netdev - Re: [PATCH] Disable TSO for non standard qdiscs

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Message-ID: <47A212CB.1060403@hp.com>
Date:	Thu, 31 Jan 2008 10:26:19 -0800
From:	Rick Jones <rick.jones2@...com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	netdev@...r.kernel.org, davem@...emloft.net
Subject: Re: [PATCH] Disable TSO for non standard qdiscs

Andi Kleen wrote:
> TSO interacts badly with many queueing disciplines because they rely on 
> reordering packets from different streams and the large TSO packets can 
> make this difficult. This patch disables TSO for sockets that send over 
> devices with non standard queueing disciplines. That's anything but noop 
> or pfifo_fast and pfifo right now.

Does this also imply that JumboFrames interacts badly with these qdiscs? 
  Or IPoIB with its 65000ish byte MTU?

rick jones
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