Hi Cherian,
The -m shows microstate percentages for each process; i.e. the percentage of time this thread spent on cpu as a percentage of the elapsed time of the sample. It doesn't correspond to the regular prstat percentage of the whole machine value - so it's actually a different metric. We have made some notes on the different modes of prstat here: http://www.solarisinternals.com/wiki/index.php/Processes Regards, Richard. On Thu, Oct 19, 2006 at 08:34:17AM -0700, Cherian Abraham wrote: > Hi All, > > Thanks for all the feedback. > I tried to run both prstat and prstat -m option and here are the output > displays... > (showing only three processes). > > prstat -mL > PID USERNAME USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL SIG PROCESS/LWPID > 25952 root 30 30 0.0 0.0 0.0 0.0 30 0.0 100 6K 87K 0 processC/1 > 25571 root 5.1 0.7 0.0 0.0 0.0 0.0 93 0.0 57 68 5K 0 processB/1 > 2003 root 0.3 1.2 0.1 0.0 0.0 0.0 97 1.9 67 8 1K 21 processA/1 > > prstat > PID USERNAME SIZE RSS STATE PRI NICE TIME CPU PROCESS/NLWP > 2003 root 39M 38M sleep 59 0 3:05:58 0.6% processA/1 > 25571 root 6488K 5752K sleep 13 0 0:00:00 0.5% processB/1 > 25952 root 5208K 4184K sleep 23 0 0:00:00 0.1% processC/1 > > Is it possible to relate the CPU usage shown by prstat and prstat -m ? or am > i comparing apples and oranges here ? process C shows 0.1% CPU usage (is this > only usr time?) and microstate accounting shows 30% user time, 30% sys time > and 30% sleep. How does one relate the two ? The above is just snapshots > taken almost at the same time. > > My testing is normally done in a 2 hr time frame. So i could run prstat with > 10 sec sampling rate and prstat -m with also a 10 sec sampling rate during > the same period. The sampling instance for both maybe slightly off. If i > average out during this run for each process from prstat and also the same > from prstat -m, how do i relate these values ? > > > This message posted from opensolaris.org > _______________________________________________ > perf-discuss mailing list > perf-discuss@opensolaris.org -- :-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-: Richard Mc Dougall : [EMAIL PROTECTED] Distinguished Engineer : http://blogs.sun.com/rmc Performance and Availability : x31542 Engineering : http://devnull.eng Sun Microsystems Inc : +1 650 352 6438 :-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-:-: _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
