Bug 233782

Summary:	suddenly kmail is very slow, takes all i/o-resources without interaction by the user
Product:	[Applications] kmail	Reporter:	Peer Heinlein <p.heinlein>
Component:	general	Assignee:	kdepim bugs <kdepim-bugs>
Status:	RESOLVED DUPLICATE
Severity:	normal	CC:	bjoern
Priority:	NOR
Version:	1.12.4
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Have a look ath the red markeds period: That was kmail

Description Peer Heinlein 2010-04-08 23:43:43 UTC

Version:           1.12.4 (using 4.3.5 (KDE 4.3.5) "release 0", openSUSE 11.2)
Compiler:          gcc
OS:                Linux (i686) release 2.6.31.12-0.2-desktop

Two days ago kmail startet to be sometimes (!) *very* slow. Kmail ist working very much on the harddisk, (top: 80-90% CPU, 30-35% Wait I/O) and I can't detect what he's doing. -For sure it's not me, because working in that time isn't possible any more (Open a reply takes round about 5 to 20 seconds, doing some drag&drop-operations is quite impossible). 

After several minutes everything's fine and everything is working as fast as always. I haven't done anything during that time.

Working with kmail isn't possible any more (without becoming very angry).

What I have done before: Maybe I reached the limit of 256 folders per IMAP-account, but at the moment I habe 240 folders and the problem still exixts. And I added a LDAP-resource in kontact adressbook. I deleted this resource -- it's still slow. 

What didn't help: Forgetting the whole lokal IMAP-stuff and rebuilding the lokal IMAP-storage. At first it looked good, but after some time kmail became slow again.

I know this bug-report is very unspecific. What kind of informations do you need and how can I gather them?

Comment 1 Peer Heinlein 2010-04-08 23:45:28 UTC

Created attachment 42604 [details]
Have a look ath the red markeds period: That was kmail

Comment 2 Peer Heinlein 2010-04-08 23:48:31 UTC

Okay, some more details:

I'm using that installation on my laptop for 4 months now. It worked always perfect. It's running on a crypted ext4-filesystem. But I can't detect problems with the filesystem and its performance: All applications are running fast and normal.

Comment 3 Björn Ruberg 2010-04-14 23:12:39 UTC

I think that is unneeded index regeneration

*** This bug has been marked as a duplicate of bug 166653 ***