From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ondrej Zary Subject: Re: [git patches] IDE update Date: Tue, 05 Jul 2005 17:51:25 +0200 Message-ID: <42CAAC7D.2050604@rainbow-software.org> References: <200507042033.XAA19724@raad.intranet> <42C9C56D.7040701@tomt.net> <42CA5A84.1060005@rainbow-software.org> <20050705101414.GB18504@suse.de> <42CA5EAD.7070005@rainbow-software.org> <20050705104208.GA20620@suse.de> <42CA7EA9.1010409@rainbow-software.org> <1120567900.12942.8.camel@linux> <42CA84DB.2050506@rainbow-software.org> <1120569095.12942.11.camel@linux> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="=_tic-88309-1120571484-0001-2" Return-path: Received: from mailhub3.nextra.sk ([195.168.1.146]:13830 "EHLO mailhub3.nextra.sk") by vger.kernel.org with ESMTP id S261857AbVGENv2 (ORCPT ); Tue, 5 Jul 2005 09:51:28 -0400 In-Reply-To: <1120569095.12942.11.camel@linux> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Jens Axboe Cc: =?ISO-8859-1?Q?Andr=E9_Tomt?= , Al Boldi , 'Bartlomiej Zolnierkiewicz' , 'Linus Torvalds' , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org This is a MIME-formatted message. If you see this text it means that your E-mail software does not support MIME-formatted messages. --=_tic-88309-1120571484-0001-2 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 7bit Jens Axboe wrote: > On Tue, 2005-07-05 at 15:02 +0200, Ondrej Zary wrote: > >>>Ok, looks alright for both. Your machine is quite slow, perhaps that is >>>showing the slower performance. Can you try and make HZ 100 in 2.6 and >>>test again? 2.6.13-recent has it as a config option, otherwise edit >>>include/asm/param.h appropriately. >>> >> >>I forgot to write that my 2.6.12 kernel is already compiled with HZ 100 >>(it makes the system more responsive). >>I've just tried 2.6.8.1 with HZ 1000 and there is no difference in HDD >>performance comparing to 2.6.12. > > > OK, interesting. You could try and boot with profile=2 and do > > # readprofile -r > # dd if=/dev/hda of=/dev/null bs=128k > # readprofile > prof_output > > for each kernel and post it here, so we can see if anything sticks out. > Here are the profiles (used dd with count=4096) from 2.4.26 and 2.6.12 (nothing from 2.6.8.1 because I don't have the .map file anymore). -- Ondrej Zary --=_tic-88309-1120571484-0001-2 Content-Type: text/plain; name="profile2426.txt"; charset=iso-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="profile2426.txt" 448 default_idle 5.6000 4 __switch_to 0.0192 1 ret_from_sys_call 0.0588 3 handle_IRQ_event 0.0268 6 schedule 0.0072 8 __wake_up 0.0833 2 __constant_memcpy 0.0078 4 add_page_to_hash_queue 0.0625 2 __remove_inode_page 0.0156 6 add_to_page_cache_unique 0.0375 7 page_cache_read 0.0398 2 unlock_page 0.0179 7 generic_file_readahead 0.0168 11 do_generic_file_read 0.0101 1366 file_read_actor 8.5375 2 generic_file_read 0.0048 1 kmem_slab_destroy 0.0042 3 kmem_cache_grow 0.0057 2 kmem_cache_alloc 0.0625 28 kmem_cache_free 0.8750 2 kmem_cache_reap 0.0042 12 __kmem_cache_alloc 0.0536 4 lru_cache_add 0.0357 1 __lru_cache_del 0.0078 3 delta_nr_inactive_pages 0.0312 5 delta_nr_cache_pages 0.0521 17 shrink_cache 0.0180 1 refill_inactive 0.0031 16 __free_pages_ok 0.0200 20 rmqueue 0.0284 6 __alloc_pages 0.0091 1 __free_pages 0.0208 3 sys_read 0.0117 1 sys_write 0.0039 5 __remove_from_lru_list 0.0391 3 __remove_from_queues 