classes (e.g., Class E). For entities which are not IP routers and
                     therefore do not forward datagrams, this counter includes datagrams discarded because the  destination  ad

                     dress was not a local address [ipInAddrErrors].

              iukwnpr/s
                     The  number of locally-addressed datagrams received successfully but discarded per second because of an un

                     known or unsupported protocol [ipInUnknownProtos].

              idisc/s
                     The number of input IP datagrams per second for which no problems were encountered to prevent their contin

                     ued  processing,  but which were discarded (e.g., for lack of buffer space) [ipInDiscards].  Note that this
                     counter does not include any datagrams discarded while awaiting re-assembly.

              odisc/s
                     The number of output IP datagrams per second for which no problem was encountered to prevent  their  trans

                     mission  to  their  destination, but which were discarded (e.g., for lack of buffer space) [ipOutDiscards].
                     Note that this counter would include datagrams counted in fwddgm/s if any such packets  met  this  (discre

                     tionary) discard criterion.

              onort/s
                     The  number  of IP datagrams discarded per second because no route could be found to transmit them to their
                     destination [ipOutNoRoutes].  Note that this counter includes any packets counted in  fwddgm/s  which  meet
                     this  'no-route' criterion.  Note that this includes any datagrams which a host cannot route because all of
                     its default routers are down.

              asmf/s
                     The number of failures detected per second by the IP re-assembly algorithm (for whatever reason: timed out,
                     errors,  etc)  [ipReasmFails].   Note  that this is not necessarily a count of discarded IP fragments since
                     some algorithms can lose track of the number of fragments by combining them as they are received.

              fragf/s
                     The number of IP datagrams that have been discarded per second because they needed to be fragmented at this
                     entity but could not be, e.g., because their Don't Fragment flag was set [ipFragFails].

              With  the  IP6  keyword,  statistics about IPv6 network traffic are reported.  Note that IPv6 statistics depend on
              sadc's option "-S IPV6" to be collected.  The following values are displayed (formal  SNMP  names  between  square
              brackets):

              irec6/s
                     The  total number of input datagrams received from interfaces per second, including those received in error
                     [ipv6IfStatsInReceives].

              fwddgm6/s
                     The number of output datagrams per second which this entity received and forwarded to their final  destina

                     tions [ipv6IfStatsOutForwDatagrams].

              idel6/s
                     The  total  number  of  datagrams successfully delivered per second to IPv6 user-protocols (including ICMP)
                     [ipv6IfStatsInDelivers].

              orq6/s
                     The total number of IPv6 datagrams which local IPv6 user-protocols (including ICMP) supplied per second  to
                     IPv6  in  requests  for transmission [ipv6IfStatsOutRequests].  Note that this counter does not include any
                     datagrams counted in fwddgm6/s.

              asmrq6/s
                     The number of IPv6 fragments received per second which needed to be reassembled at this interface [ipv6IfS

                     tatsReasmReqds].

              asmok6/s
                     The number of IPv6 datagrams successfully reassembled per second [ipv6IfStatsReasmOKs].

              imcpck6/s
                     The number of multicast packets received per second by the interface [ipv6IfStatsInMcastPkts].

              omcpck6/s
                     The number of multicast packets transmitted per second by the interface [ipv6IfStatsOutMcastPkts].

              fragok6/s
                     The  number  of  IPv6  datagrams that have been successfully fragmented at this output interface per second
                     [ipv6IfStatsOutFragOKs].

              fragcr6/s
                     The number of output datagram fragments that have been generated per second as a result of fragmentation at
                     this output interface [ipv6IfStatsOutFragCreates].

