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Re: 1.03Mpps on e1000

To: Ray Lehtiniemi <rayl@xxxxxxxx>
Subject: Re: 1.03Mpps on e1000
From: P@xxxxxxxxxxxxxx
Date: Thu, 09 Dec 2004 17:19:55 +0000
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References: <1101863399.4663.54.camel@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <20041201182943.GA14470@xxxxxxxxxxxxxxxxx> <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>
Resent-date: Thu, 9 Dec 2004 14:47:44 -0700
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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.


Pádraig Brady -

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