|Subject:||Re: Redisplay: NS port, high CPU load|
|Date:||Wed, 8 Jun 2016 09:50:30 +0200|
I am and users are experiencing regular high CPU load with the NS port, which started some time around late 2015, but according to users co-incided with an OS upgrade, too. I tried rolling back changes, with limited success: it does seem though that very recently, the problem has become much worse.
Usually, Emacs goes into 100% CPU load, or sometimes high load. What invariably shows up in my process samples is NSMenu _sidebandUpdate* (no idea what that does), within ns_upgrade_menubar. The attachment (sorry, could not export to text) shows an example.
I’m getting the spinning beachball sometimes when entering a minibuffer for a command.
I would like to fix this problem, but have been unsuccessful in tracing it down. As you can see, we’re spending a lot of time in redisplay.
Is redisplay slow, or is it called again and again?
Advice would be appreciated. (Yes, this is with Aquamacs, and I can’t tell if the problem exists in GNU Emacs as it probably interacts with some configuration.)
Date/Time: 2016-06-08 15:32:29.059 +1000
Launch Time: 2016-06-08 13:51:42.364 +1000
OS Version: Mac OS X 10.11.4 (15E65)
Report Version: 7
Analysis Tool: /usr/bin/sample
2484 Thread_453834: Main Thread DispatchQueue_<multiple>
+ 2417 start (in libdyld.dylib) + 1 [0x7fff892d35ad]
+ ! 2417 main () + 5602 [0x1000c3602] emacs.c:1606
+ ! 2417 Frecursive_edit () + 218 [0x1000c48ea] keyboard.c:755
+ ! 2417 recursive_edit_1 () + 101 [0x1000c46c5] keyboard.c:684
+ ! 2417 command_loop () + 158 [0x1000c47ae] keyboard.c:1078
+ ! 2417 internal_catch () + 54 [0x10013f6b6] eval.c:1074
+ ! 2417 command_loop_2 () + 48 [0x1000d45c0] keyboard.c:1099
+ ! 2417 internal_condition_case () + 70 [0x10013fb46] eval.c:1309
+ ! 2417 command_loop_1 () + 1154 [0x1000c5552] keyboard.c:1357
+ ! 2417 read_key_sequence () + 1959 [0x1000c6e17] keyboard.c:9101
+ ! 2417 read_char () + 5783 [0x1000ca407] keyboard.c:2706
+ ! 2417 sit_for () + 261 [0x100008515] dispnew.c:5762
+ ! 1694 wait_reading_process_output () + 1218 [0x100183482] process.c:4609
+ ! : 1694 redisplay_preserve_echo_area () + 44 [0x100028dfc] xdisp.c:14286
+ ! : 970 redisplay_internal () + 2034 [0x100027282] xdisp.c:11850
+ ! : | 962 update_menu_bar () + 450 [0x10004c9b2] xdisp.c:11960
+ ! : | + 869 ns_update_menubar () + 479 [0x1001cba6f] nsmenu.m:139
+ ! : | + ! 868 -[NSApplication setMainMenu:] (in AppKit) + 1584 [0x7fff8e8dc2c0]
+ ! : | + ! : 868 -[NSMenu _addSidebandMenuUpdaterForRoles:token:priority:handler:] (in AppKit) + 229 [0x7fff8e8dc912]
+ ! : | + ! : 868 -[NSMenu _sidebandUpdaterRoles] (in AppKit) + 41,47,... [0x7fff8e8dca4d,0x7fff8e8dca53,...]
+ ! : | + ! 1 -[NSApplication setMainMenu:] (in AppKit) + 655 [0x7fff8e8dbf1f]
+ ! : | + ! 1 objc_msgSend (in libobjc.A.dylib) + 26 [0x7fff8dbc54da]
+ ! : | + 57 ns_update_menubar () + 1577 [0x1001cbeb9] nsmenu.m:454
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