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    SubjectRe: 2.6.0 performance problems


    On Tue, 30 Dec 2003, William Lee Irwin III wrote:

    > Okay, thus far we have some seriously performance-affecting debug
    > options. Could you turn those off and build non-modular?

    Done.

    report1.txt is the result of:
    opreport `bk export linux-2.5 linux-2.6-testb`

    report2.txt is the result of:
    opreport -l vmlinux


    The times for this operation is:
    real 15m20s
    user 0m35s
    sys 0m20s


    On my main system (1.3GHz Athlon, 512MB memory, fast hard drive; in other
    words has plenty of resources) I get similar results, scaled down of
    course.

    On 2.4 the times are
    real 3m47s
    user 14s
    sys 7s

    On 2.6 the times are
    real 3m27s
    user 14s
    sys 7s


    I also get 90+ percent iowait under 2.6 and 0 iowait in 2.4. I'm not sure
    how the alleged suckiness of 2.6 paging fits into this. On this system
    the execution times are almost the same. On this machine, in addition to
    the iowait differences, there are cpu use statistics as reported by top.
    On 2.4 idle time is 70 percent while on 2.6 the idle time is near zero
    percent. I'm not sure what the significance of this is.CPU: PIII, speed 648.072 MHz (estimated)
    Counted CPU_CLK_UNHALTED events (clocks processor is not halted) with a unit mask of 0x00 (No unit mask) count 324036
    91780 55.8442 vmlinux
    51219 31.1646 bk
    15294 9.3057 libc-2.3.2.so
    4674 2.8439 libperl.so
    618 0.3760 perl
    266 0.1618 oprofiled
    249 0.1515 bash
    119 0.0724 libpthread-0.60.so
    57 0.0347 sendmail.sendmail
    38 0.0231 ld-2.3.2.so
    22 0.0134 cupsd
    8 0.0049 init
    4 0.0024 syslogd
    1 6.1e-04 libdl-2.3.2.so
    1 6.1e-04 gpm
    CPU: PIII, speed 648.072 MHz (estimated)
    Counted CPU_CLK_UNHALTED events (clocks processor is not halted) with a unit mask of 0x00 (No unit mask) count 324036
    vma samples % symbol name
    c0115e20 22498 22.6776 mark_offset_tsc
    c0110080 12707 12.8084 mask_and_ack_8259A
    c018eec0 7115 7.1718 ext3_find_entry
    c010ff60 4013 4.0450 enable_8259A_irq
    c0168d50 2650 2.6712 __d_lookup
    c015eb10 1727 1.7408 link_path_walk
    c010afd0 1482 1.4938 irq_entries_start
    c027f730 1316 1.3265 ide_outb
    c0116920 1043 1.0513 apm_bios_call_simple
    c0187110 1006 1.0140 find_next_usable_block
    c0225740 718 0.7237 __copy_from_user_ll
    c0225200 693 0.6985 atomic_dec_and_lock
    c010b870 662 0.6673 apic_timer_interrupt
    c013d3a0 661 0.6663 kmem_cache_alloc
    c027f6c0 640 0.6451 ide_inb
    c0197a40 532 0.5362 ext3_permission
    c016a2e0 498 0.5020 find_inode_fast
    c0223390 466 0.4697 radix_tree_lookup
    c0198cf0 460 0.4637 do_get_write_access
    c01894d0 439 0.4425 ext3_new_inode
    c0143560 432 0.4354 do_anonymous_page
    c0127bf0 430 0.4334 run_timer_softirq
    c0155df0 428 0.4314 block_write_full_page
    c01184b0 398 0.4012 smp_apic_timer_interrupt
    c0225430 396 0.3992 strncpy_from_user
    c01237c0 391 0.3941 do_softirq
    c0154000 389 0.3921 __find_get_block
    c0154910 380 0.3830 __block_prepare_write
    c011be50 379 0.3820 schedule
    c0167c90 373 0.3760 dput
    c01a0180 366 0.3689 journal_add_journal_head
    c015ea60 361 0.3639 do_lookup
    c013d460 357 0.3599 kmem_cache_free
    c0152fa0 349 0.3518 __find_get_block_slow
    c019ad50 344 0.3467 journal_commit_transaction
    c010d480 339 0.3417 do_IRQ
    c011b9a0 327 0.3296 scheduler_tick
    c0144f00 302 0.3044 do_mmap_pgoff
    c018d430 302 0.3044 ext3_read_inode
    c010ae57 297 0.2994 sysenter_past_esp
    c01687b0 288 0.2903 d_alloc
    c0260290 267 0.2691 __make_request
    c02256c0 264 0.2661 __copy_to_user_ll
    c01375f0 264 0.2661 generic_file_aio_write_nolock
    c025ec00 248 0.2500 blk_rq_map_sg
    c013d1e0 246 0.2480 free_block
