netdev - Re: weird problem

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Message-ID: <20090630064022.GA5589@ff.dom.local>
Date:	Tue, 30 Jun 2009 06:40:22 +0000
From:	Jarek Poplawski <jarkao2@...il.com>
To:	=?ISO-8859-2?Q?Pawe=B3_Staszewski?= 
	<pstaszewski@...are.pl>
Cc:	Eric Dumazet <dada1@...mosbay.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Linux Network Development list <netdev@...r.kernel.org>
Subject: Re: weird problem

On 26-06-2009 19:45, Pawe. Staszewski wrote:
> Eric Dumazet pisze:
...
>> Pawel made some reports errors in fib thread, so I am not sure he really
>>  tried 2.6.30 and had same oprofile results.
>>
>> rt_worker_func() taking 13% of cpu0 is an alarm for me :)
>> And 21% of cpu0 and 34% of cpu6 taken by oprofiled seems odd too...
>>
>> Pawel, could you give us :
>>
>> grep . /proc/sys/net/ipv4/route/*
>> cat /proc/interrupts
>>
>> on your various kernels (previous to 2.6.29, 2.6.29, 2.6.30, ...)
>>
>> I suspect a change in hash table size, and/or change in interrupt affinities...

Btw., Pawel these eth0's don't look like affined or I miss something?

Jarek P.
...
> 
> cat /proc/interrupts
>            CPU0       CPU1       CPU2       CPU3       CPU4       
> CPU5       CPU6       CPU7
...
>  29:    1139988   18351004      89662          3          0          
> 1          0          3   PCI-MSI-edge      eth0
>  30:          0          2   20221692          1          0          
> 3          0          0   PCI-MSI-edge      eth1
...
> second machine:
> Linux TM_02_C1 2.6.30 #1 SMP Thu Jun 25 21:49:58 CEST 2009 i686 Intel(R) 
> Xeon(R) CPU 3075 @ 2.66GHz GenuineIntel GNU/Linux
> 
> cat /proc/interrupts
>            CPU0       CPU1
...
>  28:      13482      11260   PCI-MSI-edge      eth2
>  29:          3 1326457765   PCI-MSI-edge      eth1
>  30: 1240943198  137973134   PCI-MSI-edge      eth0
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