netdev
[Top] [All Lists]

Re: ksoftirqd uses 99% CPU triggered by network traffic (maybe RLT-8139

To: Pasi Sjoholm <ptsjohol@xxxxxxxxx>
Subject: Re: ksoftirqd uses 99% CPU triggered by network traffic (maybe RLT-8139 related)
From: Francois Romieu <romieu@xxxxxxxxxxxxx>
Date: Sat, 31 Jul 2004 14:33:30 +0200
Cc: Robert Olsson <Robert.Olsson@xxxxxxxxxxx>, H?ctor Mart?n <hector@xxxxxxxxxxxxxx>, Linux-Kernel <linux-kernel@xxxxxxxxxxxxxxx>, akpm@xxxxxxxx, netdev@xxxxxxxxxxx, brad@xxxxxxxxxx, shemminger@xxxxxxxx
In-reply-to: <Pine.LNX.4.44.0407302116010.23238-101000@xxxxxxxxxxxxxxx>; from ptsjohol@xxxxxxxxx on Fri, Jul 30, 2004 at 09:40:28PM +0300
References: <16650.21955.869485.332365@xxxxxxxxxxxx> <Pine.LNX.4.44.0407302116010.23238-101000@xxxxxxxxxxxxxxx>
Sender: netdev-bounce@xxxxxxxxxxx
User-agent: Mutt/1.2.5.1i
Pasi Sjoholm <ptsjohol@xxxxxxxxx> :
[interesting report]
> The hardest part is to tell where the problem is but I think that 
> rtl8139_poll-function would be good place to start looking for the bug?
> 
> readprofile didn't tell much.. Where to go next? I'm not so good 
> programmer that I could find the right place to fix..

In case it could make a difference: did you check if CONFIG_8139_OLD_RX_RESET
changes the behavior or not ?

If it does not, I'd welcome a test report + log with the two attached patch
applied. The first one is just a placebo but the second one could help.

Btw, you are probably right that the issue is not related to ksoftirqd at all.

--
Ueimor

Attachment: r8139-10.patch
Description: Text document

Attachment: r8139-20.patch
Description: Text document

<Prev in Thread] Current Thread [Next in Thread>