Hi!

	There was a sugestion to change slab to slub alocation method... I =
don't know quite well yet what is necessary to do this, but it seems =
that the current implementation of slub is more commonly available on =
2.6 kernels, not in 2.4 that I use :(...
	Any guesses or hints on this?


Regards!
Filipe.

-----Original Message-----
From: ext Gerhard Pircher [mailto:gerhard_pircher@gmx.net]=20
Sent: quarta-feira, 30 de Abril de 2008 13:26
To: Franca, Jose (NSN - PT/Portugal - MiniMD); Scott Wood
Cc: linuxppc-embedded@ozlabs.org; linuxppc-dev@ozlabs.org
Subject: Re: FW: SKB corruption on heavy traffic

Hi,

I think I have the same problem here with all versions of the 2.6.x =
kernel
series (tested with kernel v2.6.8/14/16/18/25 on a PPC7455 machine with
different PCI network cards by transferring a big file over NFS/SCP). =
Data
corruption occurs under high load, but I don't get any kernel oops.

regards,

Gerhard

-------- Original-Nachricht --------

Datum: Wed, 30 Apr 2008 10:07:15 +0100
Von: "Franca, Jose (NSN - PT/Portugal - MiniMD)" [off-list ref]
An: linuxppc-dev@ozlabs.org, linuxppc-embedded@ozlabs.org
Betreff: FW: SKB corruption on heavy traffic

quoted

From our latest debugs we found that the problem occurs mainly on =

skbuff

code. After some variable time kfree or kalloc result in kernel oops.
=20
-----Original Message-----
From: Franca, Jose (NSN - PT/Portugal - MiniMD)=20
Sent: quarta-feira, 30 de Abril de 2008 9:44
To: 'ext Scott Wood'
Cc: =09
Subject: RE: SKB corruption on heavy traffic
=20
Hello!
=20
	Thank you for replying!
	It't quite dificult to say if the problem exists without our
changes, since the all software is dependent on this changes so to =

work

with the hardware. I can't answer to that right now on that, but I =

forgot=20

to add one thing: we have ring buffer full problems on our fcc_enet
driver from time to time. So, I think the problem could be on linux
configurations (related to hw) because there is a lot of posts on the =

web=20

related to problems similar to this (none of them has really solved =

the

bottom problem).=20
=20
Regards,
Filipe=20
=20
-----Original Message-----
From: ext Scott Wood [mailto:scottwood@freescale.com]=20
Sent: ter=E7a-feira, 29 de Abril de 2008 20:15
To: Franca, Jose (NSN - PT/Portugal - MiniMD)
Cc: linuxppc-dev@ozlabs.org; linuxppc-embedded@ozlabs.org
Subject: Re: SKB corruption on heavy traffic
=20
On Tue, Apr 29, 2008 at 07:39:07PM +0100, Franca, Jose (NSN - =

PT/Portugal

- MiniMD) wrote:

quoted

	We are developing a MPC8247 based telecom board (512MB), using
linux 2.4 with some proprietary changes on IP stack and we are =

facing

quoted

some problems when we have heavy traffic on our Ethernet =

interfaces...

=20
Do you see these problems without the proprietary changes, and with a
current kernel?
=20
-Scott

--=20
Psst! Geheimtipp: Online Games kostenlos spielen bei den GMX Free Games! =

http://games.entertainment.gmx.net/de/entertainment/games/free