Date: Tue, 13 Jun 2006 11:23:28 -0700 (PDT) From: Danial Thom <danial_thom@yahoo.com> To: Robert Watson <rwatson@FreeBSD.org> Cc: freebsd-performance@freebsd.org, David Xu <davidxu@freebsd.org> Subject: Re: Initial 6.1 questions Message-ID: <20060613182328.76244.qmail@web33304.mail.mud.yahoo.com> In-Reply-To: <20060613175531.S26068@fledge.watson.org>
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--- Robert Watson <rwatson@FreeBSD.org> wrote: > On Tue, 13 Jun 2006, Danial Thom wrote: > > >> I didn't answer it because I don't know what > output cpustat provides. What > >> output does cpustat provide on DragonflyBSD? > > > > Its a simple output such as: > > > > CPU-0 state: 14.00% user, 0.00% nice, > 2.00% > > sys, 6.00% intr, 78.00% idle > > CPU-1 state: 4.00% user, 0.00% nice, > 17.00% > > sys, 2.00% intr, 77.00% idle > > > > Of course, hp-ux type output for top would be > > ideal: > > > > Load averages: 0.27, 0.28, 0.28 > > 203 processes: 186 sleeping, 17 running > > Cpu states: > > CPU LOAD USER NICE SYS IDLE BLOCK > > SWAIT INTR SSYS > > 0 0.05 0.0% 0.0% 0.0% 100.0% 0.0% > > 0.0% 0.0% 0.0% > > 1 0.92 0.0% 0.0% 0.0% 100.0% 0.0% > > 0.0% 0.0% 0.0% > > 2 0.03 0.0% 0.0% 0.0% 100.0% 0.0% > > 0.0% 0.0% 0.0% > > 3 0.08 0.0% 0.0% 0.0% 100.0% 0.0% > > 0.0% 0.0% 0.0% > > --- ---- ----- ----- ----- ----- ----- > > ----- ----- ----- > > avg 0.27 0.0% 0.0% 0.0% 100.0% 0.0% > > 0.0% 0.0% 0.0% > > > > What is the plan for FreeBSD, as I don't see > that top shows any distribution > > among cpus? > > top displays some CPU information, especially > with -S which shows you the > level of activity for the idle thread on each > CPU. The above looks useful, > and should be fairly easy to add. I've been > thinking about adding a few new > pages to systat output: > > - Kernel memory allocator stats, based on > memstat/memtop (and similar to what > vmstat -z and vmstat -m show). > - CPU statistics such as the above. > > I think there are some patches floating around > already that gather per-cpu > cp_time measurements, but Kris has commented to > me that they reduce > performance somewhat, so I'll have to > investigate some. That may be a caching > effect of some sort. Maybe someone can explain this output. The top line shows 99.6%idle. Is it just showing CPU 0s stats on the top line? last pid: 705; load averages: 0.06, 0.02, 0.00 up 0+00:29:36 14:22:42 69 processes: 3 running, 48 sleeping, 18 waiting CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle Mem: 8160K Active, 8108K Inact, 17M Wired, 9712K Buf, 461M Free Swap: 512M Total, 512M Free PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 11 root 1 171 52 0K 8K RUN 1 28:58 98.97% idle: cpu1 12 root 1 171 52 0K 8K CPU0 0 27:34 77.64% idle: cpu0 23 root 1 -68 -187 0K 8K WAIT 0 1:07 17.14% irq21: em1 __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
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