I edited System.map to get rid of the $lcfu_done sorts of symbols within
the user-space copy routines. This load, again on a b180, is a bunch of
big file tree copies and syncs and removes mixed with some large file
creation via dd and syncs.
8443 total 0.0048
2500 lcopy_from_user 36.7647
945 lcopy_to_user 16.8750
403 memset 12.5938
273 cpu_idle 3.7917
215 ext3_do_update_inode 0.1701
151 scsi_dispatch_cmd 0.1560
132 journal_dirty_metadata 0.2115
129 do_get_write_access 0.0762
121 flush_user_icache_range_asm 3.3611
120 __make_request 0.0415
111 journal_get_write_access 0.6307
97 journal_cancel_revoke 0.3566
90 flush_user_dcache_range_asm 2.5000
88 ext3_get_inode_loc 0.1964
76 get_hash_table 0.4318
71 $$remU 0.2399
65 rmqueue 0.0710
65 $$divU 0.2257
58 __journal_file_buffer 0.0815
57 d_lookup 0.1484
55 kmem_cache_alloc 0.1741
55 journal_add_journal_head 0.1580
55 ext3_new_block 0.0238
54 link_path_walk 0.0213
54 kmem_cache_free 0.2700
52 __brelse 0.6500
48 clear_user_page_asm 0.4286
44 journal_unlock_journal_head 0.2619
44 ext3_dirty_inode 0.1746
43 generic_file_write 0.0219
43 ext3_check_dir_entry 0.1558
40 schedule 0.0422
40 __block_prepare_write 0.0450
38 start_this_handle 0.0748
37 journal_stop 0.0685
36 ext3_get_block_handle 0.0457
35 scsi_request_fn 0.0425
34 mark_page_accessed 0.3542
33 kfree 0.1618
32 nfs3_xdr_sattrargs 0.0116
32 __jbd_kmalloc 0.1600
32 $$mulU 0.0602
31 memscan 0.7045
30 ll_rw_block 0.0487
30 journal_start 0.1056
30 journal_commit_transaction 0.0065
29 memcmp 0.3625
29 ext3_mark_iloc_dirty 0.2339
29 ext3_find_entry 0.0374
29 do_generic_file_read 0.0229
28 __free_pages_ok 0.0262
27 kmalloc 0.0742
24 lstrncpy_from_user 0.3333
24 __insert_into_lru_list 0.1053
22 syscall_restore 0.0917
22 ext3_mark_inode_dirty 0.2500
22 buffer_insert_inode_queue 0.3235
22 __mark_inode_dirty 0.1341
21 __wake_up 0.0750
20 ext3_add_entry 0.0158
19 memcpy 0.5278
19 ext3_reserve_inode_write 0.0742
19 ext3_new_inode 0.0075
18 ext3_get_branch 0.0608
18 ext3_alloc_branch 0.0201
18 bread 0.1324
17 ext3_test_allocatable 0.2024
17 ext3_get_group_desc 0.0944
17 ext3_commit_write 0.0281
17 dput 0.0394
16 walk_page_buffers 0.0635
16 unlock_page 0.1143
16 try_to_free_buffers 0.0435
16 sys_write 0.0455
16 sys_read 0.0455
16 getblk 0.1429
16 __journal_unfile_buffer 0.0288
16 __free_pages 0.2105
15 path_init 0.0291
15 __refile_buffer 0.1250
15 __block_commit_write 0.0399
14 shrink_cache 0.0136
14 find_inode 0.0814
14 add_to_page_cache_unique 0.0673
13 fput 0.0332
12 reschedule_idle 0.0140
12 permission 0.1500
12 get_empty_filp 0.0361
12 generic_make_request 0.0273
12 fimanyloop 0.6000
