From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: CPU utilization increased in 2.6.27rc Date: Wed, 13 Aug 2008 15:06:25 -0700 Message-ID: <20080813150625.30405c5f@extreme> References: <48A23137.2010107@myri.com> <20080812.181549.229367205.davem@davemloft.net> <48A30834.4090802@myri.com> <18595.15208.734736.864386@robur.slu.se> <20080813143459.1fb1c5c5@extreme> <18595.22699.600206.82767@robur.slu.se> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Robert Olsson , Andrew Gallatin , David Miller , netdev@vger.kernel.org To: Robert Olsson Return-path: Received: from mail.vyatta.com ([216.93.170.194]:58426 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752133AbYHMWG1 (ORCPT ); Wed, 13 Aug 2008 18:06:27 -0400 In-Reply-To: <18595.22699.600206.82767@robur.slu.se> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 13 Aug 2008 23:56:59 +0200 Robert Olsson wrote: > > Stephen Hemminger writes: > > > > I see you are still using the SLAB allocator. Does the SLUB change the numbers? > > Correct. I did try SLUB a couple month ago but got less performance > but there have been some SLUB patches since. Have you experimented? > > Cheers > --ro > > Not yet, but there was a movement to kill SLAB. If SLAB is still faster than Christoph probably wants to know (and fix the problem). The problem is that one way flows might still be moving memory between CPU's