              With  the  EIP6  keyword,  statistics about IPv6 network errors are reported.  Note that IPv6 statistics depend on
              sadc's option "-S IPV6" to be collected.  The following values are displayed (formal  SNMP  names  between  square
              brackets):

              ihdrer6/s
                     The  number  of input datagrams discarded per second due to errors in their IPv6 headers, including version
                     number mismatch, other format errors, hop count exceeded, errors discovered in processing  their  IPv6  op

                     tions, etc. [ipv6IfStatsInHdrErrors]

              iadrer6/s
                     The number of input datagrams discarded per second because the IPv6 address in their IPv6 header's destina

                     tion field was not a valid address to be received at this entity. This  count  includes  invalid  addresses
                     (e.g.,  ::0)  and unsupported addresses (e.g., addresses with unallocated prefixes). For entities which are
                     not IPv6 routers and therefore do not forward datagrams, this counter includes datagrams discarded  because
                     the destination address was not a local address [ipv6IfStatsInAddrErrors].

              iukwnp6/s
                     The  number of locally-addressed datagrams received successfully but discarded per second because of an un

                     known or unsupported protocol [ipv6IfStatsInUnknownProtos].

              i2big6/s
                     The number of input datagrams that could not be forwarded per second because their size exceeded  the  link
                     MTU of outgoing interface [ipv6IfStatsInTooBigErrors].

              idisc6/s
                     The  number of input IPv6 datagrams per second for which no problems were encountered to prevent their con

                     tinued processing, but which were discarded (e.g., for lack of buffer space) [ipv6IfStatsInDiscards].  Note
                     that this counter does not include any datagrams discarded while awaiting re-assembly.

              odisc6/s
                     The number of output IPv6 datagrams per second for which no problem was encountered to prevent their trans

                     mission to their destination, but which were discarded (e.g., for lack of buffer space) [ipv6IfStatsOutDis

                     cards].  Note  that  this counter would include datagrams counted in fwddgm6/s if any such packets met this
                     (discretionary) discard criterion.

              inort6/s
                     The number of input datagrams discarded per second because no route could be  found  to  transmit  them  to
                     their destination [ipv6IfStatsInNoRoutes].

              onort6/s
                     The number of locally generated IP datagrams discarded per second because no route could be found to trans

                     mit them to their destination [unknown formal SNMP name].

              asmf6/s
                     The number of failures detected per second by the IPv6 re-assembly algorithm (for  whatever  reason:  timed
                     out,  errors,  etc.)  [ipv6IfStatsReasmFails].  Note that this is not necessarily a count of discarded IPv6
                     fragments since some algorithms can lose track of the number of fragments by combining them as they are re

                     ceived.

              fragf6/s
                     The  number  of  IPv6 datagrams that have been discarded per second because they needed to be fragmented at
                     this output interface but could not be [ipv6IfStatsOutFragFails].

              itrpck6/s
                     The number of input datagrams discarded per second because datagram frame didn't carry enough data [ipv6If

                     StatsInTruncatedPkts].

              With the NFS keyword, statistics about NFS client activity are reported.  The following values are displayed:

              call/s
                     Number of RPC requests made per second.

              retrans/s
                     Number  of RPC requests per second, those which needed to be retransmitted (for example because of a server
                     timeout).

              read/s
                     Number of 'read' RPC calls made per second.

              write/s
                     Number of 'write' RPC calls made per second.

              access/s
                     Number of 'access' RPC calls made per second.

              getatt/s
                     Number of 'getattr' RPC calls made per second.

              With the NFSD keyword, statistics about NFS server activity are reported.  The following values are displayed:

              scall/s
                     Number of RPC requests received per second.

              badcall/s
                     Number of bad RPC requests received per second, those whose processing generated an error.

              packet/s
                     Number of network packets received per second.

              udp/s
                     Number of UDP packets received per second.

              tcp/s
                     Number of TCP packets received per second.

              hit/s
                     Number of reply cache hits per second.

              miss/s
                     Number of reply cache misses per second.

              sread/s
                     Number of 'read' RPC calls received per second.

              swrite/s
                     Number of 'write' RPC calls received per second.

              saccess/s
                     Number of 'access' RPC calls received per second.

              sgetatt/s
                     Number of 'getattr' RPC calls received per second.

