[rhn-users] Re: Welcome to the " rhn-users " mailing list

[Sergey Esin]

Hi list,

I am running RHEL 4 U1 on HP Proliant DL 385 (Dual AMD):

>$ uname -a
>Linux server1 2.6.9-11.ELsmp #1 SMP Fri May 20 18:25:30 EDT 2005 x86_64 x86_64 x86_64 GNU/Linux
>
>$ cat /proc/cpuinfo | grep "model name"
>model name      : AMD Opteron(tm) Processor 250
>model name      : AMD Opteron(tm) Processor 250
>
>$cat /etc/redhat-release
>Red Hat Enterprise Linux ES release 4 (Nahant Update 1)

All updates are installed.

I have a very strange top/ps output.

It seems that I have one CPU (second one) loaded to 99%-100%.

>$ top -b | head -4
>top - 21:06:15 up 4 days,  6:27,  4 users,  load average: 2.03, 2.09, 2.06
>Tasks: 134 total,   1 running, 133 sleeping,   0 stopped,   0 zombie
>Cpu(s): 62.9% us,  0.1% sy,  0.0% ni, 36.6% id,  0.3% wa,  0.0% hi,  0.0% si
>Mem:   3090116k total,  3034740k used,    55376k free,   123760k buffers


But I can not find any process that can waist such a lot CPU power:

$ /bin/ps -eo pcpu | sort -rn | uniq
 0.1
%CPU
 0.0

Currently I am running the kernel with "acpi=off" in /etc/grub.conf but this issue remains that same on another similar box.

Please help me to understand that is wrong and how can I get the actual picture when using "ps" or "top" tools.

Thanks,
Sergey