322343 - 100% cpu hang when closing TB

Status: RESOLVED WORKSFORME

(Thunderbird :: General, defect)

Description

[Fernando Hartmann]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8) Gecko/20051111 Firefox/1.5
Build Identifier: version 1.5 (20051201)

   Some times when I close TB it closes all windows, but, if I open the task manager it process is running and using 100% of cpu.
   It don't happen allways.
   I can't determine what I made to generating this problem.
   

Reproducible: Sometimes

Steps to Reproduce:
1. Use TB.
2. Close it.
3. Open he task manager and see the provess eating the cpu.

Actual Results:  
Some times the process don't end, and the cpu is 100% used by it.

Expected Results:  
TB task end.

I'm ussing one Imap account and many RSS feeds and and news groups accont too.
It starded to happen in TB 1.5 RC1.

Comment 1

[Fernando Hartmann]

   This happens to me frequently, and seems that happens always when I leave my computer turned on a lot of time ( more than 24 hs) with the TB running, (checking my imap accounts and my RSS feeds).
   Today with some free time , I decided to wait and let TB running using 100% of my cpu time, and after 15 minutes they exited !
   What is TB doing ?
   Any ideas ?

Comment 2

[Kevin Boyd]

It happens to me as well, if I leave thunderbird open for more than a day it takes upwards of five minutes of 100% usage before the background process dies. This is on my Sempron-M 2800+ CPU under Windows XP SP2 with 512MB RAM. I'm subscribed to over 20 RSS feeds, and I think that the RSS is what's causing the problem - if I mark them all as read, exit, observe the 100% bug, kill the process, and start thunderbird again - it downloads all-new never-seen-before RSS entries! And lots of them! What gives? I don't think that AVG scans incoming RSS feeds, but I could be wrong.

My RSS folder is 119MB in size. I have some individual feedboxes that are over 10MB and 20MB in size (Gizmodo+BoingBoing and CNN, respectively).  My feeds.rdf file is about 20kb, and the feeditems.rdf file is about 205kb.

If I leave Thunderbird open for, say, 4 hours and close it, the problem is much less severe, but still seems noticeable. It only lasts for 20-30 seconds, though.

Comment 3

[Guy Soffer]

Happens to me on WIN 2000 and also happens on WINNT too.

Comment 4

[Kevin Boyd]

Attachment: The RSS feeds for which this issue seems to be occuring.

This .rdf file contains my news & blogs feed datastore; the reason why I suspect RSS as the root of this bug is because when I kill Thunderbird after it gets stuck at 100% usage on exit, it downloads all new never-before-seen RSS items for these feeds on the next launch.

I rather suspect that the code to go out and query these sites is getting hung up somehow.

Comment 5

[test]

Seems to happen also on MacOS, see 324325

Comment 6

[rudy]

Happens to me as well... I can always tell when this is going to happen, too, because Thunderbird starts to use consistently 20% CPU while it's still open. (I know it's doing this because my laptop CPU fan starts up all of a sudden.)

Once that has happened, guaranteed that when you close Thunderbird, it will go to this using 100% CPU. I have tried canceling all my RSS subscriptions and will see if that helps. Also I use IMAP, with a lot of messages & folders.

Comment 7

[Andrew Ziem]

I have the same symptoms with TB 1.5.0.8 on Linux.  My setup is one IMAP, a few POPs, and several RSS accounts.  

If I remember correctly, once I killed the process and it destroyed by address book.

Comment 8

[Andrew Ziem]

Here's gdb attached to the TB 1.5.0.8 process

(gdb) bt
#0  0x00a055ea in strcmp () from /lib/libc.so.6
#1  0xb7be8666 in PREF_UnregisterCallback (
    pref_node=0xafc2b10 "network.autodial-helper.enabled",
    callback=0xb7be3b42 <NotifyObserver>, instance_data=0xb0979e0)
    at prefapi.cpp:833
#2  0xb7be30aa in nsPrefBranch::freeObserverList (this=0x944a2e0)
    at nsPrefBranch.cpp:786
#3  0xb7be3154 in nsPrefBranch::Observe (this=0x944a2e0, aSubject=0x92dc38c,
    aTopic=0xb7eb3a14 "xpcom-shutdown", someData=0x0) at nsPrefBranch.cpp:727
#4  0xb7e63b96 in nsObserverService::NotifyObservers (this=0x9334670,
    aSubject=0x92dc38c, aTopic=0xb7eb3a14 "xpcom-shutdown", someData=0x0)
    at nsObserverService.cpp:233
#5  0xb7e5aa3c in NS_ShutdownXPCOM_P (servMgr=0x92dc38c) at nsXPComInit.cpp:797
#6  0x0804bf78 in ~ScopedXPCOMStartup (this=0xbf82c350) at nsAppRunner.cpp:553
#7  0x0804f71e in XRE_main (argc=3, argv=0xbf82c5b4, aAppData=0x80636e0)
    at nsAppRunner.cpp:2410
#8  0x0804afb5 in main (argc=3, argv=0xbf82c5b4) at nsMailApp.cpp:62
#9  0x009b14e4 in __libc_start_main () from /lib/libc.so.6
#10 0x0804af11 in _start ()
(gdb) s
Single stepping until exit from function strcmp,
which has no line number information.
[Switching to Thread -1209985328 (LWP 13662)]
PREF_UnregisterCallback (
    pref_node=0xafc2b10 "network.autodial-helper.enabled",
    callback=0xb7be3b42 <NotifyObserver>, instance_data=0xb0979e0)
    at prefapi.cpp:850
850                 node = node->next;
(gdb) s
831         while (node != NULL)
(gdb) s
833             if ( strcmp(node->domain, pref_node) == 0 &&
(gdb) s
850                 node = node->next;
(gdb) s
831         while (node != NULL)
(gdb) s
833             if ( strcmp(node->domain, pref_node) == 0 &&
(gdb) s
850                 node = node->next;
(gdb) s
831         while (node != NULL)

Comment 9

[Daniel Pisanec]

happens here too. Unfortunately I also cannot reproduce it, but it happens also when after a few minutes of Thunderbird running. While that time I checked for E-Mails (just pop3), RSS and news groups. I think it has to do something with RSS, because when I use it away from home (laptop), I cannot check my news groups, but the CPU usage of TB raises to 100% when closing TB. 

Comment 10

[Rotis]

This bug exists on MacOSX as well. There is Bug 324325 reported about the same problem.

When I run Thunderbird for a few days (POP-Mail, RSS) and quit it, it closes the main windows but the process stays open for several minutes and takes 100 % CPU.

My system: TB 1.5.0.10 on MacOSX 10.4.9 on iBook PPC G4 with 1.42 GHz and 1.5 GB RAM

Comment 11

[Wayne Mery (:wsmwk)]

what happens with the soon to be released TB 2? http://ftp.mozilla.org/pub/mozilla.org/thunderbird/nightly/latest-mozilla1.8/

Comment 12

[Wayne Mery (:wsmwk)]

Do you all still see this when using v2? 

I'm seeing this rather consistently with version 3.0a1pre (2007100604). I haven't ruled out that it may be an extension.

Comment 13

[Wayne Mery (:wsmwk)]

Adam, did you have a specific (RSS?) bug in mind for the dupe?

Comment 14

[Wayne Mery (:wsmwk)]

If you commented here, did the problem go away with version 2?
Reporter appears to be gone. Maybe rotis too.

Thorsten can you reproduce with version 2?

Comment 15

[Andrew Ziem]

I haven't noticed the problem for a while.  I am on TB 2.0.0.12 now.

Comment 16

[Fernando Hartmann]

I'm back, the problem appears to be solved to me.
I'm using TB 2.0.0.12.

Comment 17

[Magnus Melin [:mkmelin]]

->WFM then