Tickets :: [#5341] out of memory error with 9K message mailbox

6.0.0-beta1

7/4/25

Summary	out of memory error with 9K message mailbox
Queue	IMP
Queue Version	HEAD
Type	Enhancement
State	Rejected
Priority	1. Low
Owners	slusarz (at) horde (dot) org
Requester	selsky (at) columbia (dot) edu
Created	05/08/2007 (6632 days ago)
Due
Updated	12/03/2008 (6057 days ago)
Assigned	11/08/2008 (6082 days ago)
Resolved	12/03/2008 (6057 days ago)
Milestone
Patch	No

12/03/2008 06:51:03 AM	Michael Slusarz	Comment #9 State ⇒ Rejected	Reply to this comment
We'll reject it.

11/08/2008 05:26:04 AM	Chuck Hagenbuch	Comment #8 State ⇒ Assigned	Reply to this comment
Now that we've moved away from c-client in HEAD, this should either be rejected or closed.

05/21/2007 10:44:38 PM	Matt Selsky	Comment #7	Reply to this comment
Do you have caching enabled? That would increase memory usage - at the expense of speed of course. Also, how are you sorting this mailbox? No caching. We're using the default sort order for the mailbox. $ grep cache imp/config/conf.php $conf['server']['cache_folders'] = false; $conf['server']['cache_msgbody'] = false; $conf['mboxcache']['use_mboxcache'] = false; The only way you can determine a mailbox slice is if you know the contents of the entire mailbox. i.e., the only way you can tell what messages are on page 2 is if you sort the entire mailbox. Don't see anyway around this. OK.

05/21/2007 10:42:21 PM	Matt Selsky	Comment #6	Reply to this comment
BTW, did you really have a 24 MB memory limit with IMP 3? If I remember correctly, you really couldn't do anything at all in IMP 3 unless you turned memory_limit off completely, let alone set it at 24 MB. You are correct. We have no memory limit for IMP 3. Apache memory usages seems to be around 120MB for 110K messages. Does that sound reasonable?

05/21/2007 10:36:24 PM	Michael Slusarz	Comment #5	Reply to this comment
OK, but IMP 3.x was able to open 100K message mailboxes. And quickly too. BTW, did you really have a 24 MB memory limit with IMP 3? If I remember correctly, you really couldn't do anything at all in IMP 3 unless you turned memory_limit off completely, let alone set it at 24 MB.

05/21/2007 10:33:39 PM	Michael Slusarz	Comment #4	Reply to this comment
OK, but IMP 3.x was able to open 100K message mailboxes. And quickly too. Do you have caching enabled? That would increase memory usage - at the expense of speed of course. Also, how are you sorting this mailbox? btw, I definitely see much slower mailbox accesses in IMP 3.x than 4.x. Not to mention we cache mailbox lists in 4 and we never did this in 3. Why do we need to use so much memory to show the message index? There are only 20 mesage headers on the page... Just curious. The only way you can determine a mailbox slice is if you know the contents of the entire mailbox. i.e., the only way you can tell what messages are on page 2 is if you sort the entire mailbox. Don't see anyway around this.

05/21/2007 07:26:47 PM	Matt Selsky	Comment #3	Reply to this comment
OK, but IMP 3.x was able to open 100K message mailboxes. And quickly too. Why do we need to use so much memory to show the message index? There are only 20 mesage headers on the page... Just curious.

05/20/2007 11:45:38 PM	Michael Slusarz	Comment #2 State ⇒ Stalled	Reply to this comment
24+ megs of memory to view a 9,000 message mailbox seems reasonable to me (t-bird takes up way more than 24 megs to view a mailbox of this size). Don't think we can really do much about this without changing the internal imap processing in c-client.

05/09/2007 07:33:02 AM	Jan Schneider	State ⇒ Assigned Assigned to Michael Slusarz

05/08/2007 11:40:06 PM	Matt Selsky	Comment #1 Priority ⇒ 1. Low State ⇒ New Queue ⇒ IMP Summary ⇒ out of memory error with 9K message mailbox Type ⇒ Enhancement	Reply to this comment
I think Michael wanted to be notified about memory errors when devs use 24M memory... When I try to open a 9K message mailbox (sent-mail), I get the following error: Fatal error: Allowed memory size of 25165824 bytes exhausted (tried to allocate 1572865 bytes) in /etc/httpd/htdocs/horde/imp/lib/Mailbox.php on line 689 php.ini has these memory settings: memory_limit = 24M