              With the SOCK keyword, statistics on sockets in use are reported (IPv4).  The following values are displayed:

              totsck
                     Total number of sockets used by the system.

              tcpsck
                     Number of TCP sockets currently in use.

              udpsck
                     Number of UDP sockets currently in use.

              rawsck
                     Number of RAW sockets currently in use.

              ip-frag
                     Number of IP fragments currently in queue.

              tcp-tw
                     Number of TCP sockets in TIME_WAIT state.

              With the SOCK6 keyword, statistics on sockets in use are reported (IPv6).  Note that  IPv6  statistics  depend  on
              sadc's option "-S IPV6" to be collected.  The following values are displayed:

              tcp6sck
                     Number of TCPv6 sockets currently in use.

              udp6sck
                     Number of UDPv6 sockets currently in use.

              raw6sck
                     Number of RAWv6 sockets currently in use.

              ip6-frag
                     Number of IPv6 fragments currently in use.

              With  the SOFT keyword, statistics about software-based network processing are reported.  The following values are
              displayed:

              total/s
                     The total number of network frames processed per second.

              dropd/s
                     The total number of network frames dropped per second because there was no room on the processing queue.

              squeezd/s
                     The number of times the softirq handler function terminated per second because its budget was  consumed  or
                     the time limit was reached, but more work could have been done.

              rx_rps/s
                     The  number  of times the CPU has been woken up per second to process packets via an inter-processor inter

                     rupt.

              flw_lim/s
                     The number of times the flow limit has been reached per second.  Flow limiting is an optional  RPS  feature
                     that  can  be  used to limit the number of packets queued to the backlog for each flow to a certain amount.
                     This can help ensure that smaller flows are processed even though much larger flows are pushing packets in.

              With the TCP keyword, statistics about TCPv4 network traffic are reported.  Note that TCPv4 statistics  depend  on
              sadc's  option  "-S  SNMP"  to be collected.  The following values are displayed (formal SNMP names between square
              brackets):

              active/s
                     The number of times TCP connections have made a direct transition to the SYN-SENT  state  from  the  CLOSED
                     state per second [tcpActiveOpens].

              passive/s
                     The  number  of  times  TCP connections have made a direct transition to the SYN-RCVD state from the LISTEN
                     state per second [tcpPassiveOpens].

              iseg/s
                     The total number of segments received per second, including those  received  in  error  [tcpInSegs].   This
                     count includes segments received on currently established connections.

              oseg/s
                     The  total  number  of segments sent per second, including those on current connections but excluding those
                     containing only retransmitted octets [tcpOutSegs].

              With the ETCP keyword, statistics about TCPv4 network errors are reported.  Note that TCPv4 statistics  depend  on
              sadc's  option  "-S  SNMP"  to be collected.  The following values are displayed (formal SNMP names between square
              brackets):

              atmptf/s
                     The number of times per second TCP connections have made a direct transition to the CLOSED state  from  ei

                     ther  the  SYN-SENT  state  or the SYN-RCVD state, plus the number of times per second TCP connections have
                     made a direct transition to the LISTEN state from the SYN-RCVD state [tcpAttemptFails].

              estres/s
                     The number of times per second TCP connections have made a direct transition to the CLOSED state  from  ei

                     ther the ESTABLISHED state or the CLOSE-WAIT state [tcpEstabResets].

              retrans/s
                     The  total  number  of  segments retransmitted per second - that is, the number of TCP segments transmitted
                     containing one or more previously transmitted octets [tcpRetransSegs].

              isegerr/s
                     The total number of segments received in error (e.g., bad TCP checksums) per second [tcpInErrs].

              orsts/s
                     The number of TCP segments sent per second containing the RST flag [tcpOutRsts].

              With the UDP keyword, statistics about UDPv4 network traffic are reported.  Note that UDPv4 statistics  depend  on
              sadc's  option  "-S  SNMP"  to be collected.  The following values are displayed (formal SNMP names between square
              brackets):

              idgm/s
                     The total number of UDP datagrams delivered per second to UDP users [udpInDatagrams].

              odgm/s
                     The total number of UDP datagrams sent per second from this entity [udpOutDatagrams].

              noport/s
                     The total number of received UDP datagrams per second for which there was no application at the destination
                     port [udpNoPorts].

              idgmerr/s
                     The number of received UDP datagrams per second that could not be delivered for reasons other than the lack
                     of an application at the destination port [udpInErrors].

