netdev - Re: [Bugme-new] [Bug 15239] New: Problem with network performance after a while.

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Date:	Tue, 09 Feb 2010 08:46:02 +0100
From:	Paweł Staszewski <pstaszewski@...are.pl>
To:	Eric Dumazet <eric.dumazet@...il.com>
CC:	David Miller <davem@...emloft.net>, akpm@...ux-foundation.org,
	netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net,
	bugzilla-daemon@...zilla.kernel.org,
	bugme-daemon@...zilla.kernel.org, jeffrey.t.kirsher@...el.com,
	jesse.brandeburg@...el.com, bruce.w.allan@...el.com,
	alexander.h.duyck@...el.com, peter.p.waskiewicz.jr@...el.com,
	john.ronciak@...el.com, pstaszewski@...com.pl, stable@...nel.org
Subject: Re: [Bugme-new] [Bug 15239] New: Problem with network performance
 after a while.

W dniu 2010-02-09 08:36, Eric Dumazet pisze:
> Le mardi 09 février 2010 à 08:19 +0100, Paweł Staszewski a écrit :
>    
>> W dniu 2010-02-08 23:55, David Miller pisze:
>>      
>>> From: Andrew Morton<akpm@...ux-foundation.org>
>>> Date: Mon, 8 Feb 2010 14:15:13 -0800
>>>
>>>
>>>        
>>>> That would be bad.  That's a regression in 2.6.33-rc, and we've
>>>> backported that regression into 2.6.32.x -stable.
>>>>
>>>>          
>>> Luckily we have a fix already. :-)
>>>
>>>        
>> Yes - i make bugreport and after i write also here on the list
>>
>> And Eric Dumazet help to solve problem with "route cache" - and locking
>> load on one cpu after information about "route cache disabled".
>>
>> After his patch i don't see any errors in dmesg.
>>
>>      
> OK, but this is real old bug (since 2.6.24), not a 2.6.32/2.6.33
> regression...
>
> You were just lucky not hitting it before, probably because you tried
> different settings.
>
>
>    
Yes i think it was all about change of settings.
I start to search what settings will be the best - with some experiments 
- about what will happen if....



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