Bug 665309 - cyrus imapd performance low after upgrade from fedora 12
Summary: cyrus imapd performance low after upgrade from fedora 12
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Fedora
Classification: Fedora
Component: cyrus-imapd
Version: 13
Hardware: All
OS: Linux
low
high
Target Milestone: ---
Assignee: Michal Hlavinka
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2010-12-23 08:07 UTC by Damijan
Modified: 2011-02-14 20:27 UTC (History)
3 users (show)

Fixed In Version: cyrus-imapd-2.3.16-7.fc14
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-02-14 20:25:51 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Damijan 2010-12-23 08:07:05 UTC
Description of problem:

Cyrus-imapd performace for large folders (5000+ mails) degraded after upgrade from fedora 12 to f13/f14


Version-Release number of selected component (if applicable):


How reproducible:

Install fresh f13 or f14 or upgrade from f12.
Populate mailbox folder (e.g. INBOX) with large number of messages (5000+)
Connect from webmail client (tested with squirrelmail). Large delays noticed.
Same configuration works fine with f12.

CLI top command shows 99%wait during loading messages to squirelmail.
Adding more memory doesn't help.

No mail proxy used.

imapd auth  with saslauthd with both PAM and  LDAP mech.

Same for x686 and 64_x86

Steps to Reproduce:
1.
2.
3.
  
Actual results:


Expected results:


Additional info:

Comment 1 Enrico Scholz 2011-01-19 11:30:24 UTC
that's probably due to http://pkgs.fedoraproject.org/gitweb/?p=cyrus-imapd.git;a=commitdiff;h=24cb0a917604adfb485475ac46ac49b1dce9f44b

-  if [ $(find $i -maxdepth 0 -printf %%F) = "ext2" ]; then
-    chattr -R +S $i 2>/dev/null
-  fi
+  chattr -R +S $i 2>/dev/null ||:

Comment 2 Michal Hlavinka 2011-01-19 13:46:18 UTC
> -  if [ $(find $i -maxdepth 0 -printf %%F) = "ext2" ]; then
> -    chattr -R +S $i 2>/dev/null
> -  fi
> +  chattr -R +S $i 2>/dev/null ||:

yes, that's probably the cause. Btw, do you see this issue too?

Enrico, Damijan: what filesystem do you use for /var ?

Damijan: You can verify this by using:


chattr -R -S /var/lib/imap/{user,quota} /var/spool/imap

Comment 3 Enrico Scholz 2011-01-20 14:20:02 UTC
yes; I saw this issue too (on an ext3 fs).

Comment 4 Michal Hlavinka 2011-01-21 09:54:45 UTC
When looking into documentation, cyrus-imapd recommends sync io only for ext2, so I've corrected spec file. Because this will only "not set" it, but not remove, you will probably have to manually unset it using:

chattr -R -S /var/lib/imap/{user,quota} /var/spool/imap

Comment 5 Damijan 2011-01-21 10:01:39 UTC
Tried. Works.
Thanks!!

Comment 6 Fedora Update System 2011-01-21 10:25:21 UTC
cyrus-imapd-2.3.16-7.fc14 has been submitted as an update for Fedora 14.
https://admin.fedoraproject.org/updates/cyrus-imapd-2.3.16-7.fc14

Comment 7 Fedora Update System 2011-01-21 10:25:29 UTC
cyrus-imapd-2.3.16-4.fc13 has been submitted as an update for Fedora 13.
https://admin.fedoraproject.org/updates/cyrus-imapd-2.3.16-4.fc13

Comment 8 Fedora Update System 2011-01-21 22:58:44 UTC
cyrus-imapd-2.3.16-7.fc14 has been pushed to the Fedora 14 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update cyrus-imapd'.  You can provide feedback for this update here: https://admin.fedoraproject.org/updates/cyrus-imapd-2.3.16-7.fc14

Comment 9 Fedora Update System 2011-02-14 20:25:46 UTC
cyrus-imapd-2.3.16-4.fc13 has been pushed to the Fedora 13 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 10 Fedora Update System 2011-02-14 20:27:01 UTC
cyrus-imapd-2.3.16-7.fc14 has been pushed to the Fedora 14 stable repository.  If problems still persist, please make note of it in this bug report.


Note You need to log in before you can comment on or make changes to this bug.