Hi.
I played a little with the kernel trace tool and discovered that
Emacs quite regularly calls system functions although it's not even
active. I'm not sure whether this is results from the Carbon port or
whether this is an artifact of standard Emacs. However, /usr/bin/emacs
doesn't show this behavior:
As you can see within just three seconds, Emacs executed 54 system
calls. I attached the traces which show you where these calls
originate.
It this is a result of the Carbon implementation, it should be fixed,
because Emacs uses a lot of resources and battery over time without
doing anything.
-------
$ time dtrace -n syscall:::entry'/execname== "Emacs"/[EMAIL PROTECTED]()] =
count()}'
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x46
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending+0x1f
Emacs`select_and_poll_event+0x35
Emacs`sys_select+0x733
Emacs`wait_reading_process_output+0x7a7
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
6
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x46
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending+0x1f
Emacs`wait_reading_process_output+0x60c
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x46
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending_run_timers+0x2c
Emacs`wait_reading_process_output+0x89a
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x58
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending+0x1f
Emacs`select_and_poll_event+0x35
Emacs`sys_select+0x733
Emacs`wait_reading_process_output+0x7a7
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
6
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x58
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending+0x1f
Emacs`wait_reading_process_output+0x60c
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
libSystem.B.dylib`sigprocmask+0xa
Emacs`gobble_input+0x58
Emacs`get_input_pending+0x5e
Emacs`detect_input_pending_run_timers+0x2c
Emacs`wait_reading_process_output+0x89a
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
libSystem.B.dylib`setitimer+0xa
Emacs`start_polling+0x32
Emacs`redisplay_internal+0x11d6
Emacs`redisplay_preserve_echo_area+0x33
Emacs`detect_input_pending_run_timers+0x43
Emacs`wait_reading_process_output+0x89a
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
libSystem.B.dylib`__sigaction+0xa
Emacs`sys_signal+0x33
Emacs`turn_on_atimers+0x29
Emacs`start_polling+0x32
Emacs`redisplay_internal+0x11d6
Emacs`redisplay_preserve_echo_area+0x33
Emacs`detect_input_pending_run_timers+0x43
Emacs`wait_reading_process_output+0x89a
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
6
libSystem.B.dylib`select$DARWIN_EXTSN$NOCANCEL+0xa
Emacs`select_and_poll_event+0xa2
Emacs`sys_select+0x733
Emacs`wait_reading_process_output+0x7a7
Emacs`sit_for+0x124
Emacs`read_char+0xe90
Emacs`read_key_sequence+0x64b
Emacs`command_loop_1+0x378
Emacs`internal_condition_case+0xea
Emacs`command_loop_2+0x44
Emacs`internal_catch+0xab
Emacs`command_loop+0x76
Emacs`recursive_edit_1+0x8c
Emacs`Frecursive_edit+0xad
Emacs`main+0x10e6
Emacs`_start+0xd8
Emacs`start+0x29
0x3
6
real 0m3.328s
user 0m0.149s
sys 0m0.138s
--~--~---------~--~----~------------~-------~--~----~
Carbon Emacs User Group
http://groups.google.com/group/carbon-emacs?hl=en
-~----------~----~----~----~------~----~------~--~---