    c0127a60 246 0.2480 update_one_process
    c0135c60 243 0.2449 find_get_page
    c0168170 235 0.2369 prune_dcache
    c0171790 234 0.2359 do_mpage_readpage
    c019a800 231 0.2328 __journal_file_buffer
    c01238f0 229 0.2308 raise_softirq
    c01396a0 220 0.2218 __rmqueue
    c018aaa0 215 0.2167 ext3_get_block_handle
    c0139af0 212 0.2137 buffered_rmqueue
    c018d710 210 0.2117 ext3_do_update_inode
    c012df00 210 0.2117 supplemental_group_member
    c027ce90 208 0.2097 ide_do_request
    c010d120 206 0.2076 handle_IRQ_event
    c010af0a 206 0.2076 restore_all
    c0111210 201 0.2026 timer_interrupt
    c02a3780 191 0.1925 cfb_imageblit
    c0152880 190 0.1915 wake_up_buffer
    c010d250 186 0.1875 note_interrupt
    c0138970 185 0.1865 mempool_alloc
    c0153f00 183 0.1845 bh_lru_install
    c012bed0 181 0.1824 do_sigaction
    c0169940 180 0.1814 alloc_inode
    c013cfd0 180 0.1814 cache_alloc_refill
    c010ff00 178 0.1794 disable_8259A_irq
    c0199d20 175 0.1764 journal_stop
    c0109490 174 0.1754 __switch_to
    c010b850 172 0.1734 common_interrupt
    c015e5c0 166 0.1673 permission
    c02d75e0 162 0.1633 i8042_interrupt
    c018d050 161 0.1623 ext3_get_inode_block
    c0198400 161 0.1623 start_this_handle
    c018af50 158 0.1593 ext3_getblk
    c0199ff0 156 0.1572 __journal_unfile_buffer
    c0187790 156 0.1572 ext3_new_block
    c012c770 156 0.1572 notifier_call_chain
    c015e930 154 0.1552 follow_mount
    c02900d0 153 0.1542 ide_build_dmatable
    c0127970 150 0.1512 update_wall_time_one_tick
    c0156710 149 0.1502 bio_alloc
    c02a3120 149 0.1502 bitcpy_rev
    c0187ec0 149 0.1502 ext3_check_dir_entry
    c01456f0 149 0.1502 find_vma
    c018a3e0 147 0.1482 ext3_get_branch
    c0116bd0 146 0.1472 apm_cpu_idle
    c0127dc0 146 0.1472 do_timer
    c018fae0 144 0.1451 add_dirent_to_buf
    c0127a20 142 0.1431 update_wall_time
    c0116b20 141 0.1421 apm_do_idle
    c025f970 141 0.1421 get_request
    c015f5f0 141 0.1421 path_lookup
    c013fbc0 139 0.1401 shrink_cache
    c0199870 138 0.1391 journal_dirty_metadata
    c02a2dd0 137 0.1381 bitcpy
    c011a3a0 137 0.1381 do_page_fault
    c015b1b0 136 0.1371 cp_new_stat64
    c019c880 135 0.1361 __try_to_free_cp_buf
    c0127b80 135 0.1361 update_process_times
    c0260830 129 0.1300 generic_make_request
    c016ad60 126 0.1270 iput
    c0139250 124 0.1250 bad_range
    c0141f80 124 0.1250 zap_pte_range
    c0265580 122 0.1230 as_dispatch_request
    c0156a00 122 0.1230 bio_add_page
    c0170dd0 122 0.1230 sync_sb_inodes
    c0127370 121 0.1220 __mod_timer
    c0136bc0 121 0.1220 filemap_nopage
    c011b370 121 0.1220 recalc_task_prio
    c0143760 120 0.1210 do_no_page
    c018a290 120 0.1210 ext3_block_to_path
    c01874f0 120 0.1210 ext3_try_to_allocate
    c0139c60 116 0.1169 __alloc_pages
    c027f740 115 0.1159 ide_outbsync
    c015aa10 112 0.1129 generic_fillattr
    c01207f0 112 0.1129 profile_hook
    c010baa8 111 0.1119 page_fault
    c013b3e0 110 0.1109 __set_page_dirty_nobuffers
    c011b540 109 0.1099 try_to_wake_up
    c0153db0 108 0.1089 __brelse
    c0139640 108 0.1089 prep_new_page
    c0339700 107 0.1079 increment_tail
    c01272b0 107 0.1079 internal_add_timer
    c012df40 106 0.1068 in_group_p
    c0281250 104 0.1048 do_rw_taskfile
    c0147d00 104 0.1048 page_add_rmap
    c0135ab0 104 0.1048 unlock_page
    c01399c0 103 0.1038 free_hot_cold_page
    c027f780 102 0.1028 ide_outl
    c012c400 101 0.1018 sys_rt_sigaction
    c02658e0 99 0.0998 as_add_request
    c025e9e0 97 0.0978 blk_recount_segments
    c010feb0 97 0.0978 end_8259A_irq
    c018d160 96 0.0968 ext3_get_inode_loc
    c013fee0 96 0.0968 refill_inactive_zone
    c0150820 95 0.0958 get_unused_fd
    c013ea60 93 0.0937 __pagevec_lru_add
    c0225560 92 0.0927 __copy_user_intel
    c01a02d0 91 0.0917 __journal_remove_journal_head
    c0171b40 91 0.0917 mpage_readpages
