From: Jean-Michel Hautbois <jhautbois@gmail.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: Difficulties to get 1Gbps on be2net ethernet card
Date: Wed, 30 May 2012 08:51:53 +0200 [thread overview]
Message-ID: <CAL8zT=h2hoTWDMpTe8P-xfm-USXD6spx8fFVmm1UXyOfuuqhZw@mail.gmail.com> (raw)
In-Reply-To: <1338360536.2760.85.camel@edumazet-glaptop>
2012/5/30 Eric Dumazet <eric.dumazet@gmail.com>:
> On Wed, 2012-05-30 at 08:28 +0200, Jean-Michel Hautbois wrote:
>
>> If this can help, setting tx queue length to 5000 seems to make the
>> problem disappear.
>
> Then you should have drops at Qdisc layer (before your change to 5000)
>
> tc -s -d qdisc
>
>> I didn't specified it : MTU is 4096, UDP packets are 4000 bytes.
>
Yes :
qdisc mq 0: dev eth1 root
Sent 5710049154383 bytes 1413544639 pkt (dropped 73078, overlimits 0
requeues 281540)
backlog 0b 0p requeues 281540
Why ? With a 2.6.26 kernel it works well with a tx queue length of 1000.
next prev parent reply other threads:[~2012-05-30 6:52 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-29 14:46 Difficulties to get 1Gbps on be2net ethernet card Jean-Michel Hautbois
2012-05-30 6:28 ` Jean-Michel Hautbois
2012-05-30 6:48 ` Eric Dumazet
2012-05-30 6:51 ` Jean-Michel Hautbois [this message]
2012-05-30 7:06 ` Eric Dumazet
2012-05-30 7:25 ` Jean-Michel Hautbois
2012-05-30 9:40 ` Jean-Michel Hautbois
2012-05-30 9:56 ` Eric Dumazet
2012-05-30 10:06 ` Jean-Michel Hautbois
2012-05-30 10:04 ` Sathya.Perla
2012-05-30 10:07 ` Jean-Michel Hautbois
2012-06-06 10:04 ` Jean-Michel Hautbois
2012-06-06 11:01 ` Eric Dumazet
2012-06-06 12:34 ` Jean-Michel Hautbois
2012-06-06 13:07 ` Jean-Michel Hautbois
2012-06-06 14:36 ` Jean-Michel Hautbois
2012-06-07 12:27 ` Jean-Michel Hautbois
2012-06-07 12:31 ` Eric Dumazet
2012-06-07 12:54 ` Jean-Michel Hautbois
2012-06-08 6:08 ` Eric Dumazet
2012-06-08 8:14 ` Jean-Michel Hautbois
2012-06-08 8:22 ` Eric Dumazet
2012-06-08 14:53 ` Jean-Michel Hautbois
2012-06-12 8:24 ` Jean-Michel Hautbois
2012-06-12 8:55 ` Eric Dumazet
2012-06-12 9:01 ` Jean-Michel Hautbois
2012-06-12 9:06 ` Eric Dumazet
2012-06-12 9:10 ` Jean-Michel Hautbois
2012-05-30 10:30 ` Eric Dumazet
2012-05-30 11:10 ` Sathya.Perla
2012-05-31 6:54 ` Jean-Michel Hautbois
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