** Description changed:
Binary package hint: evolution-data-server
- On login evolution-data-server uses 100% cpu. This is gutsy with all
- updates (upgraded from feisty).
+ <PLEASE> -- do not add simple "me too" comments, they do not help: we
+ already *know* this is a problem, and these comments only make it more
+ difficult to find potentially important data in the bug. If you have the
+ knowledge and time to help debug, your help *is* appreciated. Go to
+ #ubuntu-bugs in irc.freenode.net, and discuss it there. I am sure that
+ any one of us will be more than happy to get on with this ;-)</PLEASE>
- $ ps ax |grep evolution-data-server
- 6522 ? RNl 8:45 /usr/lib/evolution/evolution-data-server-1.12
--oaf-activate-iid=OAFIID:GNOME_Evolution_DataServer_CalFactory:1.2
--oaf-ior-fd=24
+ On login evolution-data-server uses 100% cpu. At login evolution-alarm-
+ notify is auto-started by gnome-session; e-a-n kicks in E-D-S and, for
+ yet an unknown reason, E-D-S enters a loop. strace on E-D-S shows a
+ sequence of very fast poll() calls; a strace on e-a-n shows e-a-n
+ waiting for an event. This seems to happen on some machines, but not
+ all. It affects both Evolution users and non-users -- E-D-S is still
+ installed under Gnome even if you do not use the Evolution mail client.
- $ strace -p 6522
- poll([{fd=5, events=POLLIN}, {fd=7, events=POLLIN|POLLPRI}], 2, 0) = 0
- poll([{fd=5, events=POLLIN}, {fd=7, events=POLLIN|POLLPRI}], 2, 0) = 0
- ...
+ All symptoms are of a race condition, very early in E-D-S or a library
+ startup. Backtraces are inconclusive, and show slightly different code
+ paths. I cannot reproduce it on my machine (an AMD64 dual-core), no
+ matter what I try.
- $ ls -l /proc/6522/fd
- ...
- l-wx------ 1 egon egon 64 2007-10-11 11:42 4 -> pipe:[20797]
- lr-x------ 1 egon egon 64 2007-10-11 11:42 5 -> pipe:[20798]
- l-wx------ 1 egon egon 64 2007-10-11 11:42 6 -> pipe:[20798]
- ...
+ I would like to know what Linux and hardware architecture, and how many
+ CPUs for those that are *frequently* hit (for example, {linux64, AMD64,
+ 2 CPUs}, meaning I am running linux64 on an AMD64 with two CPUs;
+ {linux32, AMD64, 4 CPUs}, meaning I am running linux32 Intel on an AMD64
+ with 4 CPUs).
- $ sudo lsof |grep 20798
- evolution 6522 egon 5r FIFO 0,6 20798 pipe
- evolution 6522 egon 6w FIFO 0,6 20798 pipe
-
- $ ltrace -p 6522
- --- SIGSTOP (Stopped (signal)) ---
- --- SIGSTOP (Stopped (signal)) ---
- (nothing more)
-
- $ gdb -p 6522
- (gdb) where
- #0 0xb7775c8c in pthread_mutex_unlock ()
- from /lib/tls/i686/cmov/libpthread.so.0
- #1 0xb77f5909 in g_main_loop_run () from /usr/lib/libglib-2.0.so.0
- #2 0xb7956d13 in bonobo_main () from /usr/lib/libbonobo-2.so.0
- #3 0x0804b964 in ?? ()
- #4 0x0804c3ab in ?? ()
- #5 0x00000020 in ?? ()
- #6 0x0804c4c7 in ?? ()
- #7 0x00000000 in ?? ()
- (gdb)
-
- Let me know if you need more information.
-
- Cheers,
- Michael
+ Right now we are considering this as a race very early on session
+ startup, perhaps caused by the current placement of e-a-n on the default
+ session list (with the default priority of 50). I myself still cannot
+ reproduce it, and I wonder if having a dual-CPU machine, and/or linux64,
+ and/or AMD64, makes the race more difficult to happen.
--
[MASTER] E-D-S hangs on login and uses 100% cpu
https://bugs.launchpad.net/bugs/151536
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