    c0115da0 91 0.0917 sched_clock
    c0264b20 88 0.0887 as_update_iohist
    c016a040 88 0.0887 prune_icache
    c0145d50 87 0.0877 do_munmap
    c011d9d0 87 0.0877 prepare_to_wait
    c0265390 86 0.0867 as_move_to_dispatch
    c027d630 86 0.0867 ide_intr
    c018b280 85 0.0857 walk_page_buffers
    c015e3d0 84 0.0847 getname
    c011c4c0 82 0.0827 __wake_up
    c0169ae0 82 0.0827 inode_init_once
    c015fb10 81 0.0816 may_open
    c028feb0 80 0.0806 ide_build_sglist
    c011c3e0 80 0.0806 preempt_schedule
    c01709a0 79 0.0796 __mark_inode_dirty
    c01a04b0 78 0.0786 journal_put_journal_head
    c0135860 77 0.0776 add_to_page_cache
    c010ade1 77 0.0776 ret_from_intr
    c01540f0 76 0.0766 __getblk
    c0186aa0 76 0.0766 ext3_get_group_desc
    c01987f0 76 0.0766 journal_start
    c0223570 76 0.0766 radix_tree_delete
    c02239b0 76 0.0766 rb_erase
    c011c450 75 0.0756 __wake_up_common
    c0265c80 75 0.0756 as_queue_empty
    c027cbd0 74 0.0746 start_request
    c0264540 73 0.0736 as_choose_req
    c0260c70 72 0.0726 __end_that_request_first
    c019dd50 72 0.0726 journal_cancel_revoke
    c013e620 72 0.0726 mark_page_accessed
    c02a2630 71 0.0716 bitfill32
    c01560e0 71 0.0716 ll_rw_block
    c0287c00 70 0.0706 lba_28_rw_disk
    c013d960 70 0.0706 reap_timer_fnc
    c0143c00 69 0.0696 handle_mm_fault
    c01359b0 69 0.0696 page_waitqueue
    c0154520 68 0.0685 __block_write_full_page
    c019e630 68 0.0685 journal_write_metadata_buffer
    c025f4e0 67 0.0675 blk_run_queues
    c0138ad0 67 0.0675 mempool_free
    c01528b0 67 0.0675 unlock_buffer
    c018de90 66 0.0665 ext3_dirty_inode
    c02232d0 66 0.0665 radix_tree_insert
    c0339720 66 0.0665 sync_buffer
    c0170ae0 65 0.0655 __sync_single_inode
    c010d380 65 0.0655 enable_irq
    c027bee0 65 0.0655 ide_end_request
    c02807d0 65 0.0655 ide_execute_command
    c010dde0 64 0.0645 disable_irq_nosync
    c016a520 64 0.0645 get_new_inode_fast
    c0199680 64 0.0645 journal_dirty_data
    c013f660 64 0.0645 shrink_list
    c015aab0 64 0.0645 vfs_getattr
    c0151550 64 0.0645 vfs_write
    c0116100 63 0.0635 delay_tsc
    c0155f70 63 0.0635 submit_bh
    c02609c0 63 0.0635 submit_bio
    c0264e10 62 0.0625 as_completed_request
    c018de30 62 0.0625 ext3_mark_inode_dirty
    c0261230 62 0.0625 get_io_context
    c02233f0 61 0.0615 __lookup
    c013bd20 61 0.0615 do_page_cache_readahead
    c0264480 60 0.0605 as_add_arq_rb
    c0265890 60 0.0605 as_next_request
    c02664a0 60 0.0605 as_set_request
    c0139360 60 0.0605 free_pages_bulk
    c02649a0 59 0.0595 as_can_break_anticipation
    c01275f0 59 0.0595 del_timer
    c02823f0 59 0.0595 ide_handler_parser
    c013e820 59 0.0595 release_pages
    c015fa30 59 0.0595 vfs_create
    c0144c10 59 0.0595 vma_merge
    c02237f0 58 0.0585 __rb_erase_color
    c018b380 58 0.0585 ext3_prepare_write
    c01722e0 58 0.0585 mpage_writepages
    c025fee0 57 0.0575 disk_round_stats
    c015f8c0 56 0.0564 __user_walk
    c0234410 56 0.0564 add_timer_randomness
    c0265300 56 0.0564 as_fifo_expired
    c018f4f0 56 0.0564 ext3_lookup
    c018a8a0 56 0.0564 ext3_splice_branch
    c0225340 56 0.0564 memcpy
    c0142c50 55 0.0554 do_wp_page
    c025fe50 55 0.0554 drive_stat_acct
    c027fe90 55 0.0554 ide_wait_stat
    c0147dd0 55 0.0554 page_remove_rmap
    c0152450 54 0.0544 __fput
    c0264ff0 54 0.0544 as_remove_queued_request
    c018dd60 54 0.0544 ext3_reserve_inode_write
    c025f8b0 54 0.0544 freed_request
    c0290590 54 0.0544 ide_start_dma
    c0199550 54 0.0544 journal_get_undo_access
    c0199300 53 0.0534 journal_get_write_access
    c015e780 53 0.0534 real_lookup
    c013e570 52 0.0524 activate_page
    c0264370 52 0.0524 as_add_arq_hash
    c025d9d0 52 0.0524 elv_queue_empty
    c015fcd0 52 0.0524 open_namei
    c0223700 52 0.0524 rb_insert_color
    c013b9d0 52 0.0524 read_pages
