Timo, Can you recommend us some benchmarking tools to test the dovecot cluster setup?? Best regards
2011/5/10 Timo Sirainen tss@iki.fi
I don't think those results look too bad, even the original ones. imaptest doesn't measure real world performance anyway. Some ideas:
Try mdbox instead of sdbox. Cluster filesystems apparently like a few bigger files better than many small ones.
Try imaptest with logout=0 (or =1 or something). Now you're measuring way too much the login performance.
autocreate plugin sucks, especially with logout=100 because it has to check that all of the mailboxes exist. In v2.1 autocreate plugin is redesigned to not do any disk I/O.
On Fri, 2011-05-06 at 23:01 -0400, Aliet Santiesteban Sifontes wrote:
New results, now with all plugins disabled:
os rhel6 x86_64, GFS2 Lun
Totals: Logi List Stat Sele Fetc Fet2 Stor Dele Expu Appe Logo 100% 50% 50% 100% 100% 100% 50% 100% 100% 100% 100% 30% 5% 1- 4514 2189 2250 4514 4264 6163 709 3403 4260 4292 8726 2- 2827 1409 1389 2827 2765 3951 495 2168 2765 2777 5644 3- 2711 1409 1368 2711 2649 3833 512 2145 2647 2662 5396 4- 1799 912 890 1799 1720 2492 360 1370 1719 1735 3592 5- 3817 1869 1896 3760 3717 5313 575 3026 3715 3737 7616 6- 3296 1583 1628 3296 3215 4585 523 2600 3215 3238 6584
2011/5/6 Aliet Santiesteban Sifontes alietsantiesteban@gmail.com
the configs:
[root@n02 ~]# dovecot -n # 2.0.12: /etc/dovecot/dovecot.conf # OS: Linux 2.6.32-71.24.1.el6.x86_64 x86_64 Red Hat Enterprise Linux Server release 6.0 (Santiago) auth_cache_size = 15 M auth_default_realm = test.com auth_mechanisms = plain login auth_worker_max_count = 60 disable_plaintext_auth = no login_greeting = Server ready. mail_fsync = never mail_location = sdbox:~/sdbox:INDEX=/vmail/index/%n mail_plugins = quota zlib managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date mbox_write_locks = fcntl mmap_disable = yes namespace { inbox = yes location = prefix = separator = / } passdb { args = /etc/dovecot/dovecot-ldap.conf.ext driver = ldap } plugin { autocreate = Sent autocreate2 = Trash autocreate3 = Drafts autocreate4 = Junk autocreate5 = Archives autocreate6 = Templates autosubscribe = Sent autosubscribe2 = Trash autosubscribe3 = Drafts autosubscribe4 = Junk autosubscribe5 = Archives autosubscribe6 = Templates quota = dict:User quota::file:%h/sdbox/dovecot-quota quota_rule = *:storage=250M quota_rule2 = Trash:storage=+50M quota_rule3 = Spam:storage=+25M quota_rule4 = Sent:ignore sieve = ~/.dovecot.sieve sieve_before = /var/vmail/sievescripts/before.d sieve_dir = ~/sieve zlib_save = gz zlib_save_level = 6 } postmaster_address = postmaster@test.com protocols = imap pop3 lmtp sieve service auth { unix_listener auth-userdb { group = vmail mode = 0660 user = root } } service imap-login { service_count = 0 }
best regards
2011/5/6 Charles Marcus CMarcus@media-brokers.com
On 2011-05-05 7:56 PM, Aliet Santiesteban Sifontes wrote:
We have used sdbox as mailbox format, and all the user data is configured in LDAP Servers
It might help Timo to provide some suggestions if you also provide dovecot -n output... ;)
--
Best regards,
Charles