Re: X86_64 Ctx switch times - 32bit vs 64bit

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> > Are there more context switching overheads when running 32bit programs on
> > a 64bit kernel?
>
> Should be nearly the same in theory, no. This means 32bit programs use %gs
> as thread register which is a bit more costly to switch because
> the kernel uses it internally too, but the difference should be less
> than that.
>
> I suspect your program is more testing the locks anyways, perhaps
> there is some other difference in the glibc. e.g. 32bit glibc compiled
> for pre 686 CPUs has slower locks.
>
> oprofile might provide more clue where the overhead is.
>
> -Andi

I ran the 32 bit and 64 bit versions in a loop for good amount of time and 
captured oprofile report for vmlinux after each run. For the 32 bit runs the 
top 5 are - (Also attached are complete reports after 32 bit and 64 bit runs)

samples  %        symbol name
20820    11.5424  copy_user_generic_c
12990     7.2015  ia32_syscall
10131     5.6165  gs_change
9053      5.0189  __dequeue_signal
7494      4.1546  find_pid

For the 64 bit run top 5 are -
samples  %        symbol name
10604     8.1075  system_call
8497      6.4965  __switch_to
8041      6.1479  do_signal
7712      5.8963  schedule
6538      4.9987  __dequeue_signal

I am yet to interpret/analyze the above...

Parag  
opreport -l /usr/src/linux/vmlinux
CPU: AMD64 processors, speed 797.944 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Cycles outside of halt state) with a unit mask of 0x00 (No unit mask) count 100000
samples  %        symbol name
20820    11.5424  copy_user_generic_c
12990     7.2015  ia32_syscall
10131     5.6165  gs_change
9053      5.0189  __dequeue_signal
7494      4.1546  find_pid
7313      4.0542  schedule
5728      3.1755  sys_rt_sigsuspend
5043      2.7958  ia32_setup_sigcontext
4577      2.5374  __group_complete_signal
4308      2.3883  memcpy
4280      2.3728  do_signal
4250      2.3562  save_i387_ia32
4116      2.2819  acpi_processor_idle
3547      1.9664  retint_restore_args
3510      1.9459  __switch_to
3286      1.8217  recalc_task_prio
3247      1.8001  recalc_sigpending_tsk
3096      1.7164  timer_interrupt
3067      1.7003  get_signal_to_deliver
3062      1.6975  kmem_cache_alloc
2930      1.6244  try_to_wake_up
2632      1.4591  restore_i387_ia32
2620      1.4525  finish_task_switch
2424      1.3438  ia32_setup_frame
2138      1.1853  ia32_cstar_target
2044      1.1332  kmem_cache_free
1988      1.1021  enqueue_task
1927      1.0683  ia32_restore_sigcontext
1756      0.9735  sys32_sigreturn
1500      0.8316  sys_kill
1369      0.7590  group_send_sig_info
1366      0.7573  __group_send_sig_info
1365      0.7567  dequeue_signal
1258      0.6974  kill_proc_info
1177      0.6525  recalc_sigpending
1130      0.6265  dequeue_task
1127      0.6248  send_signal
1062      0.5888  clear_page
1059      0.5871  ia32_ptregs_common
983       0.5450  sys32_rt_sigprocmask
831       0.4607  effective_prio
831       0.4607  int_ret_from_sys_call
724       0.4014  signal_wake_up
722       0.4003  sys_rt_sigprocmask
638       0.3537  task_rq_lock
623       0.3454  find_task_by_pid_type
618       0.3426  retint_swapgs
537       0.2977  sched_clock
524       0.2905  ia32_sysret
492       0.2728  __sigqueue_alloc
427       0.2367  search_by_key
391       0.2168  unmap_vmas
389       0.2157  task_curr
382       0.2118  stub32_rt_sigsuspend
371       0.2057  load_gs_index
346       0.1918  copy_page
305       0.1691  sig_ignored
284       0.1574  __d_lookup
280       0.1552  handle_stop_signal
260       0.1441  check_kill_permission
257       0.1425  ia32_do_syscall
245       0.1358  do_select
243       0.1347  memset
237       0.1314  get_sigframe
235       0.1303  find_vma
233       0.1292  copy_to_user
232       0.1286  deactivate_task
231       0.1281  clear_page_range
227       0.1258  memmove
216       0.1197  int_with_check
210       0.1164  page_fault
204       0.1131  unix_poll
202       0.1120  link_path_walk
199       0.1103  unix_ioctl
183       0.1015  ide_inb
176       0.0976  i8042_interrupt
176       0.0976  thread_return
173       0.0959  __down_interruptible
173       0.0959  system_call
170       0.0942  copy_page_range
161       0.0893  apic_timer_interrupt
158       0.0876  IRQ0x00_interrupt
146       0.0809  copy_from_user
146       0.0809  copy_user_generic
144       0.0798  init_fpu
133       0.0737  free_uid
132       0.0732  do_no_page
130       0.0721  buffered_rmqueue
125       0.0693  __mod_page_state
125       0.0693  __pollwait
125       0.0693  ide_outb
125       0.0693  remove_wait_queue
118       0.0654  wake_up_state
114       0.0632  __find_get_block
113       0.0626  create_virtual_node
111       0.0615  iret_label
106       0.0588  add_wait_queue
99        0.0549  sock_create_lite
97        0.0538  stub32_sigreturn
94        0.0521  __up_read
94        0.0521  _devfs_search_dir
92        0.0510  __delay
83        0.0460  cstar_do_call
83        0.0460  kfree
82        0.0455  sysret_check
80        0.0444  get_num_ver
80        0.0444  unix_stream_recvmsg
73        0.0405  sd_part_size
71        0.0394  pipe_poll
69        0.0383  profile_hit
68        0.0377  __kmalloc
66        0.0366  vfs_read
65        0.0360  sys_select
61        0.0338  free_hot_cold_page
61        0.0338  unix_stream_sendmsg
60        0.0333  groups_search
59        0.0327  copy_process
57        0.0316  do_page_fault
54        0.0299  __reiserfs_permission
54        0.0299  rw_verify_area
53        0.0294  __alloc_pages
53        0.0294  __down_read
53        0.0294  handle_mm_fault
50        0.0277  sys32_kill
48        0.0266  strncpy_from_user
47        0.0261  pci_conf1_read
47        0.0261  pte_alloc_map
46        0.0255  __do_IRQ
44        0.0244  fix_nodes
42        0.0233  free_pages_bulk
41        0.0227  direntry_part_size
41        0.0227  ret_from_sys_call
40        0.0222  direntry_create_vi
40        0.0222  vfs_write
39        0.0216  dput
39        0.0216  fget
39        0.0216  ide_outsl
38        0.0211  filemap_nopage
38        0.0211  poll_freewait
37        0.0205  free_page_and_swap_cache
36        0.0200  __rmqueue
36        0.0200  ll_rw_block
35        0.0194  error_exit
35        0.0194  fput
35        0.0194  inotify_inode_queue_event
35        0.0194  put_page
34        0.0188  bad_range
33        0.0183  find_vma_prev
33        0.0183  free_block
33        0.0183  inotify_dentry_parent_queue_event
