Citeren Registration <registrat...@portabile.net>:
Dear Imp users and developers,
my problem is as follows:
- Login to Horde takes 3 seconds.
- Loading mails takes 7 seconds for a larger IMAP folder, and 1-2
seconds for one with only a few messages in it.
- Top shows 97% CPU from php5-fpm, 3% from imap.
That means that performance problems are probably in php. Do you use
an php opcode cache / accelerator? If so, which one?
- When messages are cached, everything gets super fast.
- The loading times are probably proportional to the amount of
message headers Imp loads for viewing.
My questions are:
- Is this normal speed?
It depends. How large is a large IMAP folder? How many folders do you have?
- If not, how would I systematically search for the problem?
- I tried xhprof, but I can't get the part where Imp refreshes
messages captured.
My config:
- Debian Wheezy, Apache, php5-fpm, Dovecot, imapproxy
Without version numbers, there is no way for us to tell what you're
actually using.
- Auth using Imp using MySQL/PDO connection via sockets
- Dovecot using Maildir, PAM disabled, mysql auth only
- Horde caching enabled
Which cache backend?
- everything on one host
If everything is on the same host, imapproxy is redundant an may even
hurt performance if you have a modern IMAP server like Dovecot.
- standard rented server
I wonder what the specifications of a 'standard rented server' are. :-)
- everything up-to-date
What may be up-to-date on Debian Wheezy may still be seriously out-of-date.
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