    c0152ae0 51 0.0514 end_buffer_write_sync
    c018dca0 51 0.0514 ext3_writepage_trans_blocks
    c0145a70 51 0.0514 unmap_region
    c0142200 51 0.0514 unmap_vmas
    c012ede0 51 0.0514 worker_thread
    c0154400 50 0.0504 create_empty_buffers
    c0168980 50 0.0504 d_instantiate
    c01455b0 50 0.0504 get_unmapped_area
    c013ae30 49 0.0494 balance_dirty_pages_ratelimited
    c0135b90 48 0.0484 __lock_page
    c0265220 48 0.0484 as_remove_request
    c016b2e0 48 0.0484 inode_change_ok
    c0141a70 48 0.0484 pte_alloc_map
    c02231c0 48 0.0484 radix_tree_preload
    c016b200 48 0.0484 wake_up_inode
    c02345c0 47 0.0474 add_disk_randomness
    c0152860 47 0.0474 bh_waitq_head
    c0167c10 47 0.0474 d_callback
    c018b580 47 0.0474 ext3_ordered_commit_write
    c0145910 47 0.0474 free_pgtables
    c016a960 47 0.0474 iget_locked
    c0265cf0 46 0.0464 as_merge
    c01900e0 46 0.0464 ext3_add_entry
    c018db00 46 0.0464 ext3_setattr
    c0192910 45 0.0454 ext3_alloc_inode
    c01115c0 44 0.0444 sys_mmap2
    c0167c50 43 0.0433 d_free
    c015abb0 43 0.0433 vfs_lstat
    c021fe30 42 0.0423 cap_vm_enough_memory
    c0282350 42 0.0423 ide_pre_handler_parser
    c0144770 42 0.0423 remove_shared_vm_struct
    c01397c0 42 0.0423 rmqueue_bulk
    c0142180 42 0.0423 unmap_page_range
    c0265b90 41 0.0413 as_insert_request
    c0141620 41 0.0413 blk_queue_bounce
    c0135d30 41 0.0413 find_lock_page
    c0145760 41 0.0413 find_vma_prev
    c0152280 41 0.0413 get_empty_filp
    c016b650 41 0.0413 notify_change
    c0264500 40 0.0403 as_find_arq_rb
    c0192090 40 0.0403 ext3_journal_start
    c0282490 40 0.0403 ide_cmd_type_parser
    c01987a0 40 0.0403 new_handle
    c016a350 40 0.0403 new_inode
    c0148230 39 0.0393 __pte_chain_free
    c01570c0 39 0.0393 bio_endio
    c027fdb0 39 0.0393 drive_is_ready
    c018d3d0 39 0.0393 ext3_set_inode_flags
    c0287de0 39 0.0393 ide_do_rw_disk
    c01459b0 39 0.0393 unmap_vma
    c0152770 38 0.0383 __constant_c_and_count_memset
    c0287910 38 0.0383 __ide_do_rw_disk
    c01566b0 38 0.0383 bio_destructor
    c025f1f0 38 0.0383 blk_plug_device
    c0156280 38 0.0383 drop_buffers
    c011dad0 38 0.0383 finish_wait
    c016b460 38 0.0383 inode_setattr
    c0145f00 38 0.0383 sys_munmap
    c02907e0 37 0.0373 __ide_dma_begin
    c013eb60 37 0.0373 __pagevec_lru_add_active
    c0153a00 37 0.0373 create_buffers
    c0123740 37 0.0373 current_kernel_time
    c025d880 37 0.0373 elv_next_request
    c01448f0 37 0.0373 find_vma_prepare
    c0287a30 37 0.0373 get_command
    c028fe00 37 0.0373 ide_dma_intr
    c0223af0 37 0.0373 rb_next
    c0150340 37 0.0373 sys_chmod
    c02252d0 36 0.0363 __const_udelay
    c03398b0 36 0.0363 add_event_entry
    c02643c0 36 0.0363 as_find_arq_hash
    c011b320 36 0.0363 effective_prio
    c013a120 36 0.0363 nr_free_pages
    c0153420 35 0.0353 inode_has_buffers
    c019aca0 35 0.0353 journal_end_buffer_io_sync
    c018a5f0 34 0.0343 ext3_alloc_branch
    c015b3a0 34 0.0343 inode_add_bytes
    c0167220 34 0.0343 locks_remove_posix
    c025d7d0 33 0.0333 __elv_add_request
    c02908d0 33 0.0333 __ide_dma_test_irq
    c0264cf0 33 0.0333 as_update_arq
    c013cd40 33 0.0333 cache_grow
    c013b860 33 0.0333 file_ra_state_init
    c02cb2e0 33 0.0333 stall_callback
    c016ae80 33 0.0333 update_atime
    c0290640 32 0.0323 __ide_dma_read
    c01690a0 32 0.0323 d_rehash
    c0188ad0 32 0.0323 ext3_file_write
    c0150b10 32 0.0323 filp_close
    c016ae30 32 0.0323 inode_times_differ
    c016af60 32 0.0323 inode_update_time
    c01a00d0 32 0.0323 journal_alloc_journal_head
    c01482b0 32 0.0323 pte_chain_alloc
    c0192100 31 0.0312 __ext3_journal_stop
    c0290830 31 0.0312 __ide_dma_end
    c0151490 31 0.0312 do_sync_write
    c0153260 31 0.0312 end_buffer_async_write
    c0138240 31 0.0312 generic_file_aio_write
    c014ff40 31 0.0312 sys_access
