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Re: Terminally slow (75 seconds) on some steps


> > On Tue, 05 Aug 2003 01:20:26 -0400 Andrew Cagney <ac131313@redhat.com>
> > wrote:
> > 
> >> Ok, during library load, GDB has to constantly start/stop the target
> >> and that slows things down.  Would you be able to oprofile your
> entire 
> >> system so its possible to see exactly where that 11 seconds goes?

OK, I have here running oprofile. I am not sure what sort of report do you
need. I can copy-n-paste reports to list or publish larger files on my
website. Here go some simple statistics: run without gdb[1], run inside
gdb[2], symbol details from gdb run[3]. Oprofile cannot do call graphs, I
hope you get something out of these numbers.

[1]

     2371 30.3352 vmlinux
      736  9.4166 XFree86
      729  9.3270 ld-2.3.1.so
      595  7.6126 libwx_based-2.5.so.0.0.0
      487  6.2308 libwx_gtkd_core-2.5.so.0.0.0
      471  6.0261 libc-2.3.1.so
      454  5.8086 M
...

[2]

    10567 37.2826 vmlinux
     8537 30.1203 gdb
     4402 15.5312 libc-2.3.1.so
      786  2.7732 ld-2.3.1.so
      622  2.1945 XFree86
      511  1.8029 libwx_based-2.5.so.0.0.0
      455  1.6053 M
...

[3]

00000000 4402     15.5317     libc-2.3.1.so            (no symbols)
080e40e0 1134      4.0011     gdb                      bcache
c01221cc 1011      3.5671     vmlinux                  file_read_actor
c01dc330 955       3.3696     vmlinux                  __generic_copy_to_user
c011f6b8 663       2.3393     vmlinux                  do_anonymous_page
00000000 622       2.1946     XFree86                  (no symbols)
08134b74 574       2.0253     gdb                      read_partial_die
c0118f2c 516       1.8206     vmlinux                  access_process_vm
080e3fc0 459       1.6195     gdb                      hash
00000000 384       1.3549     libglib-1.2.so.0.0.10    (no symbols)
c0105370 369       1.3020     vmlinux                  default_idle
081b7f7c 360       1.2702     gdb                      htab_find_slot_with_hash
08134fe4 307       1.0832     gdb                      read_attribute_value
081b8218 292       1.0303     gdb                      htab_hash_string
c0135408 292       1.0303     vmlinux                  link_path_walk
c0106d54 283       0.9985     vmlinux                  system_call
c0147650 273       0.9632     vmlinux                  proc_lookup
081351bc 246       0.8680     gdb                      read_attribute
00006e48 244       0.8609     ld-2.3.1.so              do_lookup
0813195c 240       0.8468     gdb                      add_partial_symbol
08135560 237       0.8362     gdb                      read_unsigned_leb128
c0126294 231       0.8150     vmlinux                  kmem_cache_free
00000000 226       0.7974     libX11.so.6.2            (no symbols)
00007042 215       0.7586     ld-2.3.1.so              do_lookup_versioned
c012da38 209       0.7374     vmlinux                  fput
c0126100 208       0.7339     vmlinux                  kmem_cache_alloc
081354e4 204       0.7198     gdb                      read_indirect_string
c0127834 200       0.7057     vmlinux                  rmqueue
0000dc18 188       0.6633     ld-2.3.1.so              strcmp
c01397f4 185       0.6527     vmlinux                  do_select
00002210 168       0.5928     unix.o                   unix_poll
c013e84c 164       0.5786     vmlinux                  clean_inode
00000000 160       0.5645     libgdk-1.2.so.0.9.1      (no symbols)
080a43f0 159       0.5610     gdb                      symbol_set_names
c0127640 155       0.5469     vmlinux                  __free_pages_ok
081568b4 147       0.5187     gdb                      bfd_getl32
080aa8b0 139       0.4904     gdb                      add_psymbol_to_list
c0135f24 138       0.4869     vmlinux                  open_namei
c010fbe4 134       0.4728     vmlinux                  schedule
00000000 131       0.4622     libgtk-1.2.so.0.9.1      (no symbols)
c013cc00 120       0.4234     vmlinux                  dput
c013d204 117       0.4128     vmlinux                  d_alloc
c013d3cc 110       0.3881     vmlinux                  d_lookup
08134b30 102       0.3599     gdb                      dwarf2_lookup_abbrev
081b08e8 101       0.3564     gdb                      demangle_prefix
08131800 97        0.3422     gdb                      scan_partial_symbols
c012db08 97        0.3422     vmlinux                  fget
080fbba0 96        0.3387     gdb                      xmmalloc
080fd028 93        0.3281     gdb                      strcmp_iw_ordered
c0146fd0 93        0.3281     vmlinux                  proc_pid_lookup
c013ece0 92        0.3246     vmlinux                  iput
00000000 91        0.3211     librep.so.9.2.2          (no symbols)
c0146d44 90        0.3175     vmlinux                  proc_base_lookup
c019738c 89        0.3140     vmlinux                  sock_poll
c011eb28 87        0.3070     vmlinux                  get_user_pages
080fb19c 82        0.2893     gdb                      do_my_cleanups
000098c3 82        0.2893     libpthread-0.10.so       __pthread_alt_unlock
c01464f0 80        0.2823     vmlinux                  mem_read
000096bf 78        0.2752     libpthread-0.10.so       __pthread_alt_lock
081b71e0 75        0.2646     gdb                      dyn_string_resize
081b7510 73        0.2576     gdb                      dyn_string_append_char
c01460a4 72        0.2540     vmlinux                  may_ptrace_attach
080de514 70        0.2470     gdb                      target_xfer_memory
08161014 70        0.2470     gdb                      bfd_elf32_slurp_symbol_table
c0110cb0 70        0.2470     vmlinux                  add_wait_queue
...



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