Re: ~5x greater CPU load for a networked application when using 2.6.15-rt15-smp vs. 2.6.12-1.1390_FC4

From: Benjamin LaHaise
Date: Thu Feb 23 2006 - 15:17:56 EST


On Thu, Feb 23, 2006 at 02:55:56PM -0500, Gautam H Thaker wrote:
> It has been documented before (and accepted) that this patch turns Linux into
> a RT kernel but considerably slows down the code paths, esp. thru the I/O
> subsystem. I want to provide some additional measurements and seek opinions
> of if it might ever be possible to improve on this situation.

32 bit kernel or 64 bit kernel? What about profiling the system with
oprofile?

-ben
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