[uClinux-dev] High CPU load...

[Nicolas Ferre]

Hi list,

I have a little question to submit to you : why is my cpu load so high ?
A cat /proc/loadavg shows a cpu load of 1.xx quite funny isn't it ? 
I do not want my cpu eat time and power doing nothing...

Is it a boggus /proc/loadavg or have I a crazy loop in my uClinux-dist ?

Here is a log on my 5272 board running a 2.4.17 kernel:

mnt/user/procps> ./oldps aux
USER       PID %CPU %MEM  SIZE   RSS TTY STAT START   TIME COMMAND
#1          48  0.0  0.0    33     0  S0 SW   00:37   0:00 portmap 
root         1  0.0  0.0    16     0   ? SW   00:35   0:01 init 
root         2  0.0  0.0     0     0   ? SW   00:35   0:00 (keventd)
root         3  0.0  0.0     0     0   ? RWN  00:35   0:00 (ksoftirqd_CPU0)
root         4  1.5  0.0     0     0   ? RW   00:35   0:46 (kswapd)
root         5  0.0  0.0     0     0   ? SW   00:35   0:00 (bdflush)
root         6  0.0  0.0     0     0   ? SW   00:35   0:00 (kupdated)
root         7  0.0  0.0     0     0   ? SW   00:35   0:00 (mtdblockd)
root        21  0.0  0.0    12     0   ? SW   00:35   0:00 flatfsd 
root        23  0.0  0.0     0     0   ? SWN  00:35   0:00 (jffs2_gcd_mtd7)
root        44  0.1  0.0    16     0  S0 SW   00:35   0:05 /bin/sh 
root        45  0.0  0.0    12     0   ? SW   00:35   0:00 /bin/inetd 
root        62  0.0  0.0     0     0   ? SW   00:37   0:00 (rpciod)
root        63  0.0  0.0     0     0   ? SW   00:37   0:00 (lockd)
root        84  0.0  0.0    16     0   ? SW   01:10   0:00 /bin/telnetd 
root        85  0.2  0.0    16     0  p0 SW   01:10   0:02 -sh 
root        99  0.0  0.0    81     0  p0 RW  Jul 20   0:00 ./oldps aux 
/mnt/user/procps> cat /proc/loadavg
1.00 1.00 0.91 3/16 99

doing a ls -lR / :

/mnt/user/procps> ./oldps aux
USER       PID %CPU %MEM  SIZE   RSS TTY STAT START   TIME COMMAND
#1          48  0.0  0.0    33     0  S0 SW   00:37   0:00 portmap 
root         1  0.0  0.0    16     0   ? SW   00:35   0:01 init 
root         2  0.0  0.0     0     0   ? SW   00:35   0:00 (keventd)
root         3  0.0  0.0     0     0   ? RWN  00:35   0:00 (ksoftirqd_CPU0)
root         4  1.5  0.0     0     0   ? RW   00:35   0:49 (kswapd)
root         5  0.0  0.0     0     0   ? SW   00:35   0:00 (bdflush)
root         6  0.0  0.0     0     0   ? SW   00:35   0:00 (kupdated)
root         7  0.0  0.0     0     0   ? SW   00:35   0:00 (mtdblockd)
root        21  0.0  0.0    12     0   ? SW   00:35   0:00 flatfsd 
root        23  0.0  0.0     0     0   ? SWN  00:35   0:00 (jffs2_gcd_mtd7)
root        44  0.1  0.0    16     0  S0 SW   00:35   0:05 /bin/sh 
root        45  0.0  0.0    12     0   ? SW   00:35   0:00 /bin/inetd 
root        62  0.0  0.0     0     0   ? SW   00:37   0:00 (rpciod)
root        63  0.0  0.0     0     0   ? SW   00:37   0:00 (lockd)
root        84  0.0  0.0    16     0   ? SW   01:10   0:00 /bin/telnetd 
root        85  0.2  0.0    16     0  p0 SW   01:10   0:02 -sh 
root       100 24.6  0.0    91     0  S0 RW   01:29   0:01 ls -lR / 
root       101  0.0  0.0    82     0  p0 RW  Jul 20   0:00 ./oldps aux 
/mnt/user/procps> cat /proc/loadavg
1.15 1.03 0.92 3/17 101

Thanks for you help.
-- 
Nicolas Ferre, Software Engineer
@work : n.ferre at i2e.fr : http://www.i2e.fr : +33 4 42 60 70 76
@home : nferre at free.fr : http://nferre.free.fr