[Linux-PowerEdge] Fwd: syslog gets hosed with CPU power

Anthony Ciani aciani at sivananthanlabs.us
Tue Sep 3 14:47:13 CDT 2013


Fred,

Those are just notifications that the load on the CPU reached some limit and
then went back down to normal.  From the times you gave, it looks like a
high load program runs on the machine for about an hour, stops, and then
about an hour later the machine is used again.

The messages are just informative, and really do nothing other than tell you
that the CPU is being used at 80+%.  For an HPC cluster, those messages may
as well not even exist.

They can supposedly be disabled by passing clearcpuid=299 as a kernel
parameter.

You could also edit your syslog.conf to reduce the verbosity of the message
or direct them to another log location.

https://bugzilla.kernel.org/show_bug.cgi?id=36182




Date: Mon, 2 Sep 2013 20:57:38 +0200
From: Fred van Zwieten <fvzwieten at vxcompany.com>

Hi,

We have a bunch of R620's with up-to-date RHEL6.4 OS on them. BIOS is 1.6.0
and system firmware 1.37.35 (Build 02). Afaik all is current level.

I get this in my /var/log/messages file:

Sep  2 10:28:14 svg008 kernel: CPU1: Core power limit normal 
Sep  2 10:28:14 svg008 kernel: CPU3: Core power limit normal 
Sep  2 10:28:14 svg008 kernel: CPU5: Core power limit normal 
Sep  2 10:28:14 svg008 kernel: CPU7: Core power limit normal 
Sep  2 10:28:14 svg008 kernel: CPU3: Package power limit normal 
Sep  2 10:28:14 svg008 kernel: CPU5: Package power limit normal 
Sep  2 11:36:22 svg008 kernel: CPU1: Core power limit notification (total
events = 93314) 
Sep  2 11:36:22 svg008 kernel: CPU3: Core power limit notification (total
events = 93290) 
Sep  2 11:36:22 svg008 kernel: CPU5: Core power limit notification (total
events = 93304) 
Sep  2 11:36:22 svg008 kernel: CPU7: Core power limit notification (total
events = 92976) 
Sep  2 11:36:22 svg008 kernel: CPU3: Package power limit notification (total
events = 93802)
Sep  2 11:36:22 svg008 kernel: CPU5: Package power limit notification (total
events = 93911)
Sep  2 11:36:22 svg008 kernel: CPU7: Package power limit notification (total
events = 93754)
Sep  2 11:36:22 svg008 kernel: CPU1: Package power limit notification (total
events = 93562)
Sep  2 11:36:22 svg008 kernel: CPU1: Core power limit normal
Sep  2 11:36:22 svg008 kernel: CPU3: Core power limit normal
Sep  2 11:36:22 svg008 kernel: CPU5: Core power limit normal
Sep  2 11:36:22 svg008 kernel: CPU7: Core power limit normal
<snip>
<-snip->
Temperatures on all machines is well below warning level according to iDrac.
<snip>
<-snip->
Any thoughts?

Regards,

Fred




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