Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266458AbUFUUsk (ORCPT ); Mon, 21 Jun 2004 16:48:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266459AbUFUUsk (ORCPT ); Mon, 21 Jun 2004 16:48:40 -0400 Received: from outmx001.isp.belgacom.be ([195.238.3.51]:42975 "EHLO outmx001.isp.belgacom.be") by vger.kernel.org with ESMTP id S266458AbUFUUsi (ORCPT ); Mon, 21 Jun 2004 16:48:38 -0400 Subject: 2.6.7-mm1 I/O regression ? From: FabF To: linux-kernel@vger.kernel.org In-Reply-To: <20040620174632.74e08e09.akpm@osdl.org> References: <20040620174632.74e08e09.akpm@osdl.org> Content-Type: text/plain Message-Id: <1087859142.2331.30.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Tue, 22 Jun 2004 01:05:43 +0200 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1949 Lines: 61 Hi, I've got strange I/O regression from 2.6.7-mm1.Here's a small fgrep report : 2.6.7-mm1 (worst results ever seen) ----------------------------------- Grepping /usr/bin : 23% cpu - 86.16 RT Sec - 1.77 Sec in KM Entries scanned : 1569 90192 Kb analyzed this time 2.6.7-mm1 vm profile snippet ---------------------------- 61.9360 vmlinux poll_idle 0.8899 vmlinux mark_offset_tsc 0.8857 vmlinux __copy_to_user_ll 0.6136 vmlinux mask_and_ack_8259A 0.5605 vmlinux do_anonymous_page 0.3445 vmlinux unix_poll 0.3240 vmlinux __switch_to 0.2016 vmlinux enable_8259A_irq 0.1448 vmlinux do_select 0.1336 vmlinux get_exec_dcookie 0.1128 vmlinux fget 0.0959 vmlinux schedule 2.6.7 (best results ever seen) ------------------------------ Grepping /usr/bin : 48% cpu - 37.61 RT Sec - 1.46 Sec in KM Entries scanned : 1569 90184 Kb analyzed this time 2.6.7 vm Profile snippet ------------------------ 80.4850 vmlinux poll_idle 0.9149 vmlinux mark_offset_tsc 0.7879 vmlinux mask_and_ack_8259A 0.4552 vmlinux do_wp_page 0.3943 vmlinux do_anonymous_page 0.2559 vmlinux enable_8259A_irq 0.2464 vmlinux __copy_to_user_ll 0.1721 vmlinux unix_poll 0.1302 vmlinux irq_entries_start Well, profiles don't give a clue but fgrep RT delta is impressive.Did I missed something ? PS : Those tests were made on ext3 partition. Regards, FabF - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/