kern/122915: Incorrect system cpu load

[Igor Melnikovsky]

>Number:         122915
>Category:       kern
>Synopsis:       Incorrect system cpu load
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Apr 19 17:00:04 UTC 2008
>Closed-Date:
>Last-Modified:
>Originator:     Igor Melnikovsky
>Release:        7.0
>Organization:
itns
>Environment:
FreeBSD vpn54.itns.ru 7.0-STABLE FreeBSD 7.0-STABLE #1: Sat Apr 19 11:11:47 UTC 2008     root at vpn54.itns.ru:/usr/obj/usr/src/sys/SMP  i386

>Description:
I use FreeBSD 7.0 with mpd5 on hign load systat

FreeBSD vpn54.itns.ru 7.0-STABLE FreeBSD 7.0-STABLE #1: Sat Apr 19 11:11:47 UTC 2008     root at vpn54.itns.ru:/usr/obj/usr/src/sys/SMP  i386

                    /0   /1   /2   /3   /4   /5   /6   /7   /8   /9   /10
     Load Average   ||

                    /0%  /10  /20  /30  /40  /50  /60  /70  /80  /90  /100
root     idle: cpu3 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu4 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu5 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu6 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu7 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu2 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu1 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
root      em0 taskq XXXXXXXXXXXXXXXXXXXXXX
root     idle: cpu0 XXXXXXXXXXXXXXXXXXXXXX
root      em1 taskq XXXXXXXXXXXXX
root      swi1: net XXXXXXXXXXXX


top

CPU states:  0.2% user,  0.0% nice,  8.4% system,  3.2% interrupt, 88.3% idle
Mem: 31M Active, 58M Inact, 56M Wired, 92K Cache, 112M Buf, 1848M Free
Swap: 4051M Total, 4051M Free

  PID USERNAME  THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
  602 root        2  96    0 45852K 17532K select 0   0:00  0.10% mpd5
  493 root        1  44    0  4544K  2564K select 6   0:50  0.00% zebra
14853 root        1   8    0  4388K  2364K wait   5   0:41  0.00% bash
  499 root        1  44    0  4544K  2584K select 4   0:20  0.00% ripd
  545 root        1  44    0  3156K  1196K select 1   0:18  0.00% syslogd
  779 root        1  44    0  8384K  3808K select 6   0:05  0.00% sshd
20870 root        1  44    0  8384K  3844K select 3   0:03  0.00% sshd
 2669 root        1  44    0  8384K  3844K select 2   0:02  0.00% sshd
  473 root        1  96    0  1888K   544K select 3   0:01  0.00% devd
19491 root        1  44    0  8384K  3844K select 3   0:00  0.00% sshd
29616 root        1  44    0  3104K   772K select 2   0:00  0.00% ifstat
  715 root        1  96    0  5616K  3248K select 1   0:00  0.00% sshd
21000 root        1  20    0  5476K  2764K pause  4   0:00  0.00% csh
64812 root        1   6    0  3104K   772K ttywri 0   0:00  0.00% ifstat
  727 root        1   8    0  3184K  1248K nanslp 1   0:00  0.00% cron
67029 root        1   5    0  3508K  1948K ttyin  2   0:00  0.00% systat
  783 root        1  20    0  5476K  2576K pause  3   0:00  0.00% csh
19513 root        1  20    0  5476K  2696K pause  3   0:00  0.00% csh
 2774 root        1  20    0  5476K  2592K pause  3   0:00  0.00% csh
  773 root        1   5    0  3156K  1064K ttyin  6   0:00  0.00% getty
  771 root        1   5    0  3156K  1064K ttyin  4   0:00  0.00% getty
  772 root        1   5    0  3156K  1064K ttyin  5   0:00  0.00% getty
  774 root        1   5    0  3156K  1064K ttyin  7   0:00  0.00% getty
  769 root        1   5    0  3156K  1064K ttyin  2   0:00  0.00% getty
  770 root        1   5    0  3156K  1064K ttyin  3   0:00  0.00% getty
  768 root        1   5    0  3156K  1064K ttyin  1   0:00  0.00% getty
  767 root        1   5    0  3156K  1064K ttyin  0   0:00  0.00% getty
71594 root        1  44    0  3488K  1708K CPU3   2   0:00  0.00% top


vpn54# ps uxa | grep idle
root      13 100.0  0.0     0     8  ??  RL   11:27AM 557:57.04 [idle: cpu5]
root      14 100.0  0.0     0     8  ??  RL   11:27AM 557:01.21 [idle: cpu4]
root      15 100.0  0.0     0     8  ??  RL   11:27AM 554:11.58 [idle: cpu3]
root      16 100.0  0.0     0     8  ??  RL   11:27AM 545:15.26 [idle: cpu2]
root      11 98.2  0.0     0     8  ??  RL   11:27AM 559:58.21 [idle: cpu7]
root      12 98.0  0.0     0     8  ??  RL   11:27AM 559:58.96 [idle: cpu6]
root      17 67.3  0.0     0     8  ??  RL   11:27AM 452:15.68 [idle: cpu1]
root      18 40.8  0.0     0     8  ??  RL   11:27AM 385:41.32 [idle: cpu0]



system use only cpu0 and cpu1 ... what's problem? 
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: