lkml.org 
[lkml]   [2006]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Dropping Packets in 2.6.17
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.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-06-22 16:19    [W:0.045 / U:0.488 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site