    c025ff30 30 0.0302 __blk_put_request
    c0154d30 30 0.0302 __block_commit_write
    c02909b0 30 0.0302 __ide_dma_count
    c0145b50 30 0.0302 detach_vmas_to_be_unmapped
    c013d7e0 30 0.0302 drain_array
    c02a21e0 30 0.0302 soft_cursor
    c0150ba0 30 0.0302 sys_close
    c0156500 29 0.0292 alloc_buffer_head
    c025dcd0 29 0.0292 elv_try_last_merge
    c0150a10 29 0.0292 fd_install
    c0265110 28 0.0282 as_remove_dispatched_request
    c016c0e0 28 0.0282 dnotify_parent
    c027d230 28 0.0282 do_ide_request
    c0155f30 28 0.0282 end_bio_bh_io_sync
    c018a4d0 28 0.0282 ext3_find_near
    c0197c00 28 0.0282 ext3_init_acl
    c0188a20 28 0.0282 ext3_release_file
    c0150650 28 0.0282 filp_open
    c0339320 28 0.0282 get_exec_dcookie
    c0138b90 28 0.0282 mempool_alloc_slab
    c018b1d0 27 0.0272 ext3_bread
    c0135ed0 27 0.0272 find_get_pages
    c0261140 27 0.0272 put_io_context
    c016b5f0 27 0.0272 setattr_mask
    c029d860 27 0.0272 sys_outbuf
    c016aa20 26 0.0262 __insert_inode_hash
    c0153620 26 0.0262 __set_page_dirty_buffers
    c0264670 26 0.0262 as_find_next_arq
    c0260ec0 26 0.0262 end_that_request_last
    c010b8d8 26 0.0262 error_code
    c01a0290 26 0.0262 journal_grab_journal_head
    c025ed60 26 0.0262 ll_back_merge_fn
    c0171540 26 0.0262 mpage_end_io_read
    c012fb50 26 0.0262 rcu_do_batch
    c0127db0 26 0.0262 run_local_timers
    c0153c60 25 0.0252 __getblk_slow
    c01568e0 25 0.0252 bio_put
    c0169c80 25 0.0252 clear_inode
    c018a560 25 0.0252 ext3_find_goal
    c018b920 25 0.0252 ext3_ordered_writepage
    c0128ea0 25 0.0252 rm_from_queue
    c0144a40 25 0.0252 vma_link
    c02648e0 24 0.0242 as_close_req
    c025f370 24 0.0242 generic_unplug_device
    c015e6b0 24 0.0242 path_release
    c011d960 24 0.0242 remove_wait_queue
    c0280fa0 23 0.0232 SELECT_DRIVE
    c013d3e0 23 0.0232 __kmalloc
    c011d8a0 23 0.0232 add_wait_queue
    c02647d0 23 0.0232 as_antic_stop
    c0135b10 23 0.0232 end_page_writeback
    c0192a80 23 0.0232 ext3_clear_inode
    c018ae00 23 0.0232 ext3_get_block
    c018dd20 23 0.0232 ext3_mark_iloc_dirty
    c0137210 23 0.0232 generic_file_mmap
    c013e720 23 0.0232 lru_add_drain
    c0153d60 23 0.0232 mark_buffer_dirty
    c0147c50 23 0.0232 page_referenced
    c012ec00 23 0.0232 queue_work
    c0145a40 23 0.0232 unmap_vma_list
    c019e930 22 0.0222 __log_space_left
    c013cc90 22 0.0222 cache_init_objs
    c012fb20 22 0.0222 call_rcu
    c014cb10 22 0.0222 free_page_and_swap_cache
    c02234d0 22 0.0222 radix_tree_gang_lookup
    c01516f0 22 0.0222 sys_write
    c02c7610 22 0.0222 uhci_hub_status_data
    c0142110 22 0.0222 zap_pmd_range
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    c01506c0 21 0.0212 dentry_open
    c0167340 21 0.0212 locks_remove_flock
    c029d8a0 21 0.0212 move_buf_aligned
    c0186b60 21 0.0212 read_block_bitmap
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    c02b6fa0 21 0.0212 rh_report_status
    c015b320 21 0.0212 sys_lstat64
    c0163d00 21 0.0212 sys_select
    c0266430 20 0.0202 as_put_request
    c025f2c0 20 0.0202 blk_remove_plug
    c01893d0 20 0.0202 find_group_other
    c011d2f0 20 0.0202 io_schedule
    c0138bb0 20 0.0202 mempool_free_slab
    c0154260 20 0.0202 set_bh_page
    c0225260 19 0.0192 __delay
    c011db50 19 0.0192 autoremove_wake_function
    c0168cf0 19 0.0192 d_lookup
    c0197da0 19 0.0192 ext3_acl_chmod
    c0190a60 19 0.0192 ext3_create
    c0339390 19 0.0192 lookup_dcookie
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    c0264320 18 0.0181 as_remove_merge_hints
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    c025dd60 18 0.0181 clear_queue_congested
    c0152550 18 0.0181 fget_light
    c0152620 18 0.0181 file_move
    c0152430 18 0.0181 fput
    c0153b20 18 0.0181 grow_dev_page
    c0150a50 18 0.0181 sys_open
    c013b520 18 0.0181 test_clear_page_dirty