12 __journal_remove_journal_head 0.0303
12 $$remI 0.0366
11 vfs_permission 0.0316
11 set_buffer_flushtime 0.3929
11 sd_init_command 0.0119
11 open_namei 0.0071
11 lru_cache_add 0.0550
11 ext3_splice_branch 0.0179
11 ext3_clear_blocks 0.0243
11 ext3_block_to_path 0.0404
11 __alloc_pages 0.0204
10 truncate_list_pages 0.0216
10 submit_bh 0.0532
10 journal_dirty_data 0.0198
10 ext3_prepare_write 0.0253
10 copy_user_page_asm 0.0658
10 add_page_to_hash_queue 0.0806
10 __remove_from_lru_list 0.0781
9 pipe_read 0.0138
9 fdsync 0.4500
9 ext3_writepage_trans_blocks 0.0592
9 ext3_getblk 0.0112
9 ext3_free_data 0.0186
9 create_buffers 0.0352
9 __find_lock_page_helper 0.0433
8 prune_icache 0.0233
8 journal_unmap_buffer 0.0127
8 journal_flushpage 0.0157
8 get_unused_buffer_head 0.0444
8 ext3_read_inode 0.0084
8 ext3_free_blocks 0.0043
8 __remove_inode_page 0.0541
7 unlock_buffer 0.0583
7 syscall_exit 0.2500
7 sd_find_queue 0.1250
7 prune_dcache 0.0152
7 log_space_left 0.2188
7 journal_get_undo_access 0.0194
7 intr_restore 0.0155
7 handle_interruption 0.0054
7 getname 0.0287
7 ext3_get_block 0.0372
7 ext3_forget 0.0233
7 block_read_full_page 0.0091
7 add_timer 0.0269
7 _switch_to_ret 0.0090
6 update_atime 0.0484
6 scsi_init_io_v 0.0205
6 purge_kernel_dcache_page 0.0600
6 generic_commit_write 0.0417
6 fget 0.0938
6 fcntl_dirnotify 0.0152
6 create_empty_buffers 0.0375
5 syscall_check_bh 0.3125
5 path_release 0.0595
5 page_cache_read 0.0171
5 nr_free_buffer_pages 0.0694
5 iput 0.0080
5 get_unused_fd 0.0114
5 get_new_inode 0.0094
5 ext3_orphan_del 0.0071
5 ext3_find_goal 0.0179
5 ext3_create 0.0142
5 d_alloc 0.0117
5 bcopy 0.1389
5 balance_dirty_state 0.0347
5 _switch_to 0.0463
5 __user_walk 0.0379
5 __down_read 0.0305
4 sys_utime 0.0130
4 sys_close 0.0244
4 pipe_write 0.0052
4 notify_change 0.0095
4 ncr_queue_command 0.0013
4 journal_try_to_free_buffers 0.0175
4 journal_alloc_journal_head 0.0244
4 generic_unplug_device 0.0588
4 filldir64 0.0116
4 ext3_bread 0.0270
4 dentry_open 0.0076
4 clear_inode 0.0172
4 cached_lookup 0.0323
4 add_wait_queue 0.0833
4 __wake_up_sync 0.0132
4 __put_unused_buffer_head 0.0263
4 __lru_cache_del 0.0286
4 __free_pte 0.0286
4 __find_lock_page 0.1429
4 Letext 0.0270
3 truncate_complete_page 0.0259
3 sys_open 0.0107
3 sys_fcntl 0.0268
3 put_filp 0.0288
3 lookup_hash 0.0132
3 locks_remove_posix 0.0079
3 journal_dirty_sync_data 0.0214
3 grow_buffers 0.0070
3 filemap_nopage 0.0044
3 file_read_actor 0.0234
3 ext3_truncate 0.0026
3 ext3_readdir 0.0026
3 ext3_free_inode 0.0022
3 ext3_file_write 0.0208
3 d_rehash 0.0187
3 _alloc_pages 0.0682
3 __up_read 0.0341
