Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750942AbVJGIE1 (ORCPT ); Fri, 7 Oct 2005 04:04:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750979AbVJGIE1 (ORCPT ); Fri, 7 Oct 2005 04:04:27 -0400 Received: from fmr16.intel.com ([192.55.52.70]:30658 "EHLO fmsfmr006.fm.intel.com") by vger.kernel.org with ESMTP id S1750942AbVJGIE0 convert rfc822-to-8bit (ORCPT ); Fri, 7 Oct 2005 04:04:26 -0400 X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 8BIT Subject: RE: [RFC] add sysfs to dynamically control blk request tag maintenance Date: Fri, 7 Oct 2005 01:04:19 -0700 Message-ID: X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [RFC] add sysfs to dynamically control blk request tag maintenance Thread-Index: AcXLEnc4sHzEg7JqRV6ujstS5D75TgAAEMcgAACL/mA= From: "Chen, Kenneth W" To: "Jens Axboe" Cc: X-OriginalArrivalTime: 07 Oct 2005 08:04:22.0576 (UTC) FILETIME=[BA07EB00:01C5CB15] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1326 Lines: 29 Crap .... (my silly mail client doesn't line up tab correctly) Repost the profile. Latest execution profile taken with 2.6.14-rc2 kernel with "industry standard transaction processing database workload". First column is clock ticks (a direct measure of time), 2nd column is instruction retired, and 3rd column is number of L3 misses occurred inside the function. Symbol Clktick Inst. Retired L3 Misses scsi_request_fn 8.12% 9.27% 11.18% Schedule 6.52% 4.93% 7.26% scsi_end_request 4.44% 3.59% 6.76% __blockdev_direct_IO 4.28% 4.38% 3.98% __make_request 3.59% 4.16% 3.47% __wake_up 2.46% 1.56% 3.33% dio_bio_end_io 2.14% 1.67% 3.18% aio_complete 2.05% 1.27% 3.56% kmem_cache_free 1.95% 1.70% 0.71% kmem_cache_alloc 1.45% 1.84% 0.45% put_page 1.42% 0.60% 1.27% follow_hugetlb_page 1.41% 0.75% 1.27% __generic_file_aio_read 1.37% 0.36% 1.68% - 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/