I made the crude kernel profiler work and here's a trace from a b180
compiling the kernel sorted by #tics. 'man readprofile' to figure out
column 3. I'll commit this stuff soon. Enjoy!
22214 total 0.0125
4816 flush_user_icache_range_asm 133.7778
4641 flush_user_dcache_range_asm 128.9167
2672 clear_user_page_asm 23.8571
712 $lctu_done 44.5000
616 copy_user_page_asm 4.0526
542 handle_interruption 0.4208
486 $lctu_loop 40.5000
454 memset 14.1875
436 flush_kernel_icache_page 4.3600
431 rmqueue 0.4705
430 flush_kernel_dcache_page 4.3000
366 purge_kernel_dcache_page 3.6600
273 do_page_fault 0.3500
258 d_lookup 0.6719
194 fimanyloop 9.7000
193 find_vma_prev 2.2976
191 fdsync 9.5500
185 link_path_walk 0.0731
173 zap_page_range 0.1975
131 __free_pages_ok 0.1227
129 do_anonymous_page 0.3665
111 $lcfu_done 9.2500
109 intr_restore 0.2412
109 handle_mm_fault 0.4007
109 __down_read 0.6646
104 do_no_page 0.2281
104 copy_page_range 0.1884
102 lru_cache_add 0.5100
94 memcpy 2.6111
87 clear_page_tables 0.4439
86 syscall_restore 0.3583
85 __find_get_page 1.2500
85 $lcfu_loop 7.0833
79 mark_page_accessed 0.8229
78 memcmp 0.9750
77 filemap_nopage 0.1119
74 kmem_cache_alloc 0.2342
72 __free_pte 0.5143
70 pte_alloc 0.3889
69 kmem_cache_free 0.3450
58 __free_pages 0.7632
55 reschedule_idle 0.0640
54 fput 0.1378
53 do_generic_file_read 0.0418
52 do_wp_page 0.0553
51 __lru_cache_del 0.3643
50 __alloc_pages 0.0926
50 $lslen_loop 4.1667
49 update_mmu_cache 0.3500
43 do_brk 0.0741
42 dput 0.0972
39 set_page_dirty 0.2786
38 vm_enough_memory 0.2375
37 vfs_permission 0.1063
36 nr_free_pages 0.6000
36 fioneloop 4.5000
35 path_init 0.0678
34 exit_notify 0.0431
34 $lsfu_loop 2.1250
33 __up_read 0.3750
31 parisc_acctyp 0.1490
29 sys_brk 0.0993
29 permission 0.3625
29 _alloc_pages 0.6591
29 __down_write 0.1859
29 $lslen_done 3.6250
28 free_page_and_swap_cache 0.2800
26 syscall_exit 0.9286
25 memmove 0.3125
25 get_empty_filp 0.0753
24 sys_read 0.0682
23 open_namei 0.0148
23 getname 0.0943
22 find_vma 0.2500
22 cached_lookup 0.1774
20 __mark_inode_dirty 0.1220
20 $lclu_done 1.2500
19 get_unshared_area 0.1357
17 schedule 0.0179
16 memscan 0.3636
16 generic_file_read 0.0476
16 find_vma_prepare 0.1333
16 do_mmap_pgoff 0.0125
16 dentry_open 0.0303
15 intr_return 0.7500
15 get_unused_fd 0.0341
15 find_trylock_page 0.1136
15 fcntl_dirnotify 0.0379
14 unlock_page 0.1000
13 sys_open 0.0464
12 sys_close 0.0732
11 locks_remove_posix 0.0289
11 ext2_readdir 0.0174
11 cp_new_stat64 0.0246
11 copy_strings 0.0519
10 filp_close 0.0676
10 do_munmap 0.0135
10 do_fork 0.0048
10 $lsfu_done 2.5000
