netdev - Re: weird problem

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4A49CE8B.7080402@itcare.pl>
Date:	Tue, 30 Jun 2009 10:36:27 +0200
From:	Paweł Staszewski <pstaszewski@...are.pl>
To:	Jarek Poplawski <jarkao2@...il.com>
CC:	Eric Dumazet <dada1@...mosbay.com>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Linux Network Development list <netdev@...r.kernel.org>
Subject: Re: weird problem

sorry i forgot to attach file

Paweł Staszewski pisze:
> Jarek Poplawski pisze:
>> 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
>>>     
>> ...
>>   
> Yes
> it don't look because i switch a little later after some seconds with 
> traffic on this host
>
> Cpu1 - 18351004 interrupts on eth0 (and yes here i forgot to change on 
> boot so there are some interrupts cpu0 1139988 / cpu2 89662)
> Cpu2 - 20221692 interrupts on eth1
>
>
> in attached file are new stats with more counters from /cat 
> /proc/interrupts
>
>
>
>>> 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
>>>     
>>
>>
>>   
>
> -- 
> To unsubscribe from this list: send the line "unsubscribe netdev" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>


View attachment "interrupts_aff.txt" of type "text/plain" (3678 bytes)