linux-kernel - Re: cpu load balancing problem on smp

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Message-ID: <45C8EA79.1030309@fliagreco.com.ar>
Date:	Tue, 06 Feb 2007 17:52:09 -0300
From:	Pablo Sebastian Greco <lkml@...agreco.com.ar>
To:	Arjan van de Ven <arjan@...ux.intel.com>
CC:	Marc Donner <donner@...-breitband.de>, linux-kernel@...r.kernel.org
Subject: Re: cpu load balancing problem on smp

Arjan van de Ven wrote:
> Pablo Sebastian Greco wrote:
>
>> 2296:        427        426        436  134563009   PCI-MSI-edge      
>> eth1
>> 2297:        252        252  135926471        257   PCI-MSI-edge      
>> eth0
>
> this suggests that  cores would be busy rather than only one....
> -
Yes, but you are looking at mm kernel statistics, but if you look at the 
standard kernel, you'll see that eth interrupts are on the same core 
according to attached /proc/cpuinfo.
OTOH, take a look at timer interrupt distribution

View attachment "cpuinfo.txt" of type "text/plain" (3078 bytes)