33        0.0183  reiserfs_prepare_for_journal
33        0.0183  run_timer_softirq
33        0.0183  sys_read
32        0.0177  __down_write
32        0.0177  do_mmap_pgoff
31        0.0172  __wake_up
31        0.0172  do_lookup
31        0.0172  sleep_on_timeout
30        0.0166  cond_resched
30        0.0166  do_sync_read
30        0.0166  normal_poll
30        0.0166  sys_poll
29        0.0161  __wake_up_bit
29        0.0161  bit_waitqueue
29        0.0161  handle_IRQ_event
29        0.0161  path_lookup
29        0.0161  scheduler_tick
28        0.0155  cache_alloc_refill
28        0.0155  do_readv_writev
28        0.0155  ide_insl
28        0.0155  mark_page_accessed
28        0.0155  permission
28        0.0155  update_process_times
27        0.0150  indirect_part_size
27        0.0150  irq_exit
27        0.0150  rb_erase
27        0.0150  sock_aio_read
26        0.0144  __page_cache_release
26        0.0144  copy_mount_options
25        0.0139  do_softirq
25        0.0139  do_wait
25        0.0139  ide_outbsync
25        0.0139  radix_tree_lookup
25        0.0139  schedule_timeout
25        0.0139  sys_mprotect
25        0.0139  vma_adjust
24        0.0133  do_munmap
24        0.0133  do_wp_page
24        0.0133  rb_insert_color
24        0.0133  update_mem_hiwater
24        0.0133  zone_watermark_ok
23        0.0128  pipe_writev
23        0.0128  skb_dequeue
23        0.0128  xattr_lookup_poison
22        0.0122  fget_light
22        0.0122  find_get_page
22        0.0122  raise_softirq
22        0.0122  reiserfs_restore_prepared_buffer
22        0.0122  sk_alloc
22        0.0122  tty_ldisc_try
21        0.0116  __wake_up_common
21        0.0116  direct_part_size
21        0.0116  do_timer
21        0.0116  sys_rt_sigreturn
21        0.0116  tty_poll
21        0.0116  vfs_ioctl
20        0.0111  account_system_time
20        0.0111  do_journal_end
20        0.0111  in_group_p
20        0.0111  journal_mark_dirty
20        0.0111  wait_tb_buffers_until_unlocked
19        0.0105  find_vma_prepare
19        0.0105  number
19        0.0105  unfix_nodes
18        0.0100  __do_softirq
18        0.0100  __kfree_skb
18        0.0100  __mod_timer
18        0.0100  follow_mount
18        0.0100  int_careful
18        0.0100  sock_alloc_send_skb
17        0.0094  __unix_find_socket_byname
17        0.0094  cpu_idle
17        0.0094  reiserfs_new_inode
17        0.0094  sock_def_error_report
17        0.0094  strnlen_user
16        0.0089  __pagevec_lru_add_active
16        0.0089  alloc_skb
16        0.0089  attach_pid
16        0.0089  device_not_available
16        0.0089  do_balance
16        0.0089  remove_vm_struct
16        0.0089  vsnprintf
15        0.0083  check_rlimit
15        0.0083  do_exit
15        0.0083  do_ioctl
15        0.0083  leaf_insert_into_buf
15        0.0083  reiserfs_update_sd_size
15        0.0083  set_page_dirty
14        0.0078  __getblk
14        0.0078  error_sti
14        0.0078  internal_add_timer
14        0.0078  lru_cache_add_active
14        0.0078  math_state_restore
14        0.0078  reiserfs_permission
14        0.0078  skb_copy_bits
14        0.0078  sys_writev
14        0.0078  unix_dgram_recvmsg
13        0.0072  __get_free_pages
13        0.0072  detach_pid
13        0.0072  dnotify_parent
13        0.0072  notifier_call_chain
13        0.0072  sd_create_vi
13        0.0072  search_by_entry_key
13        0.0072  unix_write_space
13        0.0072  vma_merge
12        0.0067  do_generic_mapping_read
12        0.0067  free_hot_page
12        0.0067  free_pages
12        0.0067  page_add_anon_rmap
12        0.0067  pathrelse_and_restore
12        0.0067  profile_tick
12        0.0067  sigprocmask
12        0.0067  smp_local_timer_interrupt
12        0.0067  sys_access
12        0.0067  update_atime
11        0.0061  IRQ0x0c_interrupt
11        0.0061  __down_read_trylock
11        0.0061  arch_get_unmapped_area
11        0.0061  comp_items
11        0.0061  do_con_write
11        0.0061  expand_files
11        0.0061  kprobe_exceptions_notify
11        0.0061  sys_write
10        0.0055  default_wake_function
10        0.0055  dnotify_flush
10        0.0055  find_next_zero_bit
10        0.0055  get_neighbors
10        0.0055  poll_initwait
10        0.0055  prepare_for_delete_or_cut
10        0.0055  ret_from_intr
10        0.0055  smp_apic_timer_interrupt
10        0.0055  wake_up_bit
9         0.0050  IRQ0x10_interrupt
9         0.0050  __fput
9         0.0050  __rb_rotate_left
9         0.0050  as_insert_request
9         0.0050  copy_files
9         0.0050  do_IRQ
9         0.0050  do_sigaction
9         0.0050  reiserfs_prepare_file_region_for_write
9         0.0050  release_pages
9         0.0050  release_task
9         0.0050  vma_prio_tree_add
8         0.0044  ___pskb_trim
8         0.0044  __exit_signal
8         0.0044  __free_pages
8         0.0044  __up_write
8         0.0044  account_it_prof
8         0.0044  account_user_time
8         0.0044  ack_edge_ioapic_irq
8         0.0044  alloc_inode
8         0.0044  can_share_swap_page
8         0.0044  d_alloc
8         0.0044  dentry_open
8         0.0044  dlci_ioctl_set
8         0.0044  do_sync_write
8         0.0044  generic_delete_inode
8         0.0044  generic_file_read
8         0.0044  generic_fillattr
8         0.0044  get_task_mm
8         0.0044  ide_do_request
8         0.0044  leaf_delete_items_entirely
8         0.0044  open_namei
8         0.0044  page_remove_rmap
8         0.0044  prio_tree_insert
8         0.0044  radix_tree_tag_clear
8         0.0044  skb_copy_and_csum_dev
8         0.0044  sock_aio_write
8         0.0044  verify_iovec
8         0.0044  vma_prio_tree_remove
7         0.0039  __anon_vma_link
7         0.0039  __generic_file_aio_read
7         0.0039  __unhash_process
7         0.0039  __user_walk
7         0.0039  can_dirty
7         0.0039  common_interrupt
7         0.0039  compat_sys_nanosleep
7         0.0039  del_timer
7         0.0039  do_journal_begin_r
7         0.0039  file_read_actor
7         0.0039  flush_old_exec
7         0.0039  get_empty_filp
7         0.0039  getname
7         0.0039  ide_intr
7         0.0039  ide_wait_stat
7         0.0039  journal_begin
7         0.0039  kernel_recvmsg
7         0.0039  leaf_copy_items_entirely
7         0.0039  leaf_move_items
7         0.0039  memcpy_toiovec
7         0.0039  mmput
7         0.0039  note_interrupt
7         0.0039  pci_vector_resources
7         0.0039  pipe_readv
