Re: High CPU utilization detection from a kernel module

["Vaughn Clinton" <vclinton@xxxxxxx>]

There's a tool called "collectL" donated by HP/Compaq.  It's a very good tool for capturing and analyzing performance related data.  The good thing is you can sample at a higher resolution than SAR with a low overhead.. 

 

Here's the link: http://collectl.sourceforge.net/

 

Cheers,

 

From: Bizhan Gholikhamseh (bgholikh)

Sent: Tuesday, September 23, 2008 6:26 PM

To: Kernel Newbies

Subject: High CPU utilization detection from a kernel module

HI

Is there any mechanism by which a kernel module can detect high CPU utilization? I can use sar and vmstat in the userland to monitor CPU utilization, but I need a way to detect it at kernel level for example 100% CPU utilization for over 10 msec or evern 1 sec.

 

Thanks,

Bizhan