From: "Pádraig Brady" <P@draigBrady.com>
To: linux-kernel@vger.kernel.org
Subject: Re: Dropping Packets in 2.6.17
Date: Thu, 22 Jun 2006 15:15:05 +0100 [thread overview]
Message-ID: <449AA5E9.7000705@draigBrady.com> (raw)
In-Reply-To: <e7e7s2$3qc$1@news.cistron.nl>
Miquel van Smoorenburg wrote:
> In article <449A9ADC.9070800@draigBrady.com>,
> Pádraig Brady <P@draigBrady.com> wrote:
>
>>Note there is a max interrupt rate of around 80K/s
>>on x86 at least (not sure about opteron), so make
>>sure you're using NAPI. /proc/interrupts will
>>show your interrupt rate.
>
>
> The e1000 driver has some more knobs you can turn. I have this
> in my /etc/modules file:
>
> e1000 RxAbsIntDelay=256,256 TxAbsIntDelay=256,256 TxDescriptors=1024,1024 RxDescriptors=1024,1024
Yep sorry I should have mentioned those.
I set the descriptors up to the max of 4096
(as the statistical calcs only needed 5ms timestamping accuracy).
I got a large gain also by modifying the e1000 driver to do skb recycling
Pádraig.
next prev parent reply other threads:[~2006-06-22 14:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-22 11:31 Dropping Packets in 2.6.17 Danial Thom
2006-06-22 11:55 ` Arjan van de Ven
2006-06-22 12:47 ` Danial Thom
2006-06-22 13:27 ` Pádraig Brady
2006-06-22 14:01 ` Miquel van Smoorenburg
2006-06-22 14:15 ` Pádraig Brady [this message]
2006-06-22 15:03 ` Danial Thom
2006-06-22 15:26 ` Pádraig Brady
2006-06-22 17:10 ` Danial Thom
[not found] <fa.zPWsMAz4l0d9j5Voaw6Pdkcf//M@ifi.uio.no>
[not found] ` <fa.Ze3oSnDYEMz3/ITqeLQ2m0GF5wk@ifi.uio.no>
2006-06-23 1:13 ` Robert Hancock
2006-06-23 7:31 ` Brian F. G. Bidulock
2006-06-23 19:48 ` Danial Thom
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