7         0.0039  reiserfs_allocate_blocknrs
7         0.0039  reiserfs_in_journal
7         0.0039  reiserfs_insert_item
7         0.0039  sys_ioctl
7         0.0039  tty_hung_up_p
7         0.0039  unlock_buffer
7         0.0039  vfs_readdir
6         0.0033  __clear_user
6         0.0033  __do_page_cache_readahead
6         0.0033  __find_get_block_slow
6         0.0033  __vm_enough_memory
6         0.0033  alloc_pidmap
6         0.0033  anon_vma_prepare
6         0.0033  cache_reap
6         0.0033  con_chars_in_buffer
6         0.0033  current_fs_time
6         0.0033  error_entry
6         0.0033  indirect_create_vi
6         0.0033  input_event
6         0.0033  load_elf32_binary
6         0.0033  locks_remove_flock
6         0.0033  locks_remove_posix
6         0.0033  n_tty_chars_in_buffer
6         0.0033  pty_chars_in_buffer
6         0.0033  reiserfs_cut_from_item
6         0.0033  reiserfs_find_entry
6         0.0033  reiserfs_get_block
6         0.0033  sched_fork
6         0.0033  set_page_refs
6         0.0033  skb_clone
6         0.0033  sock_sendpage
6         0.0033  split_vma
6         0.0033  sys_rt_sigaction
6         0.0033  tty_ldisc_deref
6         0.0033  unix_dgram_sendmsg
6         0.0033  unix_shutdown
5         0.0028  IRQ0x0f_interrupt
5         0.0028  __vm_stat_account
5         0.0028  _make_cpu_key
5         0.0028  add_save_link
5         0.0028  cascade
5         0.0028  check_right
5         0.0028  clear_inode
5         0.0028  con_write_room
5         0.0028  conv_uni_to_pc
5         0.0028  copy_namespace
5         0.0028  copy_semundo
5         0.0028  cp_new_stat
5         0.0028  direct_create_vi
5         0.0028  do_notify_resume
5         0.0028  leaf_cut_from_buffer
5         0.0028  load_elf_binary
5         0.0028  mousedev_notify_readers
5         0.0028  pathrelse
5         0.0028  pci_bus_read_config_word
5         0.0028  r5_hash
5         0.0028  radix_tree_tag_set
5         0.0028  read_chan
5         0.0028  reiserfs_delete_solid_item
5         0.0028  sched_exit
5         0.0028  sd_is_left_mergeable
5         0.0028  search_for_position_by_key
5         0.0028  serio_interrupt
5         0.0028  sock_readv
5         0.0028  sys32_mmap2
5         0.0028  sys_fcntl
5         0.0028  tty_ldisc_ref_wait
5         0.0028  write_chan
4         0.0022  IRQ0x0e_interrupt
4         0.0022  __block_write_full_page
4         0.0022  __vma_link_rb
4         0.0022  activate_page
4         0.0022  anon_vma_unlink
4         0.0022  cache_flusharray
4         0.0022  cap_capable
4         0.0022  cdrom_pc_intr
4         0.0022  copy_siginfo_to_user
4         0.0022  count
4         0.0022  do_notify_parent
4         0.0022  drain_array_locked
4         0.0022  elv_remove_request
4         0.0022  exit_intr
4         0.0022  fb_flashcursor
4         0.0022  file_ra_state_init
4         0.0022  generic_ide_ioctl
4         0.0022  get_unused_fd
4         0.0022  iget5_locked
4         0.0022  inode_update_time
4         0.0022  keyed_hash
4         0.0022  may_open
4         0.0022  path_release
4         0.0022  pipe_ioctl
4         0.0022  prio_tree_replace
4         0.0022  read_cache_page
4         0.0022  reiserfs_add_entry
4         0.0022  reiserfs_async_progress_wait
4         0.0022  reiserfs_commit_page
4         0.0022  reiserfs_file_write
4         0.0022  reiserfs_lookup
4         0.0022  reiserfs_rmdir
4         0.0022  release_console_sem
4         0.0022  schedule_tail
4         0.0022  shrink_dcache_parent
4         0.0022  skb_clone_fraglist
4         0.0022  skb_drop_fraglist
4         0.0022  skb_queue_purge
4         0.0022  snd_ctl_read
4         0.0022  sock_readv_writev
4         0.0022  sock_sendmsg
4         0.0022  strlen
4         0.0022  submit_bh
4         0.0022  sys_getdents64
4         0.0022  vfs_getattr
4         0.0022  vfs_writev
4         0.0022  vma_prio_tree_insert
4         0.0022  wake_up_new_task
4         0.0022  worker_thread
3         0.0017  SHATransform
3         0.0017  __bio_add_page
3         0.0017  __end_that_request_first
3         0.0017  __free_pages_ok
3         0.0017  __ide_end_request
3         0.0017  __make_request
3         0.0017  __mark_inode_dirty
3         0.0017  __remove_shared_vm_struct
3         0.0017  __set_page_dirty_nobuffers
3         0.0017  __tasklet_schedule
3         0.0017  __vma_link
3         0.0017  arch_unmap_area
3         0.0017  as_completed_request
3         0.0017  as_next_request
3         0.0017  bio_alloc
3         0.0017  blkdev_ioctl
3         0.0017  cdrom_end_request
3         0.0017  check_left
3         0.0017  check_ra_success
3         0.0017  console_conditional_schedule
3         0.0017  d_rehash
3         0.0017  dma_map_sg
3         0.0017  do_fork
3         0.0017  do_setitimer
3         0.0017  do_sigaltstack
3         0.0017  eligible_child
3         0.0017  elv_next_request
3         0.0017  fd_install
3         0.0017  flush_commit_list
3         0.0017  get_far_parent
3         0.0017  get_parents
3         0.0017  get_zeroed_page
3         0.0017  i_attrs_to_sd_attrs
3         0.0017  ide_build_dmatable
3         0.0017  ide_insw
3         0.0017  ide_outl
3         0.0017  inode2sd
3         0.0017  inode_has_buffers
3         0.0017  inotify_inode_is_dead
3         0.0017  journal_end
3         0.0017  lookup_create
3         0.0017  make_le_item_head
3         0.0017  memcpy_fromiovec
3         0.0017  mousedev_event
3         0.0017  mousedev_packet
3         0.0017  mousedev_poll
3         0.0017  mousedev_read
3         0.0017  mpage_writepages
3         0.0017  new_inode
3         0.0017  out_of_line_wait_on_bit_lock
3         0.0017  page_cache_readahead
3         0.0017  page_getlink
3         0.0017  page_waitqueue
3         0.0017  profile_munmap
3         0.0017  radix_tree_gang_lookup_tag
3         0.0017  reiserfs_cache_default_acl
3         0.0017  reiserfs_do_truncate
3         0.0017  reiserfs_paste_into_item
3         0.0017  reiserfs_read_locked_inode
3         0.0017  reiserfs_readdir
3         0.0017  reiserfs_unlink
3         0.0017  rh_report_status
3         0.0017  rm_from_queue
3         0.0017  run_local_timers
3         0.0017  sock_def_readable
3         0.0017  sock_kfree_s
3         0.0017  sys_mmap
3         0.0017  sys_open
3         0.0017  sys_setitimer
3         0.0017  task_timeslice
3         0.0017  test_set_page_writeback
3         0.0017  timespec_trunc
3         0.0017  tty_ioctl
