<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:garamond,new york,times,serif;font-size:10pt"><div>After login imapd take 100% cpu<br></div><div style="font-family: garamond,new york,times,serif; font-size: 10pt;"><br><div style="font-family: arial,helvetica,sans-serif; font-size: 13px;"><font size="2" face="Tahoma"><hr size="1"><b><span style="font-weight: bold;">Da:</span></b> Ingo Steuwer <steuwer@univention.de><br><b><span style="font-weight: bold;">A:</span></b> kolab-users@kolab.org<br><b><span style="font-weight: bold;">Cc:</span></b> Gabriele Di Giambelardini <gabriele_d_g@yahoo.it><br><b><span style="font-weight: bold;">Inviato:</span></b> Venerdì 24 ottobre 2008, 12:20:22<br><b><span style="font-weight: bold;">Oggetto:</span></b> Re: kolab 2.2<br></font><br>Hello,<br><br>Am Freitag, 24. Oktober 2008 schrieb Gabriele Di Giambelardini:<br>> Ok after many many tests, the
imapd service use all the CPU only when an<br>> user use the horde webmail.... Any solution??<br><br>during login or the whole session? Is it connected with a special use-case?<br><br>You might enable user-specific logfiles in cyrus or increase the loglevel to <br>get an impression of what imapd "does".<br><br>Regards<br>Ingo Steuwer<br><br>><br>> ________________________________<br>> Da: Gabriele Di Giambelardini <<a ymailto="mailto:gabriele_d_g@yahoo.it" href="mailto:gabriele_d_g@yahoo.it">gabriele_d_g@yahoo.it</a>><br>> A: Ingo Steuwer <<a ymailto="mailto:steuwer@univention.de" href="mailto:steuwer@univention.de">steuwer@univention.de</a>>; <a ymailto="mailto:kolab-users@kolab.org" href="mailto:kolab-users@kolab.org">kolab-users@kolab.org</a><br>> Inviato: Venerdì 24 ottobre 2008, 9:17:55<br>> Oggetto: Re: kolab 2.2<br>><br>><br>> Thanks, But I don't know the why in my htop I see the imap have a 100%
of<br>> CPU... There is some parameter or something I should do ??<br>> thanks<br>><br>><br>><br>><br>> ________________________________<br>> Da: Ingo Steuwer <<a ymailto="mailto:steuwer@univention.de" href="mailto:steuwer@univention.de">steuwer@univention.de</a>><br>> A: <a ymailto="mailto:kolab-users@kolab.org" href="mailto:kolab-users@kolab.org">kolab-users@kolab.org</a><br>> Cc: Gabriele Di Giambelardini <<a ymailto="mailto:gabriele_d_g@yahoo.it" href="mailto:gabriele_d_g@yahoo.it">gabriele_d_g@yahoo.it</a>><br>> Inviato: Venerdì 24 ottobre 2008, 8:34:26<br>> Oggetto: Re: kolab 2.2<br>><br>> Hi,<br>><br>> Am Donnerstag, 23. Oktober 2008 schrieb Gabriele Di Giambelardini:<br>> > Hi to all, I have a big problem with kolab 2 performance.<br>> > I have an server with 10 GB of RAM and about 150000 users.<br>><br>> Once they are imported into LDAP and the mail-spools are
created, the pure<br>> amount of users should not be the problem, but the number of current users<br>> and the number/size of deliviered mails. We installed a kolab-based<br>> mailserver with ~80000 users (mailaccounts) and Horde webmail on a far<br>> smaller hardware (one server, 2GB RAM) years ago.<br>><br>> > After I imported the user in the kolab ldap the server become very very<br>> > slow, it's impossible use a webmail. so I installed the webmail on other<br>> > server with eaccelerator. But now on my main server the kolab imapd take<br>> > all the CPU and every thing is too slow. The are some settings for imap<br>> > of if somebody know the why of this latency... THANKS<br>><br>> We [1] had trouble with cyrus and horde getting slow in large installations<br>> because of a very inefficient group-ACL-computing of cyrus. In some cases<br>> it helps to activate "nscd" with large cache sizes
(mhm, I don't know if<br>> nscd is part of a standard Kolab-distributon?), in other scenarios we<br>> deactivated this in Cyrus' imapd.conf (unix_group_enable: no) - which is OK<br>> as long as group ACLs are not required. But this might also be slightly<br>> different in plain Kolab.<br>><br>> You should try to figure out what the imapd really does. Is it during a<br>> login, mail-delivery, folder-operations etc.; maybe imapd is only waiting<br>> for something else (Disk I/O, LDAP, ...)?<br>><br>> Regards<br>> Ingo Steuwer<br>><br>> [1] Please note that we don't use the openpkg-distribution of kolab but a<br>> derivated installation based on Debian with patches and configurations<br>> similar to/derived from plain kolab.<br>><br>> > Scopri il blog di Yahoo! Mail:<br>> > Trucchi, novità e scrivi la tua opinione.<br>> > <a href="http://www.ymailblogit.com/blog"
target="_blank">http://www.ymailblogit.com/blog</a><br><br><br><br>-- <br>Ingo Steuwer Projektmanagement <a ymailto="mailto:steuwer@univention.de" href="mailto:steuwer@univention.de">steuwer@univention.de</a><br>Univention GmbH Linux for your Business fon: +49 421 22 232-43<br>Mary-Somerville-Str.1 28359 Bremen mob: +49 173 2112971<br> <a href="http://www.univention.de" target="_blank">http://www.univention.de</a> fax: +49 421 22 232-99<br><br>_______________________________________________<br>Kolab-users mailing list<br><a ymailto="mailto:Kolab-users@kolab.org" href="mailto:Kolab-users@kolab.org">Kolab-users@kolab.org</a><br><a href="https://kolab.org/mailman/listinfo/kolab-users"
target="_blank">https://kolab.org/mailman/listinfo/kolab-users</a><br></div></div></div><br>
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