Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262843AbTIES2O (ORCPT ); Fri, 5 Sep 2003 14:28:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262857AbTIES2O (ORCPT ); Fri, 5 Sep 2003 14:28:14 -0400 Received: from fw.osdl.org ([65.172.181.6]:17379 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262843AbTIES2K (ORCPT ); Fri, 5 Sep 2003 14:28:10 -0400 Message-Id: <200309051828.h85IRxo16644@mail.osdl.org> Date: Fri, 5 Sep 2003 11:27:56 -0700 (PDT) From: markw@osdl.org Subject: OSDL DBT-2 AS vs. Deadline 2.6.0-test4-mm3 To: linux-kernel@vger.kernel.org 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 Content-Length: 3316 Lines: 67 With recent firmware upgrades to our controller cards in our STP system, I was finally able to make use of Mark Haverkamp's aacraid patch to avoid bounce buffers. I've broken out the data by host, since we see varying results between our system: AS Scheduler: host avg. notpm stddev samples -------- ---------- ------ ------- stp4-000 1273.13 66.91 6 stp4-001 1210.33 27.81 6 stp4-002 1217.33 10.03 6 stp4-003 1338.67 12.88 5 Deadline Scheduler: host avg. notpm stddev samples -------- ---------- ------ ------- stp4-000 1268.50 61.81 3 stp4-001 1232.67 11.15 3 stp4-002 1214.00 - 1 stp4-003 1348.00 30.04 3 Here's a profile comparison: METRICS OVER LAST 20 MINUTES: --------------- -------- ----- ---- -------- ----------------------------------- Kernel Elevator NOTPM CPU% Blocks/s URL --------------- -------- ----- ---- -------- ----------------------------------- 2.6.0-test4-mm3 as 1315 90.8 9983.1 http://khack.osdl.org/stp/278809/ 2.6.0-test4-mm3 deadline 1314 90.3 10036.0 http://khack.osdl.org/stp/278903/ FUNCTIONS SORTED BY LOAD: -- ------------------------- ------- ------------------------- ------- # as 2.6.0-test4-mm3 ticks deadline 2.6.0-test4-mm3 ticks -- ------------------------- ------- ------------------------- ------- 1 default_idle 5746007 default_idle 5764451 2 schedule 53609 schedule 52174 3 scsi_request_fn 29340 do_softirq 25905 4 __make_request 25949 scsi_request_fn 23549 5 do_softirq 25560 __make_request 20325 6 scsi_end_request 16524 try_to_wake_up 11723 7 try_to_wake_up 11939 scsi_end_request 11340 8 dio_bio_end_io 11253 dio_bio_end_io 10950 9 do_anonymous_page 8234 do_anonymous_page 8110 10 ipc_lock 7366 ipc_lock 6706 11 sys_semtimedop 5493 sys_semtimedop 5152 12 sysenter_past_esp 5080 sysenter_past_esp 5064 13 direct_io_worker 5065 direct_io_worker 4732 14 dio_await_one 4084 dio_await_one 3779 15 __copy_to_user_ll 3643 __mod_timer 3571 16 __mod_timer 3582 blk_run_queue 3521 17 blk_run_queue 3411 __copy_to_user_ll 3495 18 __might_sleep 3316 __might_sleep 3277 19 kmem_cache_alloc 3225 kmem_cache_alloc 3054 20 semctl_main 3072 semctl_main 3016 -- Mark Wong - - markw@osdl.org Open Source Development Lab Inc - A non-profit corporation 12725 SW Millikan Way - Suite 400 - Beaverton, OR 97005 (503) 626-2455 x 32 (office) (503) 626-2436 (fax) - 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/