sysstat [ -c count ] [ -s ] [ -u | -x | -m | -f | -i | -b ] [ interval ]
CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age ###% ##### ##### ##### ##### ##### ##### ##### ##### ##### >##
CPU NFS CIFS FCP Net kB/s Disk kB/s FCP kB/s Cache in out read write in out age ###% ##### ##### ##### ##### ##### ##### ##### ##### ##### >##
CPU NFS CIFS iSCSI Net kB/s Disk kB/s iSCSI kB/s Cache in out read write in out age ###% ##### ##### ##### ##### ##### ##### ##### ##### ##### >##
CPU FCP iSCSI Partner Total FCP kB/s iSCSI kB/s Partner kB/s Disk kB/s CP CP Disk in out in out in out read write time ty util ###% ##### ##### ##### ###### ##### ##### ##### ##### ##### ##### ##### ##### ###% A ###%
CPU Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk ops/s in out read write read write age hit time ty util ###% ####### ##### ##### ##### ##### ##### ##### >## ###% ###% A ###%
CPU NFS CIFS HTTP Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk FCP iSCSI FCP kB/s in out read write read write age hit time ty util in out ###% ##### ##### ##### ####### ##### ##### ##### ##### ##### ##### >## ###% ###% A ###% ##### ##### ##### #####
-- Summary Statistics (#### samples ## secs/sample) CPU Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk ops/s in out read write read write age hit util ty util Min ###% ####### ##### ##### ##### ##### ##### ##### ##### ###% ###% * ###% Avg ###% ####### ##### ##### ##### ##### ##### ##### ##### ###% ###% * ###% Max ###% ####### ##### ##### ##### ##### ##### ##### ##### ###% ###% * ###%
The output column descriptions are:
Disk kB/s The kilobytes per second of disk traffic being read and written;
Tape kB/s The number of kilobytes per second of tape traffic being read and written;
FCP kB/s The number of kilobytes per second of fcp traffic into and out of the server;
iSCSI kB/s
The number of kilobytes per second of
iSCSI traffic into and out of the server;
Partner kB/s
The number of kilobytes per second of
SCSI Partner traffic into and out of the
server;
Cache age The age of the data most recently evicted from the buffer pool. This data is usually, but not necessarily, the least recently used. Thus, it is possible for the statistic reported by sysstat to sometimes change erratically as buffers containing data of varying age are reclaimed.
Total ops/s
The total number of operations per second
(NFS + CIFS + HTTP)
Cache hit The WAFL cache hit rate percentage. This value is the percent of instances in which WAFL attempted to load a disk-block that the data was found already cached in memory. A dash in this column indicates that WAFL did not attempt to load any blocks during the measurement interval.
CP util The Consistency Point (CP) utilization, the % of time spent in a CP
sysstat 1
Display the default output every second, requires
control-C to terminate.
sysstat -s 1
Display the default output every second, upon control-C
termination print out the summary statistics.
sysstat -c 10
Display the default output every 15 seconds, stopping
after the 10th iteration.
sysstat -c 10 -s -u 2
sysstat -u -c 10 -s 2
Display the utilization output format, every 2 seconds,
stopping after the 10th iteration, upon completion
print out the summary statistics.
sysstat -x -s 5
Display the extended (full) output, every 5 seconds,
upon control-C termination print out the summary
statistics.
The statistics diplayed by the sysstat command are cumulative; a giveback operation does not zero out the statistics. That is, after giving back its partner's resources, the live filer does not subtract the statistics about operations it performed on behalf of the failed filer in takeover mode.