9 vma_merge 0.0288
9 syscall_check_bh 0.5625
9 filldir64 0.0262
9 fget 0.1406
9 ext2_release_file 0.2250
8 update_atime 0.0645
8 kfree 0.0392
8 Letext 0.2857
7 locks_remove_flock 0.0565
7 load_elf_binary 0.0027
7 intr_check_resched 0.5833
7 generic_file_write 0.0036
7 generic_file_readahead 0.0167
7 exit_mmap 0.0148
7 cp_new_stat 0.0192
7 copy_mm 0.0082
7 activate_page 0.0282
7 __user_walk 0.0530
6 recycle_sids 0.0517
6 put_filp 0.0577
6 intr_check_sig 0.5000
6 in_group_p 0.1154
6 create_elf_tables 0.0058
6 count 0.0600
6 __wake_up 0.0214
5 vsnprintf 0.0023
5 syscall_check_sig 0.4167
5 sys_newfstat 0.0338
5 supplemental_group_member 0.0833
5 rb_insert_color 0.0167
5 path_walk 0.1562
5 net_rx_action 0.0062
5 lstrncpy_from_user 0.1389
5 load_elf_interp 0.0069
5 get_unmapped_area 0.0312
5 filp_open 0.0463
5 file_read_actor 0.0391
5 do_mmap2 0.0236
5 __block_prepare_write 0.0056
5 $$remU 0.0169
4 sys_write 0.0114
4 sys_rt_sigprocmask 0.0108
4 sys_mmap 0.0667
4 scsi_dispatch_cmd 0.0041
4 proc_lookup 0.0192
4 number 0.0036
4 n_tty_receive_buf 0.0014
4 meminfo_read_proc 0.0052
4 lru_cache_del 0.1667
4 kmalloc 0.0110
4 ip_route_input 0.0085
4 ext2_new_block 0.0014
4 copy_string 0.0233
4 copy_files 0.0068
4 can_share_swap_page 0.0238
4 $lclu_loop 0.5000
3 syscall_restore_rfi 0.1071
3 syscall_check_resched 0.3750
3 sys_rt_sigaction 0.0142
3 sys_getdents64 0.0160
3 setup_rt_frame 0.0029
3 release_task 0.0073
3 put_files_struct 0.0097
3 path_release 0.0357
3 opost_block 0.0059
3 flush_old_exec 0.0039
3 flush_kernel_dcache_range_asm 0.0750
3 find_extend_vma 0.0117
3 ext2_follow_link 0.0750
3 do_signal 0.0027
3 do_exit 0.0046
3 change_protection 0.0043
3 block_prepare_write 0.0326
3 arch_get_unmapped_area 0.0250
3 $lsfu_exit 0.1875
2 vfs_follow_link 0.0037
2 tcp_poll 0.0052
2 tcp_clean_rtx_queue 0.0024
2 sys_stat64 0.0125
2 sys_select 0.0021
2 sys_munmap 0.0192
2 sys_mprotect 0.0035
2 sys_llseek 0.0079
2 sys_clone 0.0714
2 sock_poll 0.0357
2 read_chan 0.0011
2 read_cache_page 0.0040
2 pty_write 0.0047
2 pipe_read 0.0031
2 nfs3_xdr_sattrargs 0.0007
2 mod_timer 0.0083
2 mark_buffer_dirty 0.0185
2 lock_vma_mappings 0.5000
2 get_kmapped_page 0.0217
2 generic_file_open 0.0357
2 free_sid 0.0156
2 free_pgtables 0.0122
2 file_send_actor 0.0082
2 file_move 0.0455
2 ext2_update_inode 0.0016
2 ext2_new_inode 0.0017
2 ext2_get_group_desc 0.0111
2 ext2_get_block 0.0016
2 ext2_free_blocks 0.0019
2 ext2_find_entry 0.0055
2 do_sigaction 0.0068
2 do_select 0.0034
2 do_execve 0.0045
2 discard_bh_page 0.0098
2 dev_queue_xmit_nit 0.0083
2 build_mmap_rb 0.0161
