netdev - Re: deadlocks if use htb

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Message-ID: <48F6FB3E.7060903@bigtelecom.ru>
Date:	Thu, 16 Oct 2008 12:28:46 +0400
From:	Badalian Vyacheslav <slavon@...telecom.ru>
To:	Jarek Poplawski <jarkao2@...il.com>
CC:	netdev@...r.kernel.org
Subject: Re: deadlocks if use htb

Jarek Poplawski пишет:
> On Fri, Oct 10, 2008 at 09:04:26AM +0000, Jarek Poplawski wrote:
>   
>> On Fri, Oct 10, 2008 at 12:52:58PM +0400, Badalian Vyacheslav wrote:
>>     
>>> Oh... sorry. I Wrong you understand... i patch 2.6.27 with this patch
>>> and will test it...
>>>       
>> No, you understood it right. But it seems 2.6.27 fix doesn't work for
>> you. So, yes, try this patch with 2.6.26 or 2.6.27.
>>     
>
> There is also a parameter you could try (without this patch):
>
> modprobe sch_htb htb_hysteresis=1
>
> Jarek P.
>
>   
>>>>> Please look to if you have time:
>>>>> http://bugzilla.kernel.org/show_bug.cgi?id=11718
>>>>>
>>>>> We have deadlocks at few PC one times in week.
>>>>> I can test any patches to detect and fix problem.
>>>>> Now i test 2.6.27-rc kernel at one PC.
>>>>>     
>>>>>           
>>>> A similar bug was reported by Denys Fedoryshchenko but it wasn't fully
>>>> diagnosed. Anyway it looks like hardware dependent. The patch below
>>>> can sometimes help. 2.6.27 may have this fixed too (some other way).
>>>>
>>>> Jarek P.
>>>>         
>
>   
Sorry for long answer.

We have troubles with power in our server place. Now its gone and i will
test again all this.

With patch +  htb_hysteresis=0 and htb_hysteresis=1 without patch all PC
work done 2 days and 18 hours. After this we have power crash.... =(

Thanks
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