Cyrus tweaks (slow on roundcube)

Paul Bronson signaldeveloper at
Sat Sep 5 22:22:00 EDT 2015

Okay guys, I have put a lot of research into this so bear with me.

Here's what I am up against. I have been working with RC (roundcube) for a
long time and I know some awesome mySQL tweaks that work wonders, etc. My
tweaks haven't done a single thing for the kolab install. This the first
time I've worked with memcache. So here's my config before I proceed:

    // IMAP Server Settings
    $config['default_host'] = 'localhost';
    $config['default_port'] = 143;
    $config['imap_delimiter'] = '/';
    $config['imap_force_lsub'] = true;

    // Caching and storage settings
    $config['imap_cache'] = 'memcache';
    $config['imap_cache_ttl'] = '10d';
    $config['messages_cache'] = 'db';
    $config['message_cache_ttl'] = '10d';
    $config['session_storage'] = 'db';

    // SMTP Server Settings
    $config['smtp_server'] = 'tls://localhost';
    $config['smtp_port'] = 587;
    $config['smtp_user'] = '%u';
    $config['smtp_pass'] = '%p';
    $config['smtp_helo_host'] = $_SERVER["HTTP_HOST"];

I did notice that when I turn off tls on:

$config['smtp_server'] = 'tls://localhost';

that I can't log into RC, it seems to want to force me to use TLS, which I
read somewhere else. Not sure if this is the culprit here.

CHATTRSYNC is off on cyrus already (by default I guess?)

I've installed imapproxy which seems to be working as far as the logs are
concerned, but I STILL get about 3-4-5 second delay when opening through
email. I have since uninstalled the imapproxy... Memcache is working
properly according to the simply ps aux command or memcache-tool command
but it still seems slow on RC, doesn't seem to have made a difference. I
get these constant logs:

Sep  5 20:54:51 es1 imap[2281]: login: localhost [::1]
johndoe at PLAIN+TLS
User logged in
Sep  5 20:54:51 es1 imap[2281]: USAGE johndoe at user: 0.009998
sys: 0.006999

It logs everytime the user makes a click or opens an email. Again,
imapproxy didn't work much.. I tried disabling TLS, tried changing the
cache methods.. Have been doing research pretty much all day trying to
tweak this. Some have said comment out the kolab files plugin, that didn't
make any difference at all. Cyrus just seems to take forever for some
reason.. I am talking 4-5 seconds waiting before the email even shows on
the screen.

memcache conf:

OPTIONS="-vv >> /var/log/memcached 2>&1"

I tried increasing cache size, didn't help (not that I thought it would
either)... I am getting a little desperate here.

I changed php.ini to memory_limit = 4096M... Already kicked up my innodb
performance settings tuned like my fast non-kolab servers.. I don't think
its a mysql problem either.. The problem is with the

Any ideas as to why this is so slow compared to my non-kolab RC install I
have going right now (dovecot based)?

By the way, this server has two active email accounts on it.. No load what
so ever.

Kolab 3.4, centos 6

I am not sure what else to try to make cyrus faster!!! Can someone suggest
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