2 block_read_full_page 0.0026
2 alloc_sid 0.0055
2 __rb_rotate_right 0.0250
2 __rb_erase_color 0.0044
2 __pollwait 0.0089
2 $$remI 0.0061
2 $$divU 0.0069
2 $$divI 0.0061
1 write_chan 0.0016
1 wrapper_exit 0.0109
1 vfs_unlink 0.0021
1 vfs_readdir 0.0032
1 unmap_fixup 0.0021
1 unlock_vma_mappings 0.2500
1 udp_rcv 0.0013
1 tty_write 0.0015
1 tty_poll 0.0049
1 tcp_sendmsg 0.0002
1 tcp_ack 0.0012
1 syscall_do_signal 0.0064
1 syscall_do_resched 0.0625
1 sys_wait4 0.0010
1 sys_ioctl 0.0017
1 sys_fstat64 0.0068
1 sys_dup2 0.0032
1 strncpy 0.0312
1 skb_clone 0.0022
1 sk_run_filter 0.0004
1 si_meminfo 0.0132
1 setup_sigcontext 0.0022
1 setup_arg_pages 0.0018
1 set_binfmt 0.0081
1 set_bh_page 0.0100
1 select_bits_free 0.0417
1 search_binary_handler 0.0025
1 scsi_request_fn 0.0012
1 scsi_malloc 0.0046
1 refill_inactive 0.0021
1 real_lookup 0.0028
1 rb_erase 0.0033
1 pty_write_room 0.0156
1 pipe_wait 0.0040
1 pipe_release 0.0042
1 packet_rcv 0.0013
1 nr_free_buffer_pages 0.0139
1 normal_poll 0.0027
1 mmput 0.0061
1 mm_release 0.0192
1 lstrnlen_user 0.0278
1 lookup_create 0.0054
1 locate_fd 0.0030
1 lcopy_from_user 0.0357
1 kstat_read_proc 0.0014
1 iput 0.0016
1 ip_rcv 0.0009
1 ip_local_deliver 0.0020
1 insert_vm_struct 0.0050
1 inode_has_buffers 0.0227
1 inode_change_ok 0.0021
1 inet_recvmsg 0.0100
1 in_egroup_p 0.0192
1 getrusage 0.0017
1 get_unused_buffer_head 0.0056
1 get_tty_driver 0.0104
1 get_pid 0.0028
1 get_new_inode 0.0019
1 get_hash_table 0.0057
1 generic_make_request 0.0023
1 generic_file_mmap 0.0083
1 generic_file_llseek 0.0052
1 generic_file_direct_IO 0.0016
1 generic_commit_write 0.0069
1 free_pages 0.0147
1 flush_signal_handlers 0.0192
1 flush_kernel_icache_range_asm 0.0147
1 flush_data_cache_local 0.0250
1 flush_cache_all_local 0.0357
1 find_inode 0.0058
1 fdtdone 0.0156
1 ext2_prepare_write 0.0208
1 ext2_lookup 0.0081
1 ext2_get_page 0.0074
1 ext2_free_branches 0.0023
1 ext2_create 0.0050
1 ext2_alloc_block 0.0060
1 do_sigaltstack 0.0028
1 do_settimeofday 0.0035
1 do_pipe 0.0012
1 discard_buffer 0.0034
1 del_timer 0.0208
1 de_put 0.0078
1 d_invalidate 0.0071
1 d_delete 0.0063
1 d_alloc 0.0023
1 create_empty_buffers 0.0063
1 compute_creds 0.0024
1 clean_inode 0.0061
1 bcopy 0.0278
1 balance_dirty_state 0.0069
1 add_wait_queue 0.0208
1 add_timer 0.0038
1 add_page_to_hash_queue 0.0081
1 _switch_to_ret 0.0013
1 _switch_to 0.0093
1 __vma_link 0.0046
1 __remove_from_lru_list 0.0078
1 __insert_vm_struct 0.0066
1 __insert_into_lru_list 0.0044
1 __get_free_pages 0.0179
1 __block_commit_write 0.0027
1 $lslen_nzero 0.0625
1 $$mulU 0.0019