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From: Jarek Poplawski <jarkao2@gmail.com>
To: Badalian Vyacheslav <slavon@bigtelecom.ru>
Cc: netdev@vger.kernel.org
Subject: Re: Machine Check Exception Re: NetDev! Please help!
Date: Tue, 23 Sep 2008 20:26:08 +0200	[thread overview]
Message-ID: <20080923182607.GA2992@ami.dom.local> (raw)
In-Reply-To: <48D8DE33.6000605@bigtelecom.ru>

Badalian Vyacheslav wrote, On 09/23/2008 02:16 PM:
...
> I simple hope that after divide to bands/queues and go back to network
> all packets save "First in and First Out" logic that needed in services
> like video streaming...

Of course this is aimed at, and if it's really first in per flow, and
flows are bound to devs/irqs, after hashing should be the same. But...
shit happens - e.g. recently there has been fixed a bug in the hash
which could change this order. And you should remember this default
qdisc is prioritized fifo, so you should be careful with TOS etc. 

>> sch_multiq doesn't use any params for hashing now - it uses mapping
>> in packets to separate them to different bands/queues. So, by default
>> it'll respect common hashing. You can change this using any filter with
>> act_skbedit (Documentation/networking/multiqueue.txt).
>>
>>   
> Ok! I will read all related information and rewrite all tc generate
> scripts to test it!

Do you mean net-next? I think you should first do some tests if you
really need this.

...
> not to worry ;) Thanks again. I try last -next git after someone fix
> Intel exception issue ;)

I think, maybe you could try what Ingo Molnar asked: -tip git, for now?

Jarek P.

  reply	other threads:[~2008-09-23 18:25 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-20 13:19 NetDev! Please help! Badalian Vyacheslav
2008-09-20 13:38 ` Badalian Vyacheslav
2008-09-20 18:11 ` Denys Fedoryshchenko
2008-09-21 16:11   ` Jarek Poplawski
     [not found]     ` <48D7385D.40107@bigtelecom.ru>
2008-09-22  6:53       ` Machine Check Exception " Jarek Poplawski
2008-09-22  8:05         ` Jarek Poplawski
2008-09-22  9:40         ` Badalian Vyacheslav
2008-09-22 11:24           ` Jarek Poplawski
2008-09-22 13:00             ` Badalian Vyacheslav
2008-09-22 17:23               ` Jarek Poplawski
2008-09-23  7:43                 ` Badalian Vyacheslav
2008-09-23  9:25                   ` Jarek Poplawski
2008-09-23 10:36                     ` Badalian Vyacheslav
2008-09-23 11:57                       ` Jarek Poplawski
2008-09-23 12:06                         ` Jarek Poplawski
2008-09-23 12:16                         ` Badalian Vyacheslav
2008-09-23 18:26                           ` Jarek Poplawski [this message]
2008-09-20 18:31 ` Machine Check Exception Was: " Jarek Poplawski

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