    c01541b0 17 0.0171 __bread
    c01354f0 17 0.0171 __remove_from_page_cache
    c025da50 17 0.0171 elv_set_request
    c018a250 17 0.0171 ext3_alloc_block
    c0152510 17 0.0171 fget
    c019ff70 17 0.0171 journal_blocks_per_page
    c015f810 17 0.0171 lookup_hash
    c0171660 17 0.0171 mpage_alloc
    c0160ae0 17 0.0171 sys_unlink
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    c0152900 16 0.0161 __wait_on_buffer
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    c0157440 16 0.0161 bio_phys_segments
    c016bdd0 16 0.0161 dnotify_flush
    c013d8b0 16 0.0161 drain_array_locked
    c025d6e0 16 0.0161 elv_merge
    c0155590 16 0.0161 generic_commit_write
    c02cb480 16 0.0161 init_stall_timer
    c013f120 16 0.0161 invalidate_mapping_pages
    c0261120 16 0.0161 kblockd_schedule_work
    c0127580 16 0.0161 mod_timer
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    c025daf0 15 0.0151 elv_completed_request
    c01909e0 15 0.0151 ext3_add_nondir
    c018bd90 15 0.0151 ext3_releasepage
    c018c060 15 0.0151 ext3_set_aops
    c02cbb70 15 0.0151 hc_state_transitions
    c016b090 15 0.0151 i_waitq_head
    c0223260 15 0.0151 radix_tree_extend
    c02236c0 14 0.0141 __rb_rotate_right
    c0155510 14 0.0141 block_prepare_write
    c01639f0 14 0.0141 do_select
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    c013e6c0 14 0.0141 lru_cache_add_active
    c0290710 13 0.0131 __ide_dma_write
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    c02663c0 13 0.0131 as_work_handler
    c0144b60 13 0.0131 can_vma_merge_before
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    c0191340 13 0.0131 ext3_orphan_del
    c0135e00 13 0.0131 find_or_create_page
    c0156560 13 0.0131 free_buffer_head
    c0139ad0 13 0.0131 free_hot_page
    c0122080 13 0.0131 next_thread
    c010adfc 13 0.0131 resume_userspace
    c0160950 13 0.0131 vfs_unlink
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    c0188a90 12 0.0121 ext3_open_file
    c018bd20 12 0.0121 ext3_readpages
    c019aab0 12 0.0121 journal_file_buffer
    c01806a0 12 0.0121 proc_lookup
    c01564c0 12 0.0121 recalc_bh_state
    c0169c20 11 0.0111 __iget
    c03395a0 11 0.0111 add_us_sample
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    c015e6f0 11 0.0111 cached_lookup
    c018b490 11 0.0111 ext3_journal_dirty_data
    c029da30 11 0.0111 fb_get_buffer_offset
    c016abe0 11 0.0111 generic_forget_inode
    c013d4b0 11 0.0111 kfree
    c01637d0 11 0.0111 poll_freewait
    c0188c10 11 0.0111 read_inode_bitmap
    c0156360 11 0.0111 try_to_free_buffers
    c0281030 10 0.0101 SELECT_MASK
    c0223680 10 0.0101 __rb_rotate_left
    c0339610 10 0.0101 add_sample
    c0127680 10 0.0101 cascade
    c0156220 10 0.0101 check_ttfb_buffer
    c025d990 10 0.0101 elv_remove_request
    c0152ab0 10 0.0101 end_buffer_read_sync
    c0299200 10 0.0101 fb_flashcursor
    c02d78a0 10 0.0101 i8042_timer_func
    c0223b50 10 0.0101 rb_prev
    c013c3b0 10 0.0101 slab_destroy
    c01544b0 10 0.0101 unmap_underlying_metadata
    c0141c10 9 0.0091 copy_page_range
    c01890f0 9 0.0091 find_group_orlov
    c019dec0 9 0.0091 journal_write_revoke_records
    c0223160 9 0.0091 radix_tree_node_alloc
    c0223670 9 0.0091 radix_tree_node_ctor
    c033c7b0 9 0.0091 sock_poll
    c0339670 9 0.0091 take_tasks_mm
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    c02642d0 8 0.0081 as_get_io_context
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    c018a0f0 8 0.0081 ext3_put_inode
    c018ee90 8 0.0081 ext3_update_dx_flag
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    c0135960 7 0.0071 add_to_page_cache_lru
    c0169d40 7 0.0071 dispose_list
    c025d710 7 0.0071 elv_merged_request
    c025da90 7 0.0071 elv_put_request
    c01a0160 7 0.0071 journal_free_journal_head
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    c0171030 7 0.0071 writeback_inodes