3         0.0017  tty_write
3         0.0017  unix_release_sock
3         0.0017  unlock_page
3         0.0017  vfs_create
3         0.0017  vfs_mkdir
3         0.0017  vfs_rename
3         0.0017  vfs_stat
3         0.0017  vma_link
2         0.0011  B_IS_IN_TREE
2         0.0011  __blk_put_request
2         0.0011  __brelse
2         0.0011  __detach_pid
2         0.0011  __filemap_fdatawrite_range
2         0.0011  __put_task_struct
2         0.0011  __rb_rotate_right
2         0.0011  __rcu_process_callbacks
2         0.0011  __sock_create
2         0.0011  _reiserfs_free_block
2         0.0011  add_timer_randomness
2         0.0011  add_to_page_cache
2         0.0011  add_to_page_cache_lru
2         0.0011  as_may_queue
2         0.0011  as_merge
2         0.0011  as_put_request
2         0.0011  as_queue_empty
2         0.0011  autofs4_revalidate
2         0.0011  autofs4_root_ioctl
2         0.0011  balance_dirty_pages_ratelimited
2         0.0011  can_vma_merge_after
2         0.0011  cdrom_queue_packet_command
2         0.0011  cdrom_read_toc
2         0.0011  cdrom_release
2         0.0011  cdrom_start_packet_command
2         0.0011  compat_sys_wait4
2         0.0011  d_instantiate
2         0.0011  devfs_follow_link
2         0.0011  do_execve
2         0.0011  do_gettimeofday
2         0.0011  do_pipe
2         0.0011  do_posix_clock_monotonic_gettime_parts
2         0.0011  exit_aio
2         0.0011  exit_itimers
2         0.0011  exit_mmap
2         0.0011  exit_thread
2         0.0011  filp_open
2         0.0011  flush_sigqueue
2         0.0011  free_pipe_info
2         0.0011  generic_drop_inode
2         0.0011  generic_write_checks
2         0.0011  get_index
2         0.0011  get_request
2         0.0011  get_rfree
2         0.0011  get_super
2         0.0011  get_unmapped_area
2         0.0011  ide_cdrom_prep_fn
2         0.0011  ide_execute_command
2         0.0011  indirect_is_left_mergeable
2         0.0011  init_page_buffers
2         0.0011  invalidate_bdev
2         0.0011  iput
2         0.0011  journal_mark_freed
2         0.0011  kill_fasync
2         0.0011  kref_get
2         0.0011  kthread_should_stop
2         0.0011  leaf_paste_entries
2         0.0011  leaf_paste_in_buffer
2         0.0011  ll_back_merge_fn
2         0.0011  lookup_hash
2         0.0011  lookup_one_len
2         0.0011  make_cpu_key
2         0.0011  mempool_alloc
2         0.0011  mempool_alloc_slab
2         0.0011  mm_release
2         0.0011  n_tty_receive_room
2         0.0011  page_add_file_rmap
2         0.0011  page_follow_link_light
2         0.0011  pipe_read
2         0.0011  prepare_binprm
2         0.0011  prio_tree_remove
2         0.0011  pskb_put
2         0.0011  ptregscall_common
2         0.0011  pty_write_room
2         0.0011  put_files_struct
2         0.0011  reiserfs_choose_packing
2         0.0011  reiserfs_get_unused_objectid
2         0.0011  reiserfs_prepare_write
2         0.0011  reiserfs_update_inode_transaction
2         0.0011  save_i387
2         0.0011  scan_bitmap_block
2         0.0011  send_sigio_to_task
2         0.0011  seq_printf
2         0.0011  set_fs_pwd
2         0.0011  show_stat
2         0.0011  sk_stop_timer
2         0.0011  sock_recvmsg
2         0.0011  sock_release
2         0.0011  sock_wfree
2         0.0011  sockfd_lookup
2         0.0011  strcmp
2         0.0011  stub_rt_sigreturn
2         0.0011  sys_brk
2         0.0011  sys_munmap
2         0.0011  sys_newfstat
2         0.0011  sys_newlstat
2         0.0011  sys_newstat
2         0.0011  unix_dgram_connect
2         0.0011  wake_up_process
1        5.5e-04  SELECT_DRIVE
1        5.5e-04  __add_entropy_words
1        5.5e-04  __d_path
1        5.5e-04  __elv_add_request
1        5.5e-04  __get_user_4
1        5.5e-04  __insert_inode_hash
1        5.5e-04  __map_syscall32
1        5.5e-04  __pagevec_lru_add
1        5.5e-04  __queue_work
1        5.5e-04  __set_page_dirty_buffers
1        5.5e-04  __unix_insert_socket
1        5.5e-04  __wake_up_sync
1        5.5e-04  _get_block_create_0
1        5.5e-04  add_disk_randomness
1        5.5e-04  add_input_randomness
1        5.5e-04  anon_pipe_buf_release
1        5.5e-04  anon_vma_link
1        5.5e-04  as_antic_stop
1        5.5e-04  as_choose_req
1        5.5e-04  as_latter_request
1        5.5e-04  as_merged_request
1        5.5e-04  as_move_to_dispatch
1        5.5e-04  as_remove_queued_request
1        5.5e-04  as_remove_request
1        5.5e-04  as_set_request
1        5.5e-04  ata_input_data
1        5.5e-04  ata_output_data
1        5.5e-04  atapi_input_bytes
1        5.5e-04  atkbd_interrupt
1        5.5e-04  autofs4_dir_rmdir
1        5.5e-04  autofs4_wait
1        5.5e-04  autofs4_wait_release
1        5.5e-04  autoremove_wake_function
1        5.5e-04  balance_internal
1        5.5e-04  bd_acquire
1        5.5e-04  bio_endio
1        5.5e-04  bio_phys_segments
1        5.5e-04  bio_put
1        5.5e-04  blk_get_backing_dev_info
1        5.5e-04  blk_plug_device
1        5.5e-04  blk_queue_bounce
1        5.5e-04  blk_remove_plug
1        5.5e-04  blkdev_open
1        5.5e-04  calc_deleted_bytes_number
1        5.5e-04  cap_bprm_apply_creds
1        5.5e-04  cap_vm_enough_memory
1        5.5e-04  cdev_put
1        5.5e-04  cdrom_check_status
1        5.5e-04  cdrom_decode_status
1        5.5e-04  cdrom_get_media_event
1        5.5e-04  cdrom_ioctl
1        5.5e-04  cdrom_media_changed
1        5.5e-04  cdrom_open
1        5.5e-04  cdrom_saw_media_change
1        5.5e-04  chrdev_open
1        5.5e-04  complete
1        5.5e-04  console_callback
1        5.5e-04  copy_io_context
1        5.5e-04  copy_item_head
1        5.5e-04  copy_strings
1        5.5e-04  copy_strings_kernel
1        5.5e-04  copy_thread
1        5.5e-04  cpufreq_frequency_table_verify
1        5.5e-04  d_delete
1        5.5e-04  d_invalidate
1        5.5e-04  decrement_bcount
1        5.5e-04  decrement_counters_in_path
1        5.5e-04  destroy_context
1        5.5e-04  devfs_d_delete
1        5.5e-04  direntry_check_left
1        5.5e-04  do_balance_mark_leaf_dirty
1        5.5e-04  do_gettimeoffset_tsc
1        5.5e-04  do_group_exit
1        5.5e-04  do_open
1        5.5e-04  do_set_thread_area
1        5.5e-04  do_sysctl
1        5.5e-04  do_writepages
1        5.5e-04  drive_is_ready
1        5.5e-04  end_edge_ioapic_irq
1        5.5e-04  end_page_writeback
1        5.5e-04  error_kernelspace
1        5.5e-04  eventpoll_init_file
