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      VscsiStats -- This tool controls vscsi data collection for virtual machine disk
                    disk I/O workload characterization. Users can start and stop online data
                    data collection for particular VMs as well as print out online histogram data.
                    Command traces can also be collected and printed.
      
      The following histogram related options are available:
         -h, --help will print the usage
         -l, --list will list the available virtual machines and their virtual disks
         -r, --reset will reset the stats
         -s, --start will start vscsiStats collection; exclusive of -x
         -x, --stop will stop vscsiStats collection; exclusive of -s
         -w , --worldgroupid specifies a worldID to use for this operation
         -i , --handleid specifies a vscsi handleID to use for this operation
               requires the -w option
         -p , --printhistos will print out the current histograms for the specified
                histogram type. May be used in conjunction with -w and -i.
                histoType must be one and only one of:
                     all, ioLength, seekDistance, outstandingIOs, latency, interarrival
         -c, --csv will use comma as delimiter in conjunction with -p
      The following command trace related options are available:
         -t, --tracecmds will start scsi cmd traces; in conjunction with -s
             Note:- the -t option consumes significant system resources so
                    enabling it indefinitely is not advisable
                  - try to limit the #virtual disk for which cmd tracing is enabled at any
                    given time by using --worldgroupid and/or --handleid options.
                  - trace contains NO customer sensitive data
                    - only information recorded is:
                      - serialnumber, IO block size, number of scatter-gather elements
                      - command type, block number, timestamp
                    - Therefore, actual data/payload of commands is not stored
                  - If successfully started, log channel id(s) will be printed out.
                    To store the command trace in a file for later processing, invoke:
                    $ logchannellogger  
         -e , --traceprettyprint reads in a vscsi cmd trace from the given
            filename and sends a CSV formatted output to stdout; exclusive of all other options
      vscsiStats Usage:
             vscsiStats [options]
    
    



Designed by SanjuD(@ngineerbabu)