From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 21 Aug 2002 14:05:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 21 Aug 2002 14:05:53 -0400 Received: from e31.co.us.ibm.com ([32.97.110.129]:41682 "EHLO e31.co.us.ibm.com") by vger.kernel.org with ESMTP id ; Wed, 21 Aug 2002 14:05:53 -0400 Subject: Re: (RFC): SKB Initialization To: Benjamin LaHaise Cc: alan@lxorguk.ukuu.org.uk, Bill Hartner , davem@redhat.com, linux-kernel@vger.kernel.org, lse-tech@lists.sourceforge.net X-Mailer: Lotus Notes Release 5.0.7 March 21, 2001 Message-ID: From: "Mala Anand" Date: Wed, 21 Aug 2002 13:07:09 -0500 X-MIMETrack: Serialize by Router on D03NM123/03/M/IBM(Release 5.0.10 |March 22, 2002) at 08/21/2002 12:07:09 PM MIME-Version: 1.0 Content-type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >On Wed, Aug 21, 2002 at 11:59:44AM -0500, Mala Anand wrote: >> The patch reduces the numer of cylces by 25% >The data you are reporting is flawed: where are the average cycle >times spent in __kfree_skb with the patch? I measured the cycles for only the initialization code in alloc_skb and __kfree_skb. Since the init code is removed from __kfree_skb, no cycles are spent there. Regards, Mala Mala Anand IBM Linux Technology Center - Kernel Performance E-mail:manand@us.ibm.com http://www-124.ibm.comdeveloperworks/opensource/linuxperf http://www-124.ibm.com/developerworks/projects/linuxperf Phone:838-8088; Tie-line:678-8088