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From: Eric Dumazet <eric.dumazet@gmail.com>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: netdev@vger.kernel.org
Subject: Re: UDP regression with packets rates < 10k per sec
Date: Wed, 09 Sep 2009 19:08:10 +0200	[thread overview]
Message-ID: <4AA7E0FA.5070005@gmail.com> (raw)
In-Reply-To: <alpine.DEB.1.10.0909091234360.15538@V090114053VZO-1>

Christoph Lameter a écrit :
> On Wed, 9 Sep 2009, Eric Dumazet wrote:
> 
>> Christoph Lameter a ?crit :
>>> On Wed, 9 Sep 2009, Eric Dumazet wrote:
>>>
>>>> In order to reproduce this here, could you tell me if you use
>>>>
>>>> Producer linux-2.6.22 -> Receiver 2.6.22
>>>> Producer linux-2.6.31 -> Receiver 2.6.31
>>> I use the above setup.
>> Then frames are sent on wire but not received
>>
>> (they are received via  mc loop, internal stack magic)
> 
> We are talking about two machines running 2.6.22 or 2.6.31. There is no
> magic mc loop between the two machines. -L was not used.
> 


I have no idea how you run the test then, and how are computed time deltas.

Are you clocks synchronized to less than one us ? How is it done ?

  parent reply	other threads:[~2009-09-09 17:08 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-09-08 22:38 UDP regression with packets rates < 10k per sec Christoph Lameter
2009-09-08 22:52 ` Eric Dumazet
2009-09-09 14:01   ` Christoph Lameter
2009-09-09 15:09     ` Eric Dumazet
2009-09-09 16:47       ` Christoph Lameter
2009-09-09 17:06         ` Eric Dumazet
2009-09-09 17:55           ` Christoph Lameter
2009-09-10 20:37             ` Eric Dumazet
2009-09-10 21:36               ` Christoph Lameter
2009-09-10 21:37               ` Eric Dumazet
2009-09-10 21:42                 ` Christoph Lameter
2009-09-14 21:10                   ` Christoph Lameter
2009-09-15  5:29                     ` Eric Dumazet
2009-09-15 14:07                       ` Christoph Lameter
2009-09-15 17:26                         ` Eric Dumazet
2009-09-15 20:25                           ` Christoph Lameter
2009-09-15 19:02                             ` Eric Dumazet
2009-09-25 14:19                             ` Eric Dumazet
2009-09-26 16:13                               ` Christoph Lameter
2009-09-10 21:39               ` Christoph Lameter
2009-09-09 17:08         ` Eric Dumazet [this message]
2009-09-09 17:26           ` Christoph Lameter

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