From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262406AbUHVAQw (ORCPT ); Sat, 21 Aug 2004 20:16:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262730AbUHVAQw (ORCPT ); Sat, 21 Aug 2004 20:16:52 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:5760 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S262406AbUHVAQu (ORCPT ); Sat, 21 Aug 2004 20:16:50 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8.1-P7 From: Lee Revell To: "K.R. Foley" Cc: Ingo Molnar , linux-kernel , Florian Schmidt In-Reply-To: <4127E386.5000701@cybsft.com> References: <1092628493.810.3.camel@krustophenia.net> <20040816040515.GA13665@elte.hu> <1092654819.5057.18.camel@localhost> <20040816113131.GA30527@elte.hu> <20040816120933.GA4211@elte.hu> <1092716644.876.1.camel@krustophenia.net> <20040817080512.GA1649@elte.hu> <20040819073247.GA1798@elte.hu> <20040820133031.GA13105@elte.hu> <20040820195540.GA31798@elte.hu> <20040821140501.GA4189@elte.hu> <1093125390.817.22.camel@krustophenia.net> <4127E386.5000701@cybsft.com> Content-Type: text/plain Message-Id: <1093133810.817.26.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Sat, 21 Aug 2004 20:16:50 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 2004-08-21 at 20:06, K.R. Foley wrote: > I just posted a similar trace of ~4141 usec from P6 here: > > http://www.cybsft.com/testresults/2.6.8.1-P6/latency-trace1.txt > This looks wrong: 00000003 0.008ms (+0.001ms): dummy_socket_sock_rcv_skb (tcp_v4_rcv) 00000004 0.008ms (+0.000ms): tcp_v4_do_rcv (tcp_v4_rcv) 00000004 0.009ms (+0.000ms): tcp_rcv_established (tcp_v4_do_rcv) 00010004 3.998ms (+3.989ms): do_IRQ (tcp_rcv_established) 00010005 3.999ms (+0.000ms): mask_and_ack_8259A (do_IRQ) 00010005 4.001ms (+0.002ms): generic_redirect_hardirq (do_IRQ) 00010004 4.002ms (+0.000ms): generic_handle_IRQ_event (do_IRQ) Probably a false positive, Ingo would know better. What kind of stress testing were you doing? Lee