    c013e9d0 6 0.0060 __pagevec_release_nonlru
    c0157470 6 0.0060 bio_hw_segments
    c0286a90 6 0.0060 default_end_request
    c0136040 6 0.0060 do_generic_mapping_read
    c013b200 6 0.0060 do_writepages
    c018b850 6 0.0060 ext3_bmap
    c01638f0 6 0.0060 max_select_fd
    c0119f60 6 0.0060 pte_alloc_one
    c0127f80 6 0.0060 schedule_timeout
    c012f3d0 6 0.0060 schedule_work
    c015b360 6 0.0060 sys_fstat64
    c0122e10 6 0.0060 sys_time
    c035fec0 6 0.0060 tcp_poll
    c015f730 5 0.0050 __lookup_hash
    c013e780 5 0.0050 __page_cache_release
    c0123960 5 0.0050 __tasklet_schedule
    c0339570 5 0.0050 add_sample_entry
    c0264700 5 0.0050 as_antic_expired
    c0158d10 5 0.0050 blkdev_writepage
    c0350460 5 0.0050 dev_watchdog
    c019d6e0 5 0.0050 find_revoke_record
    c03396b0 5 0.0050 get_slots
    c0290270 5 0.0050 ide_destroy_dmatable
    c0153ab0 5 0.0050 init_page_buffers
    c013e660 5 0.0050 lru_cache_add
    c023bee0 5 0.0050 read_chan
    c0153970 5 0.0050 remove_inode_buffers
    c0111f00 5 0.0050 restore_fpu
    c0339800 5 0.0050 sync_cpu_buffers
    c0160430 5 0.0050 vfs_mkdir
    c0151360 5 0.0050 vfs_read
    c013a060 4 0.0040 __pagevec_free
    c0144960 4 0.0040 __vma_link_rb
    c0339470 4 0.0040 add_kernel_ctx_switch
    c0140720 4 0.0040 balance_pgdat
    c016adf0 4 0.0040 bmap
    c01173c0 4 0.0040 check_events
    c0299250 4 0.0040 cursor_timer_handler
    c01512a0 4 0.0040 do_sync_read
    c0155ef0 4 0.0040 generic_block_bmap
    c015e610 4 0.0040 get_write_access
    c0156640 4 0.0040 init_buffer
    c01565d0 4 0.0040 init_buffer_head
    c013edd0 4 0.0040 invalidate_complete_page
    c01a0470 4 0.0040 journal_remove_journal_head
    c019a2e0 4 0.0040 journal_try_to_free_buffers
    c013bea0 4 0.0040 page_cache_readahead
    c0170a90 4 0.0040 write_inode
    c01714f0 4 0.0040 writeback_in_progress
    c0152a20 3 0.0030 __clear_page_buffers
    c0136530 3 0.0030 __generic_file_aio_read
    c0139fa0 3 0.0030 __get_free_pages
    c0339430 3 0.0030 add_cpu_switch
    c0264850 3 0.0030 as_antic_timeout
    c0265cd0 3 0.0030 as_latter_request
    c01419c0 3 0.0030 clear_page_tables
    c0169a80 3 0.0030 destroy_inode
    c0190bd0 3 0.0030 ext3_mkdir
    c018dac0 3 0.0030 ext3_write_inode
    c0279480 3 0.0030 hermes_bap_pread
    c0192990 3 0.0030 init_once
    c02d0690 3 0.0030 input_event
    c01538f0 3 0.0030 invalidate_inode_buffers
    c019de50 3 0.0030 journal_switch_revoke_table
    c0171620 3 0.0030 mpage_bio_submit
    c013b760 3 0.0030 pdflush_operation
    c0127f70 3 0.0030 process_timeout
    c013f440 3 0.0030 shrink_slab
    c0339870 3 0.0030 timer_ping
    c016a3d0 3 0.0030 unlock_new_inode
    c011b6f0 3 0.0030 wake_up_forked_process
    c013a090 2 0.0020 __free_pages
    c019ff90 2 0.0020 __jbd_kmalloc
    c019ab10 2 0.0020 __journal_refile_buffer
    c019d0e0 2 0.0020 __journal_remove_checkpoint
    c019a210 2 0.0020 __journal_try_to_free_buffer
    c0273bc0 2 0.0020 __orinoco_ev_info
    c0163820 2 0.0020 __pollwait
    c0339530 2 0.0020 add_cookie_switch
    c0116830 2 0.0020 apm_bios_call
    c01175d0 2 0.0020 apm_event_handler
    c0116a40 2 0.0020 apm_get_event
    c0264730 2 0.0020 as_antic_waitnext
    c0260050 2 0.0020 blk_congestion_wait
    c018b8f0 2 0.0020 bput_one
    c01794b0 2 0.0020 create_elf_tables
    c03421c0 2 0.0020 datagram_poll
    c0246930 2 0.0020 do_con_trol
    c0192960 2 0.0020 ext3_destroy_inode
    c0136430 2 0.0020 file_read_actor
    c013a0e0 2 0.0020 free_pages
    c016aad0 2 0.0020 generic_delete_inode
    c016ad40 2 0.0020 generic_drop_inode
    c0150e10 2 0.0020 generic_file_llseek
    c013a2f0 2 0.0020 get_page_state
    c0279230 2 0.0020 hermes_bap_seek
    c011cbc0 2 0.0020 idle_cpu
    c016b870 2 0.0020 is_bad_inode
    c019ec70 2 0.0020 journal_bmap
    c018b900 2 0.0020 journal_dirty_data_fn
