7.1-PRERELEASE: arcmsr write performance problem
Paul MacKenzie
bsdlist at cogeco.ca
Tue Dec 16 15:36:52 PST 2008
> What does top -S show ? Most of the load is in system. Does the
> machine in question have a rather large master.passwd file by chance ?
> (http://www.freebsd.org/cgi/query-pr.cgi?pr=75855)
> ---Mike
>
Thanks for your quick reply:
master.passwd is only 9467 (with a ls-l)
TOP -ISM at times shows syncer at the top but this ranges and is not
always near the top.
last pid: 55084; load averages: 17.74, 10.08,
5.58 up
0+10:19:24 15:05:23
290 processes: 50 running, 218 sleeping, 14 waiting, 8 lock
CPU: 15.4% user, 0.0% nice, 68.3% system, 3.0% interrupt, 13.2% idle
Mem: 795M Active, 3279M Inact, 492M Wired, 6116K Cache, 214M Buf, 11G Free
Swap: 8192M Total, 8192M Free
PID USERNAME VCSW IVCSW READ WRITE FAULT TOTAL PERCENT
COMMAND
54 root 2 0 0 7 0 7 100.00% syncer
Here is a top with it not fully locked but high system usage.
last pid: 55468; load averages: 9.93, 11.31,
8.99 up
0+10:32:58 15:18:57
259 processes: 19 running, 215 sleeping, 14 waiting, 11 lock
CPU: 19.1% user, 0.0% nice, 58.2% system, 1.9% interrupt, 20.8% idle
Mem: 635M Active, 3258M Inact, 481M Wired, 6856K Cache, 214M Buf, 11G Free
Swap: 8192M Total, 8192M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU
COMMAND
18 root 1 171 ki31 0K 16K RUN 0 439:32 31.15%
idle: cpu0
55422 www 1 102 0 193M 59632K RUN 5 0:26 30.96% httpd
12 root 1 171 ki31 0K 16K RUN 6 522:14 28.37%
idle: cpu6
54 root 1 20 - 0K 16K syncer 2 81:19 28.37%
syncer
15 root 1 171 ki31 0K 16K RUN 3 465:15 26.56%
idle: cpu3
55411 www 1 -4 0 157M 33704K *vnode 1 0:21 26.17% httpd
55388 www 1 -4 0 160M 35940K *vnode 1 0:14 26.17% httpd
13 root 1 171 ki31 0K 16K RUN 5 509:35 25.98%
idle: cpu5
11 root 1 171 ki31 0K 16K RUN 7 525:53 25.88%
idle: cpu7
14 root 1 171 ki31 0K 16K RUN 4 491:32 25.29%
idle: cpu4
55453 www 1 101 0 157M 33608K CPU7 7 0:08 24.76% httpd
55365 www 1 -4 0 157M 33408K ufs 3 0:23 24.56% httpd
55440 www 1 69 0 154M 31180K CPU2 7 0:09 24.37% httpd
55412 www 1 -4 0 153M 30156K *vnode 3 0:07 23.97% httpd
16 root 1 171 ki31 0K 16K CPU2 2 444:38 23.88%
idle: cpu2
55376 www 1 -4 0 158M 34776K *vnode 0 0:26 23.88% httpd
55459 www 1 -4 0 145M 23920K *vnode 1 0:07 23.49% httpd
55467 www 1 70 0 154M 31056K *vnode 7 0:09 22.66% httpd
17 root 1 171 ki31 0K 16K CPU1 1 443:27 20.90%
idle: cpu1
55374 www 1 -4 0 146M 25312K *vnode 7 0:09 13.38% httpd
55418 www 1 -4 0 145M 24192K ufs 0 0:18 12.89% httpd
55400 www 1 58 0 146M 25460K select 5 0:20 12.79% httpd
55443 www 1 -4 0 148M 25788K *vnode 1 0:03 12.50% httpd
55410 www 1 -4 0 147M 25700K *vnode 7 0:05 12.26% httpd
55438 www 1 -4 0 145M 24148K RUN 4 0:08 11.96% httpd
21 root 1 -44 - 0K 16K WAIT 0 34:45 11.77%
swi1: net
55451 www 1 -4 0 144M 22704K *vnode 7 0:02 10.99% httpd
55447 www 1 60 0 145M 24008K select 2 0:07 10.50% httpd
55406 www 1 53 0 146M 25324K select 2 0:19 9.77% httpd
55433 www 1 49 0 146M 24912K select 2 0:11 8.06% httpd
55448 www 1 52 0 144M 22972K RUN 6 0:03 8.06% httpd
55383 www 1 45 0 145M 24284K select 2 0:12 7.96% httpd
55446 www 1 44 0 146M 24988K select 3 0:09 7.96% httpd
55430 www 1 4 0 145M 24136K kqread 0 0:03 6.69% httpd
55432 www 1 20 0 146M 24324K lockf 3 0:04 6.05% httpd
55464 www 1 -4 0 145M 23464K RUN 0 0:02 5.66% httpd
55424 www 1 45 0 146M 24876K select 6 0:08 3.66% httpd
55442 www 1 47 0 145M 23852K select 3 0:03 3.56% httpd
55373 www 1 48 0 146M 25364K select 5 0:07 3.17% httpd
55375 www 1 46 0 146M 25420K select 2 0:15 3.08% httpd
19 root 1 -32 - 0K 16K *Giant 2 9:02 2.98%
swi4: clock sio
48518 wusage 1 46 0 10424K 2632K select 4 2:50 2.78%
wusage
1490 mysql 97 4 -5 402M 184M sbwait 4 0:29 2.78%
mysqld
55372 www 1 47 0 144M 22136K CPU6 0 0:01 2.59% httpd
55437 root 1 -32 0 9136K 2940K CPU4 4 0:01 2.59% top
55387 www 1 45 0 144M 22196K CPU5 1 0:02 2.39% httpd
55468 www 1 20 0 144M 21904K lockf 4 0:00 1.56% httpd
55441 www 1 45 0 144M 22088K select 5 0:01 1.46% httpd
51563 root 1 4 0 11848K 5540K connec 5 0:09 1.37%
sendmail
55458 www 1 45 0 144M 22140K select 6 0:01 1.17% httpd
55336 root 1 51 0 144M 21888K CPU0 0 0:05 1.07% httpd
55455 www 1 45 0 144M 21992K select 0 0:01 1.07% httpd
55425 www 1 20 0 146M 25304K lockf 3 0:07 0.78% httpd
55415 www 1 45 0 144M 22192K select 7 0:01 0.68% httpd
55439 www 1 44 0 144M 22308K select 1 0:01 0.49% httpd
51561 root 1 45 0 11848K 5400K select 0 0:13 0.29%
sendmail
54666 root 1 4 0 10824K 4496K connec 3 0:04 0.20%
sendmail
55469 root 1 51 0 144M 21888K CPU3 3 0:00 0.00% httpd
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