From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jean-Michel Hautbois <jhautbois@gmail.com>
Cc: netdev <netdev@vger.kernel.org>
Subject: Re: Difficulties to get 1Gbps on be2net ethernet card
Date: Wed, 30 May 2012 11:56:14 +0200 [thread overview]
Message-ID: <1338371774.2760.134.camel@edumazet-glaptop> (raw)
In-Reply-To: <CAL8zT=gJT1Frn_44SU0CrpZjPxwC_VuHFE4k9jvOGNmFomzhHA@mail.gmail.com>
On Wed, 2012-05-30 at 11:40 +0200, Jean-Michel Hautbois wrote:
> I used vmstat in order to see the differences between the two kernels.
> The main difference is the number of interrupts per second.
> I have an average of 87500 on 3.2 and 7500 on 2.6, 10 times lower !
> I suspect the be2net driver to be the main cause, and I checkes the
> /proc/interrupts file in order to be sure.
>
> I have for eth1-tx on 2.6.26 about 2200 interrupts per second and 23000 on 3.2.
> BTW, it is named eth1-q0 on 3.2 (and tx and rx are the same IRQ)
> whereas there is eth1-rx0 and eth1-tx on 2.6.26.
>
Might be different coalescing params :
ethtool -c eth1
next prev parent reply other threads:[~2012-05-30 9:56 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
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 [this message]
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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