Date: Fri, 15 Aug 2008 00:44:26 -0700 From: Jeremy Chadwick <koitsu@FreeBSD.org> To: Won De Erick <won.derick@yahoo.com> Cc: freebsd-hardware@freebsd.org Subject: Re: CPU Utilization on IBM x3755 Message-ID: <20080815074426.GA74077@eos.sc1.parodius.com> In-Reply-To: <58713.71225.qm@web45802.mail.sp1.yahoo.com> References: <58713.71225.qm@web45802.mail.sp1.yahoo.com>
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On Thu, Aug 14, 2008 at 11:53:30PM -0700, Won De Erick wrote: > Hello, > > I was wondering what are the processes running on my machine after checking the CPU utilization using ps and top commands. > My Platform is IBM x3755 (w/ 8 CPUs) running FreeBSD 6.2. > > > > 1. Using top -S > > last pid: 90083; load averages: 0.22, 0.19, 0.17 up > 5+00:26:5515:27:07 > 186 processes: 19 running, 152 sleeping, 15 waiting > CPU states: 0.9 % user, 0.0 % nice, 7.2 % system, 0.0 % interrupt, 91.9% idle > Mem: 54M > Active, 22M Inact, 76M Wired, 26M Buf, 29G Free > Swap: 6144M Total, 6144M > Free > > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU > COMMAND > 17 root 1 171 52 0K 16K RUN 0 101.2H 98.97% > idle: cpu0 > 13 root 1 171 52 0K 16K RUN 4 105.7H 96.83% > idle: cpu4 > 15 root 1 171 52 0K 16K RUN 2 114.1H 96.04% > idle: cpu2 > 12 root 1 171 52 0K 16K CPU5 5 109.8H 93.75% > idle: cpu5 > 16 root 1 171 52 0K 16K RUN 1 109.5H 86.18% > idle: cpu1 > 14 root 1 171 52 0K 16K RUN 3 113.7H 86.04% > idle: cpu3 > 10 root 1 171 52 0K 16K RUN 7 111.4H 83.98% > idle: cpu7 > 11 root 1 171 52 0K 16K RUN 6 110.8H 81.98% > idle: cpu6 > 57213 root 10 20 0 14512K 4548K RUN 7 388:19 0.00% > smd > 18 root 1 -32 -151 0K 16K CPU0 0 83:07 0.00% swi4: > clock sio > 45 root 1 171 52 0K 16K pgzero 3 3:05 0.00% > pagezero > > . . . > > > 57094 root 1 8 0 31356K 9180K wait 6 0:01 0.00% php-cgi > 18533 admin 1 96 0 30732K 4308K select 6 0:01 0.00% sshd90137 > 0.29, 0.20, 0.17 up 5+00:26:5715:27:09 > > > [a] Average CPU Utilization = 0.9 % user + 7.2 % > system = 8.1% > = 100 - 91.9 = > 8.1% > > 98.97 + > 96.83 + 96.04 + 93.75 + 86.18 + 86.04 + 83.98 + 81.98 > [b] Average CPU Utilization = 100 - > ----------------------------------------------------------------------- = 9.53 > % > > 8 > 2. Using ps -aux > > USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND > root 17 99.0 0.0 0 16 ?? RL Fri03PM 6074:32.36 [idle: > cpu0] > root 13 97.0 0.0 0 16 ?? RL Fri03PM 6339:48.43 > [idle: cpu4] > root 15 96.2 0.0 0 16 ?? RL Fri03PM > 6847:42.20 [idle: cpu2] > root 12 94.4 0.0 0 16 ?? RL > Fri03PM 6586:50.10 [idle: cpu5] > root 16 85.9 0.0 0 16 ?? > RL Fri03PM 6567:57.05 [idle: cpu1] > root 14 85.4 0.0 0 16 > ?? RL Fri03PM 6823:20.19 [idle: cpu3] > root 10 85.2 0.0 0 > 16 ?? RL Fri03PM 6683:28.54 [idle: cpu7] > root 11 81.9 0.0 > 0 16 ?? RL Fri03PM 6646:11.63 [idle: cpu6] > root 0 0.0 > 0.0 0 0 ?? WLs Fri03PM 0:00.00 [swapper] > root 1 0.0 > 0.0 912 460 ?? ILs Fri03PM 0:00.58 /sbin/init -- > > . . . > > admin 19027 0.0 0.0 12480 3384 p2 Ss+ 12:06PM 0:00.13 -clish > (clish) > root 19207 0.0 0.0 2604 940 p2 S+ 12:07PM 0:07.65 > /usr/sbin/clog -f /var/log/dhcpd.log > > > > 99 + 97 > + 96.2 + 94.4 + 85.9+ 85.4 + 85.2 + 81.9 > Average CPU Utilization = 100 - > --------------------------------------------------------- = 9.375 % > > 8 > <snip> > Question 2: What are the processes (system?) that are running that resulted to 1 [b]? > top -S is just giving a name idle: cpu0, idle: cpu1, etc. under the command column. They're not really "processes", just kernel threads or kernel-level processes (for lack of better term). > Question 4. Are there other tools that I can use to accurately get the running processes that are eating the actual CPU resources on the machine? The utilities you're using are correct (ps and top), but I don't know why you're using top -S since it's pretty apparent you don't know how to read the output. :-) You shouldn't be using -S if you're just interested in actual processes on the UNIX machine itself. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |
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