strange behaviour on FreeBSD 7.1

[Коньков Евгений]

Hi.

Sometimes system goes to this situation: 0% idle and no processes take CPU time

#top -SIHP
last pid: 62813;  load averages:  4.17,  3.64,  2.16   up 28+06:44:02  20:41:41
155 processes: 7 running, 129 sleeping, 19 waiting
CPU: 99.3% user,  0.0% nice,  0.7% system,  0.0% interrupt,  0.0% idle
Mem: 177M Active, 27M Inact, 124M Wired, 13M Cache, 60M Buf, 148M Free
Swap: 2048M Total, 51M Used, 1997M Free, 2% Inuse

  PID USERNAME   PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND

#top
last pid: 62852;  load averages:  4.10,  3.67,  2.22   up 28+06:44:36  20:42:15
172 processes: 4 running, 168 sleeping
CPU: 99.6% user,  0.0% nice,  0.4% system,  0.0% interrupt,  0.0% idle
Mem: 203M Active, 27M Inact, 125M Wired, 13M Cache, 60M Buf, 121M Free
Swap: 2048M Total, 51M Used, 1997M Free, 2% Inuse

  PID USERNAME    THR PRI NICE   SIZE    RES STATE    TIME   WCPU COMMAND
62817 root         36  -8    0 29696K 23276K piperd   0:00  7.62% perl5.8.8
64644 root          1  44    0  3532K  1048K select  22:20  0.00% screen
 8862 root          1   8    0  9192K  2460K nanslp  17:18  0.00% verlihub
 8450 icecast       6   8    0  8812K  1116K nanslp   5:38  0.00% icecast
  698 root          1  44    0  3180K   872K select   4:21  0.00% syslogd
61307 root          1  96    0  6992K  2724K RUN      4:20  0.00% proftpd
61902 root          1  96    0  6992K  2608K RUN      3:51  0.00% proftpd
 8435 postfix       1   4    0  6192K   800K kqread   2:40  0.00% qmgr
 8464 root          1   4    0  3124K   960K kqread   1:34  0.00% dovecot
 8424 root          1   4    0  5168K   596K kqread   1:26  0.00% master
 8521 root          1  44    0 18808K  3164K select   1:17  0.00% httpd
 8467 vmail         1   4    0  4276K   796K kqread   0:48  0.00% dovecot-auth
 8541 root          1  45    0  5752K   448K select   0:34  0.00% sshd
 8595 root          1  44    0  3236K   300K select   0:27  0.00% inetd
51383 freeradius    1  96    0 28568K 11408K RUN      0:27  0.00% radiusd
 8314 mysql        10   4    0 47292K  6344K sbwait   0:25  0.00% mysqld
 8216 root          1  44    0  6992K   612K select   0:23  0.00% proftpd

    1 users    Load  4.07  3.69  2.26                  17 ноя 20:42

Mem:KB    REAL            VIRTUAL                       VN PAGER   SWAP PAGER
        Tot   Share      Tot    Share    Free           in   out     in   out
Act  205392   12432   631916    40980  137912  count
All  278608   16052  2787452    57020          pages
Proc:                                                            Interrupts
  r   p   d   s   w   Csw  Trp  Sys  Int  Sof  Flt     95 cow    2071 total
  4      39 128      5733  306 2386   65  31k  255     76 zfod        sio1 irq3
                                                          ozfod       sio0 irq4
 1.2%Sys   0.6%Intr 98.2%User  0.0%Nice  0.0%Idle        %ozfod     7 ata0 irq14
|    |    |    |    |    |    |    |    |    |    |       daefr    58 rl0 rl4 17
=>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>    132 prcfr  2006 cpu0: time
                                        87 dtbuf      186 totfr
Namei     Name-cache   Dir-cache     35373 desvn        2 react
   Calls    hits   %    hits   %     10855 numvn          pdwak
    1123    1009  90                  8152 frevn          pdpgs
                                                          intrn
Disks   ad1                                        127712 wire
KB/t  11.33                                        207692 act
tps       7                                         27820 inact
MB/s   0.08                                         13612 cache
%busy     0                                        124300 free

uname -a
FreeBSD i.net.ua 7.1-RELEASE FreeBSD 7.1-RELEASE #0: Sat Jan  3
01:15:39 EET 2009     kes at i.net.ua:/usr/obj/usr/src/sys/KES_KERN_v7  i386


-- 
С уважением,
 Коньков                          mailto:kes-kes at yandex.ru