              With the UDP6 keyword, statistics about UDPv6 network traffic are reported.  Note that UDPv6 statistics depend  on
              sadc's  option  "-S  IPV6"  to be collected.  The following values are displayed (formal SNMP names between square
              brackets):

              idgm6/s
                     The total number of UDP datagrams delivered per second to UDP users [udpInDatagrams].

              odgm6/s
                     The total number of UDP datagrams sent per second from this entity [udpOutDatagrams].

              noport6/s
                     The total number of received UDP datagrams per second for which there was no application at the destination
                     port [udpNoPorts].

              idgmer6/s
                     The number of received UDP datagrams per second that could not be delivered for reasons other than the lack
                     of an application at the destination port [udpInErrors].

              The ALL keyword is equivalent to specifying all the keywords above and therefore all the  network  activities  are
              reported.

       -o [ filename ]
              Save the readings in the file in binary form. Each reading is in a separate record. The default value of the file

              name parameter is the current standard system activity daily data file.  If filename is a directory instead  of  a
              plain file then it is considered as the directory where the standard system activity daily data files are located.
              The -o option is exclusive of the -f option.  All the data available from the kernel are saved  in  the  file  (in
              fact, sar calls its data collector sadc with the option "-S ALL".  See sadc(8) manual page).

       -P { cpu_list | ALL }
              Report  per-processor statistics for the specified processor or processors.  cpu_list is a list of comma-separated
              values or range of values (e.g., 0,2,4-7,12-).  Note that processor 0 is the first processor, and processor all is
              the  global  average among all processors.  Specifying the ALL keyword reports statistics for each individual pro

              cessor, and globally for all processors. Offline processors are not displayed.

       -p     Pretty-print device names. Use this option in conjunction with option -d.  By default names are printed as  devM-n
              where  M  and  n are the major and minor numbers for the device.  Use of this option displays the names of the de

              vices as they (should) appear in /dev. Name mappings are controlled by /etc/sysstat/sysstat.ioconf.

       -q     Report queue length and load averages. The following values are displayed:

              runq-sz
                     Run queue length (number of tasks waiting for run time).

              plist-sz
                     Number of tasks in the task list.

              ldavg-1
                     System load average for the last minute.  The load average is calculated as the average number of  runnable
                     or  running  tasks (R state), and the number of tasks in uninterruptible sleep (D state) over the specified
                     interval.

              ldavg-5
                     System load average for the past 5 minutes.

              ldavg-15
                     System load average for the past 15 minutes.

              blocked
                     Number of tasks currently blocked, waiting for I/O to complete.

       -r [ ALL ]
              Report memory utilization statistics. The ALL keyword indicates that all the memory fields  should  be  displayed.
              The following values may be displayed:

              kbmemfree
                     Amount of free memory available in kilobytes.

              kbavail
                     Estimate of how much memory in kilobytes is available for starting new applications, without swapping.  The
                     estimate takes into account that the system needs some page cache to function well, and that  not  all  re

                     claimable  slab  will be reclaimable, due to items being in use. The impact of those factors will vary from
                     system to system.

              kbmemused
                     Amount of used memory in kilobytes (calculated as total installed memory - kbmemfree - kbbuffers - kbcached
                     - kbslab).

              %memused
                     Percentage of used memory.

              kbbuffers
                     Amount of memory used as buffers by the kernel in kilobytes.

              kbcached
                     Amount of memory used to cache data by the kernel in kilobytes.

              kbcommit
                     Amount  of  memory  in  kilobytes  needed for current workload. This is an estimate of how much RAM/swap is
                     needed to guarantee that there never is out of memory.

              %commit
                     Percentage of memory needed for current workload in relation to the  total  amount  of  memory  (RAM+swap).
                     This number may be greater than 100% because the kernel usually overcommits memory.

              kbactive
                     Amount of active memory in kilobytes (memory that has been used more recently and usually not reclaimed un

                     less absolutely necessary).

              kbinact
                     Amount of inactive memory in kilobytes (memory which has been less recently used. It is more eligible to be
                     reclaimed for other purposes).

              kbdirty
                     Amount of memory in kilobytes waiting to get written back to the disk.

              kbanonpg
                     Amount of non-file backed pages in kilobytes mapped into userspace page tables.

              kbslab
                     Amount of memory in kilobytes used by the kernel to cache data structures for its own use.

              kbkstack
                     Amount of memory in kilobytes used for kernel stack space.

              kbpgtbl
                     Amount of memory in kilobytes dedicated to the lowest level of page tables.

              kbvmused
                     Amount of memory in kilobytes of used virtual address space.

       -S     Report swap space utilization statistics.  The following values are displayed:

              kbswpfree
                     Amount of free swap space in kilobytes.

              kbswpused
                     Amount of used swap space in kilobytes.

              %swpused
                     Percentage of used swap space.

              kbswpcad
                     Amount  of  cached  swap memory in kilobytes.  This is memory that once was swapped out, is swapped back in
                     but still also is in the swap area (if memory is needed it doesn't need to be swapped out again because  it
                     is already in the swap area. This saves I/O).

              %swpcad
                     Percentage of cached swap memory in relation to the amount of used swap space.

       -s [ hh:mm[:ss] ]
              Set  the  starting  time of the data, causing the sar command to extract records time-tagged at, or following, the
              time specified. The default starting time is 08:00:00.  Hours must be given in 24-hour format. This option can  be
              used only when data are read from a file (option -f).

       --sadc Indicate  which  data collector is called by sar.  If the data collector is sought in PATH then enter "which sadc"
              to know where it is located.

       -t     When reading data from a daily data file, indicate that sar should display the timestamps in  the  original  local
              time  of  the data file creator. Without this option, the sar command displays the timestamps in the user's locale
              time.

       -u [ ALL ]
              Report CPU utilization. The ALL keyword indicates that all the CPU fields should be  displayed.   The  report  may
              show the following fields:

              %user
                     Percentage of CPU utilization that occurred while executing at the user level (application). Note that this
                     field includes time spent running virtual processors.

              %usr
                     Percentage of CPU utilization that occurred while executing at the user level (application). Note that this
                     field does NOT include time spent running virtual processors.

              %nice
                     Percentage of CPU utilization that occurred while executing at the user level with nice priority.

              %system
                     Percentage  of  CPU  utilization that occurred while executing at the system level (kernel). Note that this
                     field includes time spent servicing hardware and software interrupts.

              %sys
                     Percentage of CPU utilization that occurred while executing at the system level (kernel).  Note  that  this
                     field does NOT include time spent servicing hardware or software interrupts.

              %iowait
                     Percentage  of  time that the CPU or CPUs were idle during which the system had an outstanding disk I/O re

                     quest.

              %steal
                     Percentage of time spent in involuntary wait by the virtual CPU or CPUs while the hypervisor was  servicing
                     another virtual processor.

              %irq
                     Percentage of time spent by the CPU or CPUs to service hardware interrupts.

              %soft
                     Percentage of time spent by the CPU or CPUs to service software interrupts.

              %guest
                     Percentage of time spent by the CPU or CPUs to run a virtual processor.

              %gnice
                     Percentage of time spent by the CPU or CPUs to run a niced guest.

              %idle
                     Percentage  of  time that the CPU or CPUs were idle and the system did not have an outstanding disk I/O re

                     quest.

       -V     Print version number then exit.

       -v     Report status of inode, file and other kernel tables.  The following values are displayed:

              dentunusd
                     Number of unused cache entries in the directory cache.

              file-nr
                     Number of file handles used by the system.

              inode-nr
                     Number of inode handlers used by the system.

              pty-nr
                     Number of pseudo-terminals used by the system.

       -W     Report swapping statistics. The following values are displayed:

              pswpin/s
                     Total number of swap pages the system brought in per second.

              pswpout/s
                     Total number of swap pages the system brought out per second.