1        5.5e-04  exit_mm
1        5.5e-04  exit_sem
1        5.5e-04  expand_stack
1        5.5e-04  extract_entropy
1        5.5e-04  file_move
1        5.5e-04  filemap_fdatawait
1        5.5e-04  filldir64
1        5.5e-04  filp_close
1        5.5e-04  find_inode
1        5.5e-04  find_mergeable_anon_vma
1        5.5e-04  flush_gart
1        5.5e-04  flush_signal_handlers
1        5.5e-04  flush_thread
1        5.5e-04  free_buffer_head
1        5.5e-04  generic_make_request
1        5.5e-04  get_cnode
1        5.5e-04  get_dcookie
1        5.5e-04  get_empty_nodes
1        5.5e-04  get_lfree
1        5.5e-04  get_stack
1        5.5e-04  get_third_component
1        5.5e-04  ia32_setup_arg_pages
1        5.5e-04  ide_dma_intr
1        5.5e-04  ide_do_drive_cmd
1        5.5e-04  ide_do_rw_cdrom
1        5.5e-04  ide_do_rw_disk
1        5.5e-04  ide_init_drive_cmd
1        5.5e-04  idecd_open
1        5.5e-04  idle_cpu
1        5.5e-04  init_new_context
1        5.5e-04  init_tb_struct
1        5.5e-04  inode_change_ok
1        5.5e-04  inode_get_bytes
1        5.5e-04  invalidate_inode_buffers
1        5.5e-04  invalidate_inode_pages
1        5.5e-04  io_schedule_timeout
1        5.5e-04  is_bad_inode
1        5.5e-04  is_leaf_removable
1        5.5e-04  kmem_freepages
1        5.5e-04  kobject_get
1        5.5e-04  kref_put
1        5.5e-04  leaf_copy_boundary_item
1        5.5e-04  leaf_delete_items
1        5.5e-04  load_aout_binary
1        5.5e-04  load_elf_interp
1        5.5e-04  lookup_bdev
1        5.5e-04  lru_add_drain
1        5.5e-04  lru_cache_add
1        5.5e-04  make_empty_dir_item
1        5.5e-04  max_sane_readahead
1        5.5e-04  mempool_free
1        5.5e-04  mod_timer
1        5.5e-04  move_page_tables
1        5.5e-04  mpage_end_io_read
1        5.5e-04  mpage_readpages
1        5.5e-04  n_tty_receive_buf
1        5.5e-04  nanosleep_restart
1        5.5e-04  new_inode_init
1        5.5e-04  next_thread
1        5.5e-04  nf_queue
1        5.5e-04  notify_change
1        5.5e-04  page_put_link
1        5.5e-04  pci_mmap_page_range
1        5.5e-04  pipe_wait
1        5.5e-04  pipe_write
1        5.5e-04  pipe_write_fasync
1        5.5e-04  pipefs_delete_dentry
1        5.5e-04  prepare_to_wait_exclusive
1        5.5e-04  profile_pc
1        5.5e-04  prune_dcache
1        5.5e-04  put_disk
1        5.5e-04  put_filesystem
1        5.5e-04  put_io_context
1        5.5e-04  queue_delayed_work
1        5.5e-04  radix_tree_gang_lookup
1        5.5e-04  radix_tree_insert
1        5.5e-04  rcu_check_callbacks
1        5.5e-04  reiserfs_alloc_inode
1        5.5e-04  reiserfs_can_fit_pages
1        5.5e-04  reiserfs_create
1        5.5e-04  reiserfs_delete_inode
1        5.5e-04  reiserfs_delete_object
1        5.5e-04  reiserfs_discard_prealloc
1        5.5e-04  reiserfs_file_release
1        5.5e-04  reiserfs_free_block
1        5.5e-04  reiserfs_releasepage
1        5.5e-04  reiserfs_set_page_dirty
1        5.5e-04  reiserfs_writepage
1        5.5e-04  release_thread
1        5.5e-04  remove_save_link
1        5.5e-04  retint_check
1        5.5e-04  rff_action
1        5.5e-04  schedule_work
1        5.5e-04  scsi_cmd_ioctl
1        5.5e-04  send_sig_info
1        5.5e-04  set_parameters
1        5.5e-04  set_task_comm
1        5.5e-04  skb_release_data
1        5.5e-04  snd_ctl_poll
1        5.5e-04  sock_aio_dtor
1        5.5e-04  sock_create_kern
1        5.5e-04  sock_ioctl
1        5.5e-04  sock_wake_async
1        5.5e-04  sock_warn_obsolete_bsdism
1        5.5e-04  sock_wmalloc
1        5.5e-04  sprintf
1        5.5e-04  strlcpy
1        5.5e-04  strncmp
1        5.5e-04  sync_blockdev
1        5.5e-04  sync_sb_inodes
1        5.5e-04  sys32_gettimeofday
1        5.5e-04  sys32_mprotect
1        5.5e-04  sys32_rt_sigaction
1        5.5e-04  sys32_set_thread_area
1        5.5e-04  sys_chdir
1        5.5e-04  sys_close
1        5.5e-04  sys_getppid
1        5.5e-04  sys_getpriority
1        5.5e-04  sys_lseek
1        5.5e-04  sys_mkdir
1        5.5e-04  sys_mount
1        5.5e-04  sys_mremap
1        5.5e-04  sys_nanosleep
1        5.5e-04  sys_rmdir
1        5.5e-04  sys_unlink
1        5.5e-04  sysret_careful
1        5.5e-04  test_clear_page_dirty
1        5.5e-04  test_clear_page_writeback
1        5.5e-04  try_to_release_page
1        5.5e-04  tty_read
1        5.5e-04  unix_dgram_disconnected
1        5.5e-04  unix_find_other
1        5.5e-04  unix_stream_connect
1        5.5e-04  unlock_new_inode
1        5.5e-04  vfs_lstat
1        5.5e-04  vfs_rmdir
1        5.5e-04  wait_for_completion
1        5.5e-04  wait_on_page_writeback_range
1        5.5e-04  write_new_vid

samples  %        symbol name
10604     8.1075  system_call
8497      6.4965  __switch_to
8041      6.1479  do_signal
7712      5.8963  schedule
6538      4.9987  __dequeue_signal
6431      4.9169  find_pid
5128      3.9207  memcpy
5114      3.9100  __group_complete_signal
4382      3.3503  sys_rt_sigsuspend
3423      2.6171  try_to_wake_up
3235      2.4734  sysret_check
3211      2.4550  recalc_sigpending_tsk
3152      2.4099  copy_user_generic_c
3132      2.3946  get_signal_to_deliver
3127      2.3908  acpi_processor_idle
3021      2.3098  recalc_task_prio
2823      2.1584  sys_rt_sigreturn
2602      1.9894  kmem_cache_alloc
2358      1.8028  kmem_cache_free
2243      1.7149  timer_interrupt
2181      1.6675  enqueue_task
2110      1.6132  dequeue_signal
1884      1.4404  kill_proc_info
1870      1.4297  __group_send_sig_info
1624      1.2417  sys_kill
1414      1.0811  group_send_sig_info
1358      1.0383  send_signal
1234      0.9435  sys_rt_sigprocmask
1179      0.9014  dequeue_task
1108      0.8471  ptregscall_common
1095      0.8372  retint_restore_args
1045      0.7990  stub_rt_sigreturn
968       0.7401  recalc_sigpending
910       0.6958  ret_from_sys_call
847       0.6476  effective_prio
819       0.6262  signal_wake_up
811       0.6201  do_sigaltstack
724       0.5535  find_task_by_pid_type
717       0.5482  finish_task_switch
659       0.5038  stub_rt_sigsuspend
509       0.3892  __sigqueue_alloc
484       0.3701  sched_clock
471       0.3601  retint_swapgs
464       0.3548  task_rq_lock
421       0.3219  task_curr
343       0.2622  search_by_key
302       0.2309  copy_to_user
288       0.2202  check_kill_permission
283       0.2164  handle_stop_signal
275       0.2103  clear_page
261       0.1996  sig_ignored
240       0.1835  copy_from_user