0.0625 7 __put_unused_buffer_head 0.0729 3 get_unused_buffer_head 0.0234 24 set_bh_page 0.2143 32 create_buffers 0.1429 4 try_to_release_page 0.0500 4 create_empty_buffers 0.0417 24 block_read_full_page 0.0375 27 try_to_free_buffers 0.1055 10 max_block 0.0694 9 blkdev_get_block 0.1406 2 blkdev_direct_IO 0.0417 1 blkdev_readpage 0.0312 2 init_buffer_head 0.0312 25 __constant_c_and_count_memset 0.1736 2 write_profile 0.0417 114 __make_request 0.0642 27 generic_make_request 0.0844 25 submit_bh 0.0977 5 ide_inb 0.3125 7 ide_outb 0.4375 2 ide_outl 0.1250 1 ide_execute_command 0.0078 2 SELECT_DRIVE 0.0312 4 ide_start_request 0.0083 2 ide_do_request 0.0050 2 ide_get_queue 0.0312 4 ide_intr 0.0139 6 ide_dma_intr 0.0312 30 ide_build_sglist 0.0481 5 ide_build_dmatable 0.0120 1 __ide_dma_read 0.0042 1 __ide_dma_count 0.0312 3 __constant_c_and_count_memset 0.0208 67 idedisk_end_request 0.3490 2 __generic_copy_to_user 0.0312 0 *unknown* 2499 total 0.0013 --=_tic-88309-1120571484-0001-2 Content-Type: text/plain; name="profile2612.txt"; charset=iso-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="profile2612.txt" 1 cpu_idle 0.0104 1 system_call 0.0200 1 __wake_up 0.0125 1 copy_mm 0.0011 1 profile_hit 0.0156 2 write_profile 0.0312 1 current_fs_time 0.0104 1 timespec_trunc 0.0156 1 __wake_up_bit 0.0208 5 handle_IRQ_event 0.0521 12 add_to_page_cache 0.0833 1 page_waitqueue 0.0156 2 __lock_page 0.0125 16 find_get_page 0.2500 7 do_generic_mapping_read 0.0049 8 file_read_actor 0.0312 2 __generic_file_aio_read 0.0038 1 generic_file_read 0.0052 9 mempool_alloc 0.0331 2 mempool_alloc_slab 0.1250 3 bad_range 0.0375 21 free_hot_cold_page 0.0772 22 buffered_rmqueue 0.0458 5 zone_watermark_ok 0.0284 5 __alloc_pages 0.0053 1 __read_page_state 0.0625 6 __mod_page_state 0.3750 1 get_dirty_limits 0.0048 4 test_clear_page_dirty 0.0179 2 read_pages 0.0074 11 __do_page_cache_readahead 0.0312 2 blockable_page_cache_readahead 0.0125 1 page_cache_readahead 0.0030 20 kmem_cache_alloc 0.4167 8 kmem_cache_free 0.1667 1 release_pages 0.0025 1 __pagevec_lru_add 0.0039 2 shrink_slab 0.0054 1 pageout 0.0037 43 shrink_list 0.0401 6 shrink_cache 0.0080 1 refill_inactive_zone 0.0009 2 balance_pgdat 0.0024 2 blk_queue_bounce 0.0312 1 unmap_vmas 0.0018 3 page_referenced 0.0234 1 rw_verify_area 0.0078 1 vfs_read 0.0045 1 vfs_write 0.0045 1 __clear_page_buffers 0.0156 5 alloc_page_buffers 0.0347 2 try_to_release_page 0.0312 12 create_empty_buffers 0.0833 14 block_read_full_page 0.0219 4 submit_bh 0.0147 7 drop_buffers 0.0486 7 try_to_free_buffers 0.0486 1 block_sync_page 0.0156 2 recalc_bh_state 0.0312 2 alloc_buffer_head 0.0250 1 free_buffer_head 0.0125 8 bio_alloc_bioset 0.0179 2 bio_put 0.0417 3 max_block 0.0268 2 blkdev_get_block 0.0312 2 blkdev_readpage 0.1250 2 update_atime 0.0114 1 __mark_inode_dirty 0.0024 2 mb_cache_shrink_fn 0.0043 1 radix_tree_preload 0.0063 998 __copy_to_user_ll 15.5938 1216 acpi_processor_idle 2.0033 9 blk_rq_map_sg 0.0256 3 get_request 0.0043 72 __make_request 0.0616 8 generic_make_request 0.0179 3 submit_bio 0.0170 61 ide_end_request 0.4236 1 start_request 0.0020 5 ide_do_request 0.0060 2 ide_intr 0.0052 2 ide_inb 0.1250 5 ide_outb 0.3125 1 ide_execute_command 0.0063 3 ide_build_sglist 0.0208 2 ide_build_dmatable 0.0066 1 ide_do_rw_disk 0.0089 8 schedule 0.0053 0 *unknown* 2734 total 0.0013 --=_tic-88309-1120571484-0001-2--