       -w     Report task creation and system switching activity.

              proc/s
                     Total number of tasks created per second.

              cswch/s
                     Total number of context switches per second.

       -y     Report TTY devices activity. The following values are displayed:

              rcvin/s
                     Number of receive interrupts per second for current serial line. Serial line number is  given  in  the  TTY
                     column.

              xmtin/s
                     Number of transmit interrupts per second for current serial line.

              framerr/s
                     Number of frame errors per second for current serial line.

              prtyerr/s
                     Number of parity errors per second for current serial line.

              brk/s
                     Number of breaks per second for current serial line.

              ovrun/s
                     Number of overrun errors per second for current serial line.

       -z     Tell sar to omit output for any devices for which there was no activity during the sample period.

ENVIRONMENT
       The sar command takes into account the following environment variables:

       S_COLORS
              When  this  variable  is  set, display statistics in color on the terminal.  Possible values for this variable are
              never, always or auto (the latter is the default).

              Note: On Debian sysstems the colors are displayed by default when output is connected to  the  terminal,  even  if
              this variable is not set (i.e. unset variable is treated as if it were set to auto).

              Please  note  that the color (being red, yellow, or some other color) used to display a value is not indicative of
              any kind of issue simply because of the color. It only indicates different ranges of values.

       S_COLORS_SGR
              Specify the colors and other attributes used to display statistics on the terminal.  Its value  is  a  colon-sepa

              rated list of capabilities that defaults to C=33;22:H=31;1:I=32;22:M=35;1:N=34;1:R=31;22:Z=34;22.  Supported capa

              bilities are:

              C=     SGR (Select Graphic Rendition) substring for comments inserted in the binary daily data files.

              H=     SGR substring for percentage values greater than or equal to 75%.

              I=     SGR substring for item names or values (eg. network interfaces, CPU number...)

              M=     SGR substring for percentage values in the range from 50% to 75%.

              N=     SGR substring for non-zero statistics values.

              R=     SGR substring for restart messages.

              Z=     SGR substring for zero values.

       S_TIME_DEF_TIME
              If this variable exists and its value is UTC then sar will save its data in UTC time (data will still be displayed
              in local time).  sar will also use UTC time instead of local time to determine the current daily data file located
              in the /var/log/sysstat directory. This variable may be useful for servers with users located across several time

              zones.

       S_TIME_FORMAT
              If this variable exists and its value is ISO then the current locale will be ignored when printing the date in the
              report header.  The sar command will use the ISO 8601 format (YYYY-MM-DD) instead.  The  timestamp  will  also  be
              compliant with ISO 8601 format.

EXAMPLES
       sar -u 2 5
              Report CPU utilization for each 2 seconds. 5 lines are displayed.

       sar -I 14 -o int14.file 2 10
              Report  statistics  on  IRQ  14  for  each  2  seconds.  10 lines are displayed.  Data are stored in a file called
              int14.file.

       sar -r -n DEV -f /var/log/sysstat/sa16
              Display memory and network statistics saved in daily data file 'sa16'.

       sar -A
              Display all the statistics saved in current daily data file.

BUGS
       /proc filesystem must be mounted for the sar command to work.

       All the statistics are not necessarily available, depending on the kernel version used.  sar assumes that you  are  using
       at least a 2.6 kernel.

FILES
       /var/log/sysstat/saDD
       /var/log/sysstat/saYYYYMMDD
              The  standard  system  activity daily data files and their default location.  YYYY stands for the current year, MM
              for the current month and DD for the current day.

       /proc and /sys contain various files with system statistics.

AUTHOR
       Sebastien Godard (sysstat  orange.fr)

SEE ALSO
       sadc(8), sa1(8), sa2(8), sadf(1), sysstat(5), pidstat(1), mpstat(1), iostat(1), vmstat(8)

       https://github.com/sysstat/sysstat

       http://pagesperso-orange.fr/sebastien.godard/

Linux                                                     OCTOBER 2018                                                    SAR(1)

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