Hi Kishore. It depends on what you mean by "overall system utilization". Most people mean CPU utilization, as opposed to utilization of the network or disk subsystems.
CPU utilization is a combination of usr + sys, so the sum of those two (or 100 - idle). Many like to use load average as a "how busy" metric, which combines CPU usr + sys and run queue wait times. Note, to my mind, load average must be correlated with a workload/application performance metric to be of real use. Actually, any system performance work requires a measure of application performance, in conjunction with the system metrics. I use a combination of CPU utilization (vmstat, mpstat), load average, run queue depth (vmstat) and CPU wait times (LAT thread microstate as reported by prstat -Lm). HTH /jim On May 31, 2011, at 12:43 PM, Kishore Kumar Pusukuri wrote: > Hi, > Could you please provide me some metrics used for measuring overall system > utilization (e.g. a NUMA machine running Solaris 10)? > > Is it okay to use overall CPU utilization metric such as "usr" under > mpstat(1) output? > > Please let me know. > > Thanks. > -- > This message posted from opensolaris.org > _______________________________________________ > perf-discuss mailing list > perf-discuss@opensolaris.org _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