224       0.1713  int_ret_from_sys_call
222       0.1697  unmap_vmas
211       0.1613  thread_return
196       0.1499  memmove
189       0.1445  deactivate_task
186       0.1422  __down_interruptible
179       0.1369  get_stack
178       0.1361  IRQ0x00_interrupt
177       0.1353  apic_timer_interrupt
160       0.1223  wake_up_state
147       0.1124  create_virtual_node
129       0.0986  free_uid
120       0.0917  do_select
116       0.0887  clear_page_range
116       0.0887  ide_inb
99        0.0757  find_vma
91        0.0696  memset
90        0.0688  __find_get_block
78        0.0596  get_num_ver
74        0.0566  page_fault
71        0.0543  __up_read
68        0.0520  unix_poll
65        0.0497  ide_outb
65        0.0497  unix_ioctl
64        0.0489  copy_page
63        0.0482  profile_hit
58        0.0443  remove_wait_queue
55        0.0421  __do_IRQ
49        0.0375  buffered_rmqueue
49        0.0375  pipe_poll
46        0.0352  __pollwait
45        0.0344  link_path_walk
45        0.0344  sock_create_lite
44        0.0336  __mod_page_state
44        0.0336  do_no_page
44        0.0336  i8042_interrupt
43        0.0329  do_wait
42        0.0321  __d_lookup
42        0.0321  int_with_check
40        0.0306  add_wait_queue
40        0.0306  direntry_create_vi
38        0.0291  scheduler_tick
38        0.0291  sd_part_size
37        0.0283  pci_conf1_read
34        0.0260  fix_nodes
33        0.0252  __kmalloc
32        0.0245  __down_read
32        0.0245  update_process_times
31        0.0237  irq_exit
29        0.0222  copy_process
29        0.0222  direct_part_size
29        0.0222  do_softirq
29        0.0222  do_timer
29        0.0222  iret_label
29        0.0222  run_timer_softirq
28        0.0214  do_page_fault
28        0.0214  find_vma_prepare
27        0.0206  handle_mm_fault
27        0.0206  sys_mprotect
27        0.0206  sys_poll
26        0.0199  kfree
26        0.0199  vfs_read
25        0.0191  __do_softirq
25        0.0191  cpu_idle
24        0.0183  find_vma_prev
24        0.0183  free_block
24        0.0183  free_pages_bulk
24        0.0183  handle_IRQ_event
23        0.0176  __alloc_pages
23        0.0176  ide_outsl
23        0.0176  raise_softirq
23        0.0176  ret_from_intr
23        0.0176  sd_create_vi
22        0.0168  number
22        0.0168  reiserfs_prepare_for_journal
21        0.0161  copy_page_range
21        0.0161  do_munmap
21        0.0161  poll_freewait
20        0.0153  ll_rw_block
20        0.0153  pipe_writev
20        0.0153  sleep_on_timeout
19        0.0145  do_mmap_pgoff
18        0.0138  direntry_part_size
18        0.0138  free_hot_cold_page
18        0.0138  journal_mark_dirty
18        0.0138  rb_erase
18        0.0138  reiserfs_restore_prepared_buffer
18        0.0138  strncpy_from_user
18        0.0138  sys_select
17        0.0130  bit_waitqueue
16        0.0122  __down_write
16        0.0122  __mod_timer
16        0.0122  normal_poll
16        0.0122  pte_alloc_map
15        0.0115  __wake_up_bit
15        0.0115  account_it_prof
15        0.0115  eligible_child
15        0.0115  error_exit
15        0.0115  filemap_nopage
15        0.0115  ide_insl
15        0.0115  rw_verify_area
15        0.0115  unfix_nodes
15        0.0115  zone_watermark_ok
14        0.0107  common_interrupt
14        0.0107  do_exit
14        0.0107  do_wp_page
14        0.0107  mark_page_accessed
14        0.0107  pipe_readv
14        0.0107  smp_local_timer_interrupt
14        0.0107  vma_merge
14        0.0107  vsnprintf
13        0.0099  __page_cache_release
13        0.0099  fget
13        0.0099  reiserfs_readdir
13        0.0099  tty_poll
12        0.0092  __wake_up_common
12        0.0092  leaf_delete_items_entirely
12        0.0092  pathrelse_and_restore
12        0.0092  profile_tick
12        0.0092  vfs_write
12        0.0092  vma_adjust
11        0.0084  IRQ0x10_interrupt
11        0.0084  __getblk
11        0.0084  __wake_up
11        0.0084  dput
11        0.0084  fput
11        0.0084  free_hot_page
11        0.0084  path_lookup
11        0.0084  strnlen_user
11        0.0084  unix_stream_sendmsg
11        0.0084  wait_tb_buffers_until_unlocked
11        0.0084  wake_up_bit
10        0.0076  bad_range
10        0.0076  cache_reap
10        0.0076  cond_resched
10        0.0076  do_balance
10        0.0076  update_mem_hiwater
9         0.0069  account_system_time
9         0.0069  generic_delete_inode
9         0.0069  ide_outbsync
9         0.0069  lru_cache_add_active
9         0.0069  schedule_timeout
9         0.0069  strlen
9         0.0069  sys_nanosleep
9         0.0069  unlock_buffer
8         0.0061  __get_free_pages
8         0.0061  __pagevec_lru_add_active
8         0.0061  __reiserfs_permission
8         0.0061  __rmqueue
8         0.0061  __up_write
8         0.0061  cache_alloc_refill
8         0.0061  check_left
8         0.0061  do_arch_prctl
8         0.0061  note_interrupt
8         0.0061  notifier_call_chain
8         0.0061  rb_insert_color
8         0.0061  reiserfs_update_sd_size
8         0.0061  sys_read
8         0.0061  tty_ldisc_try
7         0.0054  attach_pid
7         0.0054  check_rlimit
7         0.0054  expand_files
7         0.0054  inode2sd
7         0.0054  permission
7         0.0054  prio_tree_insert
7         0.0054  radix_tree_lookup
7         0.0054  remove_vm_struct
7         0.0054  seq_printf
7         0.0054  set_page_dirty
7         0.0054  sys_ioctl
7         0.0054  unix_stream_recvmsg
7         0.0054  vfs_ioctl
6         0.0046  IRQ0x0f_interrupt
6         0.0046  __fput
6         0.0046  arch_get_unmapped_area
6         0.0046  cdrom_decode_status
6         0.0046  del_timer
6         0.0046  detach_pid
6         0.0046  direct_create_vi
6         0.0046  do_IRQ
6         0.0046  do_journal_end
6         0.0046  do_readv_writev
6         0.0046  do_sync_read
6         0.0046  end_edge_ioapic_irq
6         0.0046  error_sti
6         0.0046  find_get_page
6         0.0046  get_parents
6         0.0046  get_zeroed_page
6         0.0046  inotify_inode_queue_event
6         0.0046  leaf_cut_from_buffer
6         0.0046  mmput
6         0.0046  put_page
6         0.0046  reiserfs_find_entry
6         0.0046  reiserfs_permission
6         0.0046  release_pages
6         0.0046  sigprocmask
6         0.0046  sys_munmap
6         0.0046  sys_write
6         0.0046  update_atime
5         0.0038  __brelse
5         0.0038  __rb_rotate_right
5         0.0038  as_insert_request
5         0.0038  copy_user_generic
