From mboxrd@z Thu Jan 1 00:00:00 1970 From: "David S. Miller" Subject: Re: Tigon3 5701 PCI-X recv performance problem Date: Wed, 8 Oct 2003 13:24:02 -0700 Sender: netdev-bounce@oss.sgi.com Message-ID: <20031008132402.64984528.davem@redhat.com> References: <3F844578.40306@sgi.com> <20031008101046.376abc3b.davem@redhat.com> <3F8455BE.8080300@sgi.com> <20031008183742.GA24822@wotan.suse.de> <20031008122223.1ba5ac79.davem@redhat.com> <20031008202248.GA15611@oldwotan.suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: ak@suse.de, modica@sgi.com, johnip@sgi.com, netdev@oss.sgi.com, jgarzik@pobox.com, jes@sgi.com Return-path: To: Andi Kleen In-Reply-To: <20031008202248.GA15611@oldwotan.suse.de> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Wed, 8 Oct 2003 22:22:48 +0200 Andi Kleen wrote: > It's not that it's a new problem - we had this since the Alpha port > and it hasn't gotten more urgent suddenly. Frankly, I just want to shut all the ia64 users up because they keep barking due to the kernel unaligned trap message that port spits out. > Hmm - you mean it allocates a full page and does suballocation by itself? We could write some helper routines. > The suballocation would need to be per CPU to be SMP efficient I guess, > which would complicate it. Andi, stop right there, we're talking about mitigating the horrible performance some $6.00 USD Taiwaneese network cards get on expensive ia64 systems. How much effort do you think we should drain into optimizing this? :-)