NAME¶

ziomon - Collect data for performance analysis of fcp adapters.

SYNOPSIS¶

ziomon [-h] [-V] [-v] [-f] [-l <sz_limit>] [-i n] -d n -o <logfile> <device>...

DESCRIPTION¶

ziomon starts and controls various utilities to collect data for performance analysis for a specified duration. It is possible to specify multipath devices and persistent device symlinks from /dev/disk/... subdirectories (such as by-id, by-path, by-uuid, by-label, etc.). If multipath devices or device symlinks are specified, the respective underlying regular block devices will be monitored.

OPTIONS¶

-h or --help

Print help information, then exit.

-v or --version

Print version information, then exit.

-V or --verbose

Be verbose.

-f or --force

Force start of data collection even though there is insufficient free disk space.

-l or --size-limit

Upper limit of the output files. May include one of the suffixes M (megabytes), G (gigabytes) or T (terabytes) to specify a unit measure. Unit measure defaults to megabytes. Note that this is only a tentative value which might be slightly exceeded.

-i or --interval-length

Specify the time to elapse between recording data in seconds. Must be an even number. Defaults to 60 seconds.

-d or --duration

Overall monitoring duration in minutes. Must be a multiple of the interval length.

-o or --outfile

Basename for output files.

device

specifies a device to collect respective data for.

EXAMPLES¶

Collect data for devices /dev/sda, /dev/sdg, /dev/sdp, the multipath device /dev/mapper/36005076303ffc104000000000000212b and the device symlink /dev/disk/by-id/scsi-36005076307ffd72c00000000000054f5 for 5 minutes. Data should be sampled every 20 seconds. The collected data size should not exceed 50 MB. The output files should base their names on 'trace_data':

ziomon -i 20 -d 5 -l 50M -o trace_data /dev/sda /dev/sdg /dev/sdp /dev/mapper/36005076303ffc104000000000000212b /dev/disk/by-id/scsi-36005076307ffd72c00000000000054f5

SEE ALSO¶

ziomon_mgr(8), ziomon_util(8), ziomon_zfcpdd(8) ziomon_fcpconf(8)