From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ns2.suse.de ([195.135.220.15]:44397 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752801AbXDUUq1 (ORCPT ); Sat, 21 Apr 2007 16:46:27 -0400 From: Andi Kleen Subject: Re: larger per cpu data Date: Sat, 21 Apr 2007 22:46:23 +0200 References: <200704201246.17531.ak@suse.de> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200704212246.23397.ak@suse.de> Sender: linux-arch-owner@vger.kernel.org To: "Eric W. Biederman" Cc: tony.luck@intel.com, linux-arch@vger.kernel.org List-ID: On Saturday 21 April 2007 22:23:21 Eric W. Biederman wrote: > Andi Kleen writes: > > > Hi, > > > > I've been looking at optimizing the network per CPU statistics and the best way > > to > > do that would be to move them back to direct per CPU data. Currently they are > > allocated separately because there used to be some trouble on x86 (and ia64?) > > with limited per CPU areas. At least the x86 side has been fixed now. I heard > > there were some problems with ia64 have those been fixed too? > > Anybody would have a problem with increasing per CPU data in a standard kernel > > by a few KB? > > Andi which areas are you looking at modifying. I'm trying to get a feel > to see if your changes will have an effect on the network namespace work. Just the internal implementation of the statistics. Not very many changes outside those include files -Andi