5         0.0038  cp_new_stat
5         0.0038  current_fs_time
5         0.0038  default_wake_function
5         0.0038  do_ioctl
5         0.0038  do_notify_parent
5         0.0038  free_page_and_swap_cache
5         0.0038  free_pages
5         0.0038  get_neighbors
5         0.0038  getname
5         0.0038  ide_do_request
5         0.0038  indirect_part_size
5         0.0038  input_event
5         0.0038  page_add_anon_rmap
5         0.0038  reiserfs_delete_solid_item
5         0.0038  search_by_entry_key
5         0.0038  split_vma
5         0.0038  sys_fcntl
5         0.0038  sys_getdents64
4         0.0031  SHATransform
4         0.0031  __exit_signal
4         0.0031  __rb_rotate_left
4         0.0031  __unix_find_socket_byname
4         0.0031  _reiserfs_free_block
4         0.0031  account_user_time
4         0.0031  add_save_link
4         0.0031  anon_vma_prepare
4         0.0031  cap_capable
4         0.0031  check_right
4         0.0031  comp_items
4         0.0031  copy_namespace
4         0.0031  copy_thread
4         0.0031  do_group_exit
4         0.0031  do_journal_begin_r
4         0.0031  find_next_zero_bit
4         0.0031  get_task_mm
4         0.0031  gs_change
4         0.0031  inotify_dentry_parent_queue_event
4         0.0031  internal_add_timer
4         0.0031  kprobe_exceptions_notify
4         0.0031  load_elf_binary
4         0.0031  make_le_item_head
4         0.0031  may_open
4         0.0031  mousedev_packet
4         0.0031  poll_initwait
4         0.0031  profile_pc
4         0.0031  pty_chars_in_buffer
4         0.0031  read_chan
4         0.0031  reiserfs_cut_from_item
4         0.0031  reiserfs_set_page_dirty
4         0.0031  release_task
4         0.0031  run_local_timers
4         0.0031  snd_ctl_read
4         0.0031  sys_getppid
4         0.0031  sys_unlink
4         0.0031  sys_writev
4         0.0031  timespec_trunc
4         0.0031  vma_prio_tree_add
4         0.0031  wake_up_process
3         0.0023  __anon_vma_link
3         0.0023  __down_read_trylock
3         0.0023  __ide_set_handler
3         0.0023  __unhash_process
3         0.0023  __vm_enough_memory
3         0.0023  __vm_stat_account
3         0.0023  __wake_up_sync
3         0.0023  ack_edge_ioapic_irq
3         0.0023  can_share_swap_page
3         0.0023  cap_vm_enough_memory
3         0.0023  cdrom_ioctl
3         0.0023  decrement_bcount
3         0.0023  device_not_available
3         0.0023  dma_map_sg
3         0.0023  do_fork
3         0.0023  do_generic_mapping_read
3         0.0023  do_lookup
3         0.0023  drain_array_locked
3         0.0023  error_entry
3         0.0023  exit_intr
3         0.0023  fget_light
3         0.0023  flush_sigqueue
3         0.0023  generic_drop_inode
3         0.0023  generic_fillattr
3         0.0023  get_super
3         0.0023  get_unused_fd
3         0.0023  indirect_create_vi
3         0.0023  inode_update_time
3         0.0023  journal_begin
3         0.0023  leaf_copy_items_entirely
3         0.0023  leaf_insert_into_buf
3         0.0023  leaf_move_items
3         0.0023  math_state_restore
3         0.0023  n_tty_chars_in_buffer
3         0.0023  open_namei
3         0.0023  out_of_line_wait_on_bit_lock
3         0.0023  pathrelse
3         0.0023  pipe_write
3         0.0023  prio_tree_replace
3         0.0023  radix_tree_tag_set
3         0.0023  reiserfs_delete_object
3         0.0023  reiserfs_insert_item
3         0.0023  reiserfs_new_inode
3         0.0023  sd_is_left_mergeable
3         0.0023  smp_apic_timer_interrupt
3         0.0023  sock_aio_read
3         0.0023  sock_def_error_report
3         0.0023  sock_ioctl
3         0.0023  sys_open
3         0.0023  task_timeslice
3         0.0023  unix_shutdown
3         0.0023  vfs_getattr
3         0.0023  vfs_unlink
3         0.0023  wake_up_new_task
2         0.0015  __detach_pid
2         0.0015  __end_that_request_first
2         0.0015  __free_pages
2         0.0015  __kfree_skb
2         0.0015  __set_page_dirty_buffers
2         0.0015  __vma_link
2         0.0015  _make_cpu_key
2         0.0015  alloc_pidmap
2         0.0015  anon_pipe_buf_map
2         0.0015  as_next_request
2         0.0015  as_queue_empty
2         0.0015  ata_input_data
2         0.0015  blkdev_open
2         0.0015  calc_deleted_bytes_number
2         0.0015  can_vma_merge_after
2         0.0015  cdrom_pc_intr
2         0.0015  cdrom_queue_packet_command
2         0.0015  clear_all_dirty_bits
2         0.0015  console_conditional_schedule
2         0.0015  copy_item_head
2         0.0015  copy_semundo
2         0.0015  direntry_check_right
2         0.0015  direntry_is_left_mergeable
2         0.0015  dlci_ioctl_set
2         0.0015  dnotify_parent
2         0.0015  do_balance_mark_leaf_dirty
2         0.0015  do_setitimer
2         0.0015  do_sigaction
2         0.0015  do_sync_write
2         0.0015  end_level_ioapic_irq
2         0.0015  exit_mm
2         0.0015  fb_flashcursor
2         0.0015  filp_close
2         0.0015  find_get_pages
2         0.0015  flush_signal_handlers
2         0.0015  follow_mount
2         0.0015  get_cnode
2         0.0015  get_disk
2         0.0015  get_empty_filp
2         0.0015  get_rfree
2         0.0015  get_unmapped_area
2         0.0015  groups_search
2         0.0015  ide_do_rw_cdrom
2         0.0015  ide_intr
2         0.0015  in_group_p
2         0.0015  indirect_is_left_mergeable
2         0.0015  kernel_recvmsg
2         0.0015  kill_fasync
2         0.0015  make_cpu_key
2         0.0015  memcpy_toiovec
2         0.0015  mousedev_notify_readers
2         0.0015  n_tty_receive_room
2         0.0015  page_add_file_rmap
2         0.0015  page_remove_rmap
2         0.0015  pci_vector_resources
2         0.0015  prepare_for_delete_or_cut
2         0.0015  proc_pid_unhash
2         0.0015  pskb_put
2         0.0015  r5_hash
2         0.0015  radix_tree_tag_clear
2         0.0015  reiserfs_add_entry
2         0.0015  reiserfs_allocate_blocknrs
2         0.0015  reiserfs_commit_page
2         0.0015  reiserfs_do_truncate
2         0.0015  reiserfs_file_release
2         0.0015  reiserfs_in_journal
2         0.0015  reiserfs_rmdir
2         0.0015  release_thread
2         0.0015  rh_report_status
2         0.0015  sched_exit
2         0.0015  sched_fork
2         0.0015  set_page_refs
2         0.0015  show_stat
2         0.0015  shrink_dcache_parent
2         0.0015  sys_arch_prctl
2         0.0015  sys_chdir