    c019a1c0 2 0.0020 journal_unfile_buffer
    c0243900 2 0.0020 kbd_keycode
    c013cd00 2 0.0020 kmem_flagcheck
    c0140940 2 0.0020 kswapd
    c01600d0 2 0.0020 lookup_create
    c013ece0 2 0.0020 pagevec_lookup
    c01509d0 2 0.0020 put_unused_fd
    c0299520 2 0.0020 putcs_aligned
    c012fd60 2 0.0020 rcu_check_callbacks
    c012fc60 2 0.0020 rcu_process_callbacks
    c013e480 2 0.0020 rotate_reclaimable_page
    c01276f0 2 0.0020 second_overflow
    c012b430 2 0.0020 sys_rt_sigprocmask
    c0123a00 2 0.0020 tasklet_action
    c015ac10 2 0.0020 vfs_fstat
    c0224830 2 0.0020 vsnprintf
    c013afe0 2 0.0020 wb_kupdate
    c01714d0 2 0.0020 writeback_acquire
    c0234600 1 0.0010 SHATransform
    c0153e50 1 0.0010 __bread_slow
    c0169380 1 0.0010 __d_path
    c0137530 1 0.0010 __filemap_copy_from_user_iovec
    c0273e40 1 0.0010 __orinoco_ev_rx
    c013e990 1 0.0010 __pagevec_release
    c013b560 1 0.0010 __pdflush
    c0170d20 1 0.0010 __writeback_single_inode
    c0299820 1 0.0010 accel_putc
    c0120090 1 0.0010 acquire_console_sem
    c012f460 1 0.0010 alloc_pidmap
    c0117660 1 0.0010 apm_mainloop
    c0264780 1 0.0010 as_antic_waitreq
    c02600e0 1 0.0010 attempt_merge
    c013acf0 1 0.0010 balance_dirty_pages
    c018b8e0 1 0.0010 bget_one
    c0154dc0 1 0.0010 block_read_full_page
    c0156430 1 0.0010 block_sync_page
    c03b9660 1 0.0010 cache_clean
    c0169ff0 1 0.0010 can_unuse
    c0248540 1 0.0010 con_chars_in_buffer
    c0247ed0 1 0.0010 console_callback
    c0241b10 1 0.0010 conv_uni_to_pc
    c011e780 1 0.0010 copy_process
    c015b7d0 1 0.0010 copy_strings
    c01694c0 1 0.0010 d_path
    c012f820 1 0.0010 detach_pid
    c010b928 1 0.0010 device_not_available
    c0247770 1 0.0010 do_con_write
    c011f170 1 0.0010 do_fork
    c01228f0 1 0.0010 do_getitimer
    c010ad30 1 0.0010 do_notify_resume
    c0243f90 1 0.0010 do_update_region
    c025d9f0 1 0.0010 elv_latter_request
    c025dbe0 1 0.0010 elv_rq_merge_ok
    c016b910 1 0.0010 expand_fd_array
    c0187d30 1 0.0010 ext3_group_sparse
    c018ca40 1 0.0010 ext3_truncate
    c01635d0 1 0.0010 filldir64
    c0239440 1 0.0010 flush_to_ldisc
    c0117360 1 0.0010 get_event
    c010aad0 1 0.0010 handle_signal
    c011d310 1 0.0010 io_schedule_timeout
    c038ca70 1 0.0010 ip_ct_find_helper
    c0355c40 1 0.0010 ip_route_input
    c0199350 1 0.0010 journal_get_create_access
    c0242e10 1 0.0010 k_spec
    c0243be0 1 0.0010 kbd_event
    c019e240 1 0.0010 kjournald
    c025efc0 1 0.0010 ll_merge_requests_fn
    c0179cc0 1 0.0010 load_elf_binary
    c010cdd0 1 0.0010 math_state_restore
    c017bd40 1 0.0010 mb_cache_shrink_fn
    c02d2030 1 0.0010 mousedev_event
    c010ae1e 1 0.0010 need_resched
    c011b960 1 0.0010 nr_running
    c013a170 1 0.0010 nr_used_zone_pages
    c0111670 1 0.0010 old_mmap
    c023a430 1 0.0010 opost_block
    c015db00 1 0.0010 pipe_poll
    c0108f40 1 0.0010 prepare_to_copy
    c017d800 1 0.0010 proc_alloc_inode
    c01821f0 1 0.0010 proc_calc_metrics
    c0180100 1 0.0010 proc_file_read
    c017d990 1 0.0010 proc_get_inode
    c0128790 1 0.0010 recalc_sigpending
    c01200d0 1 0.0010 release_console_sem
    c0339650 1 0.0010 release_mm
    c0353160 1 0.0010 rt_hash_code
    c0223c80 1 0.0010 rwsem_wake
    c015bbc0 1 0.0010 setup_arg_pages
    c010a610 1 0.0010 setup_frame
    c016a240 1 0.0010 shrink_icache_memory
    c012b370 1 0.0010 sigprocmask
    c02244e0 1 0.0010 skip_atoi
    c0225510 1 0.0010 strnlen_user
    c02d6800 1 0.0010 synaptics_process_byte
    c0157bc0 1 0.0010 sync_supers
    c0169590 1 0.0010 sys_getcwd
    c01604f0 1 0.0010 sys_mkdir
    c0151680 1 0.0010 sys_read
    c0151cc0 1 0.0010 sys_writev
    c015ab50 1 0.0010 vfs_stat
    c023e1e0 1 0.0010 vt_ioctl
    c010af1d 1 0.0010 work_resched
    c023c760 1 0.0010 write_chan
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