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Re: 1.03Mpps on e1000

To: netdev@xxxxxxxxxxx
Subject: Re: 1.03Mpps on e1000
From: Ray Lehtiniemi <rayl@xxxxxxxx>
Date: Thu, 9 Dec 2004 16:25:50 -0700
In-reply-to: <41B8893B.5030407@xxxxxxxxxxxxxx>
References: <20041201213550.GF14470@xxxxxxxxxxxxxxxxx> <1101967983.4782.9.camel@xxxxxxxxxxxxxxxxxxxxx> <20041205145051.GA647@xxxxxxxxxxxxxxxxx> <Pine.LNX.4.58.0412051559350.29474@xxxxxxxxxxxxxx> <Pine.LNX.4.58.0412051638290.29474@xxxxxxxxxxxxxx> <20041208233617.GD8649@xxxxxxxx> <41B825A5.2000009@xxxxxxxxxxxxxx> <20041209161825.GA32454@xxxxxxxx> <20041209164820.GB32454@xxxxxxxx> <41B8893B.5030407@xxxxxxxxxxxxxx>
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hi all

my apologies if this gets received twice... i originally sent a copy
of this using mutt's 'bounce' function, but i don't think that's
what i wanted to do.....

this is a bug report re: martin e1000 patch. i'm seeing some lockups
under normal traffic loads that seem to go away if i revert the
patch.  details below..


On Thu, Dec 09, 2004 at 05:19:55PM +0000, P@xxxxxxxxxxxxxx wrote:
> Ray Lehtiniemi wrote:
> >On Thu, Dec 09, 2004 at 09:18:25AM -0700, Ray Lehtiniemi wrote:
> >
> >>it is worth noting that my box has become quite unstable since
> >>i started to use oprofile and pktgen together.  sshd stops responding,
> >>and the network seems to go down.  not sure what is happening there...
> >>this instability seems to be persisting across reboots, unfortunately...
> >
> >
> >
> >ok, it seems that this is related to martin's e1000 patch, and i
> >just hadn't noticed it before.  rolling back the 1.2 Mpps patch
> >seems to cure the problem.
> >
> >symptoms are a total freezeup of the e1000 interfaces. netstat
> >-an shows a tcp connection for my ssh login to the box, with about
> >53K in the send-Q.  /proc/net/tcp is empty, however....  i can
> >reproduce this at will by doing
> >
> > # objdump -d /lib/modules/2.6.10-rc3-mp-rayl/kernel/net/core/pktgen.ko
> >
> >on that machine with the e1000-patched kernel running.
> >
> >
> >if there's any diagnostic output i can generate that might tell
> >me what's going wrong, let me know and i'll try to generate it.
> can you send this to again to netdev.
> thanks.
> -- 
> Pádraig Brady -
> --

     Ray L   <rayl@xxxxxxxx>

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