Kris Kennaway wrote:
Ott Köstner wrote:
Kris Kennaway wrote:
Ott Köstner wrote:
Kris Kennaway wrote:
Ott Köstner wrote:
Jeremy Chadwick wrote:
On Sun, Nov 16, 2008 at 04:34:01PM +0200, Ott Köstner wrote:
On several FreeBSD machines I have the following problem:


What FreeBSD version?  (It matters)
7.1-PRERELEASE FreeBSD

But I can experience it also on a 7.0 machine. Seems that top reports
incorrectly processes with multiple threads.

$ top -bUbind
last pid: 21635;  load averages:  0.73,  0.46,  0.29  up 1+00:17:18
16:48:10
54 processes:  1 running, 53 sleeping

Mem: 66M Active, 1174M Inact, 204M Wired, 36K Cache, 112M Buf, 555M Free
Swap: 2048M Total, 2048M Free

PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 979 bind 8 44 0 40288K 32916K select 0 0:16 0.00% named

$ ps -ax|grep 979
 979  ??  Ss     1:11.26 /usr/sbin/named -n 5 -t /var/named -u bind

Check top -H to display the statistics for individual threads.

Kris
# top -bUmysql
last pid: 8336; load averages: 0.33, 0.30, 0.24 up 13+22:36:29 08:47:07
157 processes: 1 running, 156 sleeping

Mem: 1163M Active, 2058M Inact, 555M Wired, 160M Cache, 214M Buf, 22M Free
Swap: 4096M Total, 432K Used, 4095M Free


PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND 1079 mysql 9 20 0 92316K 70472K sigwai 1 0:04 0.00% mysqld 1015 mysql 1 8 0 7056K 1332K wait 1 0:00 0.00% sh

-------------------------------------------------------------------------------------------------------------
# top -bHUmysql
last pid: 8497; load averages: 0.36, 0.32, 0.25 up 13+22:37:43 08:48:21
148 processes: 4 running, 144 sleeping

Mem: 1147M Active, 2068M Inact, 554M Wired, 156M Cache, 214M Buf, 32M Free
Swap: 4096M Total, 432K Used, 4095M Free


PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
1079 mysql         44    0 92316K 70472K select 0   4:10  0.00% mysqld
1079 mysql         44    0 92316K 70472K select 0   3:12  0.00% mysqld
1079 mysql         44    0 92316K 70472K select 1   1:59  0.00% mysqld
1079 mysql         44    0 92316K 70472K ucond  0   0:47  0.00% mysqld
1079 mysql         44    0 92316K 70472K select 0   0:26  0.00% mysqld
1079 mysql         20    0 92316K 70472K sigwai 1   0:04  0.00% mysqld
1079 mysql         44    0 92316K 70472K ucond  0   0:04  0.00% mysqld
1079 mysql         44    0 92316K 70472K ucond  1   0:01  0.00% mysqld
1015 mysql          8    0  7056K  1332K wait   1   0:00  0.00% sh
1079 mysql         44    0 92316K 70472K ucond  0   0:00  0.00% mysqld
--------------------------------------------------------------------------------------------------------------

This seems to be the only inconsistent one:

# ps -ax|grep 1079
1079 con- S    576:13.90 [mysqld]

Check that your ps binary is in sync with your kernel, i.e. rebuild world with the same sources you used to build your kernel.

Kris

I did that. First, downloaded source with csup, built world, kernel, installed kernel and world. Then rebuilt kernel once again and installed it.

On another machine (w/ 32bit kernel):

# top -bU bind; top -bHU bind
last pid: 21738; load averages: 0.02, 0.20, 0.27 up 12+18:08:53 10:39:45
56 processes:  1 running, 55 sleeping

Mem: 207M Active, 1494M Inact, 223M Wired, 70M Cache, 112M Buf, 4700K Free
Swap: 2048M Total, 12K Used, 2048M Free


 PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
 979 bind        8  44    0 52576K 44652K select 1   9:42  0.00% named
======================================^^^^^^

last pid: 21739; load averages: 0.02, 0.20, 0.27 up 12+18:08:53 10:39:45
56 processes:  1 running, 55 sleeping

Mem: 207M Active, 1494M Inact, 223M Wired, 70M Cache, 112M Buf, 4712K Free
Swap: 2048M Total, 12K Used, 2048M Free


 PID USERNAME PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
 979 bind      44    0 52576K 44652K select 1   9:42  0.00% named
 979 bind      44    0 52576K 44652K ucond  1   5:52  0.00% named
 979 bind      44    0 52576K 44652K ucond  0   5:51  0.00% named
 979 bind      44    0 52576K 44652K ucond  0   5:50  0.00% named
 979 bind      44    0 52576K 44652K ucond  1   5:49  0.00% named
 979 bind      44    0 52576K 44652K ucond  1   5:48  0.00% named
 979 bind      44    0 52576K 44652K ucond  1   0:16  0.00% named
 979 bind      20    0 52576K 44652K sigwai 1   0:00  0.00% named

# ps -aHx | grep 979; echo ;ps -ax | grep 979
 979  ??  Is     0:00.01 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     5:49.41 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     5:50.73 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     5:50.36 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     5:52.14 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     5:48.15 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     0:15.69 /usr/sbin/named -n 5 -t /var/named -u bind
 979  ??  Ss     9:41.68 /usr/sbin/named -n 5 -t /var/named -u bind
21761  p0  R+     0:00.00 grep 979

 979  ??  Ss    39:08.18 /usr/sbin/named -n 5 -t /var/named -u bind
=============^^^^

Here is the problem. top returns only 9:42 -- the time of the first thread. ps returns the sum of the thread times, which is correct.

Best regards,
O.K.




21763  p0  R+     0:00.01 grep 979

Well, that one makes sense, it's the sum of the thread run times. The previous one you posted wasn't though - maybe you didn't paste in all of the threads?

Kris




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