2         0.0015  sys_close
2         0.0015  sys_mmap
2         0.0015  sys_rt_sigaction
2         0.0015  sysret_careful
2         0.0015  tasklet_action
2         0.0015  tty_ldisc_deref
2         0.0015  vfs_fstat
2         0.0015  vfs_lstat
2         0.0015  vfs_mkdir
2         0.0015  vfs_readdir
2         0.0015  vfs_rmdir
2         0.0015  wait_for_completion
2         0.0015  worker_thread
2         0.0015  write_chan
1        7.6e-04  IRQ0x01_interrupt
1        7.6e-04  IRQ0x0c_interrupt
1        7.6e-04  SELECT_DRIVE
1        7.6e-04  ___pskb_trim
1        7.6e-04  __add_entropy_words
1        7.6e-04  __block_prepare_write
1        7.6e-04  __block_write_full_page
1        7.6e-04  __clear_user
1        7.6e-04  __do_page_cache_readahead
1        7.6e-04  __elv_add_request
1        7.6e-04  __freed_request
1        7.6e-04  __generic_file_aio_read
1        7.6e-04  __get_xa_root
1        7.6e-04  __getblk_slow
1        7.6e-04  __kill_fasync
1        7.6e-04  __mark_inode_dirty
1        7.6e-04  __set_page_dirty_nobuffers
1        7.6e-04  __vma_link_rb
1        7.6e-04  add_timer_randomness
1        7.6e-04  anon_pipe_buf_release
1        7.6e-04  arch_unmap_area
1        7.6e-04  as_add_arq_hash
1        7.6e-04  as_add_arq_rb
1        7.6e-04  as_antic_stop
1        7.6e-04  as_merge
1        7.6e-04  atapi_output_bytes
1        7.6e-04  atkbd_event
1        7.6e-04  bdget
1        7.6e-04  bio_endio
1        7.6e-04  blk_get_queue
1        7.6e-04  blkdev_ioctl
1        7.6e-04  block_ioctl
1        7.6e-04  blockable_page_cache_readahead
1        7.6e-04  can_dirty
1        7.6e-04  cascade
1        7.6e-04  cdrom_check_status
1        7.6e-04  cdrom_do_pc_continuation
1        7.6e-04  cdrom_end_request
1        7.6e-04  cdrom_media_changed
1        7.6e-04  cdrom_read_toc
1        7.6e-04  check_disk_change
1        7.6e-04  check_unthrottle
1        7.6e-04  clear_inode
1        7.6e-04  clear_page_dirty_for_io
1        7.6e-04  complete
1        7.6e-04  con_chars_in_buffer
1        7.6e-04  cond_resched_lock
1        7.6e-04  console_callback
1        7.6e-04  copy_files
1        7.6e-04  copy_strings
1        7.6e-04  cursor_timer_handler
1        7.6e-04  d_instantiate
1        7.6e-04  dcache_dir_open
1        7.6e-04  decrement_counters_in_path
1        7.6e-04  delayed_work_timer_fn
1        7.6e-04  destroy_context
1        7.6e-04  dnotify_flush
1        7.6e-04  do_execve
1        7.6e-04  do_gettimeoffset_tsc
1        7.6e-04  do_mremap
1        7.6e-04  do_pipe
1        7.6e-04  do_posix_clock_monotonic_gettime
1        7.6e-04  do_posix_clock_monotonic_gettime_parts
1        7.6e-04  end_bio_bh_io_sync
1        7.6e-04  end_buffer_write_sync
1        7.6e-04  fd_install
1        7.6e-04  file_read_actor
1        7.6e-04  filemap_fdatawrite
1        7.6e-04  filldir64
1        7.6e-04  filp_open
1        7.6e-04  find_first_zero_bit
1        7.6e-04  find_mergeable_anon_vma
1        7.6e-04  finish_wait
1        7.6e-04  flush_old_exec
1        7.6e-04  free_pipe_info
1        7.6e-04  generic_file_mmap
1        7.6e-04  get_empty_nodes
1        7.6e-04  get_far_parent
1        7.6e-04  get_index
1        7.6e-04  get_request
1        7.6e-04  get_third_component
1        7.6e-04  i8042_timer_func
1        7.6e-04  ide_build_sglist
1        7.6e-04  ide_cdrom_check_media_change_real
1        7.6e-04  ide_cdrom_prep_fn
1        7.6e-04  ide_do_drive_cmd
1        7.6e-04  ide_do_rw_disk
1        7.6e-04  ide_end_request
1        7.6e-04  ide_insw
1        7.6e-04  ide_outl
1        7.6e-04  ide_wait_stat
1        7.6e-04  iget5_locked
1        7.6e-04  init_cdrom_command
1        7.6e-04  init_once
1        7.6e-04  init_tb_struct
1        7.6e-04  inode_add_bytes
1        7.6e-04  inode_has_buffers
1        7.6e-04  inotify_inode_is_dead
1        7.6e-04  int_restore_rest
1        7.6e-04  internal_delete_pointers_items
1        7.6e-04  iput
1        7.6e-04  is_leaf_removable
1        7.6e-04  kernel_read
1        7.6e-04  keyed_hash
1        7.6e-04  kill_bdev
1        7.6e-04  kmem_freepages
1        7.6e-04  kthread_should_stop
1        7.6e-04  leaf_copy_boundary_item
1        7.6e-04  leaf_delete_items
1        7.6e-04  load_elf_interp
1        7.6e-04  locks_remove_posix
1        7.6e-04  lookup_mnt
1        7.6e-04  lru_add_drain
1        7.6e-04  make_empty_dir_item
1        7.6e-04  mm_alloc
1        7.6e-04  mm_release
1        7.6e-04  mousedev_poll
1        7.6e-04  mpage_writepages
1        7.6e-04  n_tty_ioctl
1        7.6e-04  n_tty_receive_buf
1        7.6e-04  new_inode
1        7.6e-04  path_release
1        7.6e-04  pipe_read
1        7.6e-04  pipe_wait
1        7.6e-04  prepare_to_copy
1        7.6e-04  prio_tree_remove
1        7.6e-04  pty_write_room
1        7.6e-04  radix_tree_gang_lookup_tag
1        7.6e-04  reiserfs_async_progress_wait
1        7.6e-04  reiserfs_cache_default_acl
1        7.6e-04  reiserfs_discard_all_prealloc
1        7.6e-04  reiserfs_end_ordered_io
1        7.6e-04  reiserfs_file_write
1        7.6e-04  reiserfs_get_block
1        7.6e-04  reiserfs_get_unused_objectid
1        7.6e-04  reiserfs_invalidatepage
1        7.6e-04  reiserfs_lookup
1        7.6e-04  reiserfs_mkdir
1        7.6e-04  reiserfs_paste_into_item
1        7.6e-04  reiserfs_release_objectid
1        7.6e-04  reiserfs_unmap_buffer
1        7.6e-04  reiserfs_update_inode_transaction
1        7.6e-04  remove_save_link
1        7.6e-04  retint_check
1        7.6e-04  scan_bitmap_block
1        7.6e-04  sd_check_left
1        7.6e-04  seq_lseek
1        7.6e-04  serio_interrupt
1        7.6e-04  set_fs_pwd
1        7.6e-04  skb_clone
1        7.6e-04  skb_copy_and_csum_dev
1        7.6e-04  skb_copy_bits
1        7.6e-04  skb_queue_purge
1        7.6e-04  sock_readv
1        7.6e-04  sock_readv_writev
1        7.6e-04  sock_sendmsg
1        7.6e-04  sock_sendpage
1        7.6e-04  sys_brk
1        7.6e-04  sys_exit_group
1        7.6e-04  sys_mkdir
1        7.6e-04  sys_newfstat
1        7.6e-04  sys_newlstat
1        7.6e-04  sys_rmdir
1        7.6e-04  sys_wait4
1        7.6e-04  tty_check_change
1        7.6e-04  tty_ioctl
1        7.6e-04  tty_ldisc_ref_wait
1        7.6e-04  tty_write
1        7.6e-04  unix_dgram_sendmsg
1        7.6e-04  unix_write_space
1        7.6e-04  unlock_page
1        7.6e-04  vfs_rename
1        7.6e-04  vma_link
1        7.6e-04  vma_prio_tree_remove


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