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Obsolete Releases => SME Server 7.x => Topic started by: sandoz on September 03, 2007, 01:37:59 PM

Title: cpu usage too high
Post by: sandoz on September 03, 2007, 01:37:59 PM: since a month or so i noticed my cpu usage is constantly at around 0.60-0.90.
to me it seems no processes are killing the cpu:
Code: [Select]
top - 13:35:30 up 3:29, 1 user, load average: 1.67, 1.22, 1.02 Tasks: 178 total, 1 running, 168 sleeping, 9 stopped, 0 zombie Cpu(s): 35.6% us, 3.0% sy, 0.0% ni, 61.4% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 483428k total, 337944k used, 145484k free, 26664k buffers Swap: 983032k total, 1384k used, 981648k free, 108012k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1812 root 17 0 3268 1028 760 R 1.3 0.2 0:09.69 top 5027 root 16 0 6084 1744 1428 S 0.7 0.4 0:00.02 sshd 5030 sshd 15 0 6084 1216 888 S 0.7 0.3 0:00.02 sshd 2539 root 15 0 1880 216 172 S 0.3 0.0 0:07.60 runsv 5245 root 16 0 7920 1944 1572 S 0.3 0.4 0:08.06 sshd 1 root 16 0 3072 624 540 S 0.0 0.1 0:01.76 init 2 root 34 19 0 0 0 S 0.0 0.0 0:00.07 ksoftirqd/0 3 root 5 -10 0 0 0 S 0.0 0.0 0:00.12 events/0 4 root 5 -10 0 0 0 S 0.0 0.0 0:00.02 khelper 5 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid 21 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 kblockd/0 22 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd 39 root 15 0 0 0 0 S 0.0 0.0 0:00.66 pdflush 40 root 15 0 0 0 0 S 0.0 0.0 0:01.92 pdflush 42 root 7 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0 41 root 16 0 0 0 0 S 0.0 0.0 0:08.21 kswapd0 188 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod 303 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kmirrord 309 root 15 0 0 0 0 S 0.0 0.0 0:00.09 md2_raid1 311 root 15 0 0 0 0 S 0.0 0.0 0:00.00 md1_raid1 316 root 15 0 0 0 0 S 0.0 0.0 0:06.26 kjournald 1284 root 6 -10 2408 444 372 S 0.0 0.1 0:00.02 udevd 1715 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kauditd 1771 root 15 0 0 0 0 S 0.0 0.0 0:00.00 kjournald 1772 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald 2243 root 18 0 3468 412 356 S 0.0 0.1 0:00.00 mingetty 2287 root 18 0 2740 412 356 S 0.0 0.1 0:00.00 mingetty 2288 root 16 0 2688 300 244 S 0.0 0.1 0:00.04 runsvdir 2533 root 16 0 1840 216 172 S 0.0 0.0 0:00.00 runsv 2534 root 16 0 2464 216 172 S 0.0 0.0 0:00.00 runsv 2538 root 16 0 1464 216 172 S 0.0 0.0 0:00.00 runsv 2540 root 16 0 3224 216 172 S 0.0 0.0 0:00.00 runsv 2541 root 16 0 2028 216 172 S 0.0 0.0 0:00.00 runsv 2542 root 16 0 2368 216 172 S 0.0 0.0 0:00.00 runsv 2543 root 16 0 2880 216 172 S 0.0 0.0 0:00.00 runsv 2544 root 16 0 2208 216 172 S 0.0 0.0 0:00.00 runsv 2545 root 16 0 1808 216 172 S 0.0 0.0 0:00.00 runsv 2546 root 16 0 2616 216 172 S 0.0 0.0 0:00.00 runsv(http://i5.tinypic.com/4z3tjkm.png)

what could cause this?
Title: Re: cpu usage too high
Post by: chris burnat on September 03, 2007, 02:17:27 PM: When running top you can press "1" (one) to expand the Cpu(s) line.
This should show the culprit.
Title: Re: cpu usage too high
Post by: Daniel B. on September 03, 2007, 02:22:38 PM: You can use htop instead of top, by default it short by CPU usage (maybe so does top, I never use it). I usually find which process eats up ressources with it
Title: Re: cpu usage too high
Post by: sandoz on September 03, 2007, 05:23:37 PM: Code: [Select]
CPU[||||||||||||||||||| 29.8%] Tasks: 158 total, 2 running Mem[|||||||||||||||||||||||||||||||||||||||| 137/472MB] Load average: 0.45 0.54 0.47 Swp[ 0/959MB] Uptime: 03:37:27 Send signal: PID USER PRI NI VIRT RES SHR S CPU% MEM% TIME+ Command 0 Cancel 29869 root 17 0 4180 1048 924 S 100. 0.2 0:00.00 /bin/sh ./run 1 SIGHUP 27065 root 17 0 3040 1100 836 R 1.6 0.2 0:39.12 htop 2 SIGINT 29870 root 19 0 5724 1832 1296 R 0.8 0.3 0:00.03 /usr/bin/perl -w /sbin/e-smith/db configuration getprop smb st 16 0 2336 216 172 S 0.0 0.0 0:00.00 runsv cvm-unix-local
it takes up 100% cpu
Title: Re: cpu usage too high
Post by: Daniel B. on September 03, 2007, 05:26:35 PM: It could be a supervised process which have a problem. Maybe a tail -f /var/log/messages can help you
Title: Re: cpu usage too high
Post by: judgej on September 04, 2007, 01:28:51 AM: A month ago, I found processes within the sme7admin contrib itself was hitting the processor at 100% for much of the time. The problem went away after uninstalling sme7admin.

-- JJ
Title: Re: cpu usage too high
Post by: chris burnat on September 04, 2007, 01:43:42 AM: Quote from: judgej on September 04, 2007, 01:28:51 AM
A month ago, I found processes within the sme7admin contrib itself was hitting the processor at 100% for much of the time. The problem went away after uninstalling sme7admin.

-- JJ

Yep, this can happen for example if you enable Activate du -s: in settings. There is a warning:
"You can choose to activate the computing of the main directories' size of SME. (maybe long and resource-consuming on large disks)"
Disabling this feature is best.
Title: Re: cpu usage too high
Post by: sandoz on September 04, 2007, 09:27:21 AM: looks like samba is eating up resources...What could cause that?
If i stop smb, cpu usage goes down to 0% again
Title: Re: cpu usage too high
Post by: byte on September 04, 2007, 11:06:36 AM: You haven't said what hardware your running ?
Title: Re: cpu usage too high
Post by: sandoz on September 04, 2007, 11:44:23 AM: Via Epia MB, 512 Mb ram, 1x40Gb HD(OS), 1x120Gb HD(backup etc), extra ethernet card
actually what is eating the cpu seems to be nmbd

when i do: service smb stop, cpu usage goes down immediately
Title: Re: cpu usage too high
Post by: judgej on September 04, 2007, 01:12:26 PM: Quote from: burnat on September 04, 2007, 01:43:42 AM
Yep, this can happen for example if you enable Activate du -s: in settings. There is a warning:
"You can choose to activate the computing of the main directories' size of SME. (maybe long and resource-consuming on large disks)"
Disabling this feature is best.

Thanks - I never spotted that. Also not sure about the 'maybe' ;-)
Title: Re: cpu usage too high
Post by: sandoz on September 04, 2007, 04:32:59 PM: problem solved: there was a non exisiting ip adres in the smb.conf
now its ok again