3 ___wait_on_page 0.0150
2 write_some_buffers 0.0060
2 vfs_readdir 0.0064
2 try_to_release_page 0.0139
2 sys_newstat 0.0125
2 sys_getdents64 0.0106
2 scsi_add_timer 0.0119
2 refile_buffer 0.0833
2 pipe_wait 0.0081
2 lookup_create 0.0109
2 locks_remove_flock 0.0161
2 kmem_cache_reap 0.0034
2 intr_do_resched 0.0556
2 inode_setattr 0.0075
2 inode_has_buffers 0.0455
2 inode_change_ok 0.0042
2 init_rwsem 0.1000
2 in_group_p 0.0385
2 grow_dev_page 0.0086
2 get_empty_inode 0.0116
2 generic_file_readahead 0.0048
2 generic_file_read 0.0060
2 ext3_unlink 0.0037
2 ext3_orphan_add 0.0030
2 ext3_alloc_block 0.0500
2 end_buffer_io_sync 0.0192
2 do_page_fault 0.0026
2 do_no_page 0.0044
2 do_journal_get_write_access 0.0147
2 dispose_list 0.0139
2 buffer_insert_inode_data_queue 0.0294
2 block_prepare_write 0.0217
2 bdget 0.0060
2 add_wait_queue_exclusive 0.0417
2 __run_task_queue 0.0143
1 zap_page_range 0.0011
1 wait_for_buffers 0.0038
1 vm_enough_memory 0.0063
1 unmap_underlying_metadata 0.0064
1 tty_poll 0.0049
1 tcp_write_xmit 0.0013
1 syscall_restore_rfi 0.0357
1 syscall_check_sig 0.0833
1 syscall_check_resched 0.1250
1 sys_rt_sigprocmask 0.0027
1 sys_lstat64 0.0063
1 sys_fstat64 0.0068
1 sync_unlocked_inodes 0.0023
1 sync_page_buffers 0.0029
1 swap_out 0.0006
1 skb_checksum 0.0017
1 sk_run_filter 0.0004
1 shrink_dcache_sb 0.0021
1 set_bh_page 0.0100
1 select_parent 0.0068
1 scsi_malloc 0.0046
1 refill_inactive 0.0021
1 real_lookup 0.0028
1 read_chan 0.0005
1 rb_erase 0.0033
1 number 0.0009
1 lookup_one_len 0.0086
1 load_inode_bitmap 0.0019
1 kswapd_can_sleep_pgdat 0.0179
1 journal_revoke 0.0021
1 journal_get_create_access 0.0016
1 journal_forget 0.0015
1 intr_return 0.0500
1 intr_check_sig 0.0833
1 iget4 0.0029
1 handle_mm_fault 0.0037
1 get_pid 0.0028
1 flush_kernel_icache_page 0.0100
1 flush_kernel_dcache_page 0.0100
1 fioneloop 0.1250
1 find_vma_prev 0.0119
1 find_or_create_page 0.0030
1 find_next_usable_block 0.0010
1 filp_open 0.0093
1 filp_close 0.0068
1 filemap_fdatasync 0.0035
1 ext3_setattr 0.0022
1 ext3_free_branches 0.0014
1 ext3_delete_inode 0.0028
1 ext3_block_truncate_page 0.0010
1 ext2_update_inode 0.0008
1 ext2_get_branch 0.0034
1 ext2_get_block 0.0008
1 empty_dir 0.0016
1 do_select 0.0017
1 do_munmap 0.0014
1 do_anonymous_page 0.0028
1 datagram_poll 0.0034
1 cp_new_stat64 0.0022
1 copy_strings 0.0047
1 copy_page_range 0.0018
1 block_truncate_page 0.0019
1 block_commit_write 0.0179
1 balance_dirty 0.0132
1 __wait_on_buffer 0.0037
1 __try_to_free_cp_buf 0.0100
1 __remove_inode_queue 0.0417
1 __journal_remove_checkpoint 0.0066
1 __down_write 0.0064
1 $$divI 0.0030