Hi Ralf, On Thu, Jan 17, 2013 at 2:19 PM, Ralf Lang wrote: > > Mind the * $conf[cache][use_memorycache] setting. > You can configure a first-level in-memory cache (APC, memcached) which falls > through to the disk or sql based > $conf[cache][driver] when it doesn't hit.
Oh, I understand now. Thanks for explaining that. I have now done some more testing, in Basic mode. I tried with and without the local file cache, and surprisingly the performance is exactly the same. I tried switching to SQL-based cache, and the application crashes, with "Lock wait timeout exceeded." This was with only one web server. At this point my inclination is to just leave it off for now. > Still, I wonder why dynamic mode stresses your imap server more than > classic. My guess is that the dynamic mode is simply designed for IMAP servers with faster responses. Ours can get pretty slow under load. It appeared to me as if it was queuing up commands, and if the one took too long, IMP would time out and raise an error talking to the server, and then all the subsequent commands that had been waiting their turn would throw an error, so the screen peppers itself with red error messages. The preview pane was very aggressive in this respect. That's not behavior we can have happening. It doesn't mean anything is wrong with IMP's dynamic mode per say, it just isn't going to work with the latency in our environment. Basic mode still feels slow at times, but it stays clean and predictable, and the IMAP server only gets hit when a user deliberately clicks a link. I'm not terribly concerned about it because of course we plan to change the storage backend once it is decoupled from the other components. Integrating Horde into our site is part of this process. After that the performance tuning will take higher priority. I got the preauth hook working now BTW. It was actually simple. Just check for $browser->isMobile() in the case of 'auto'. It's as good a place as any to add the hook, because the mode is set at authentication. Thanks Brendan -- imp mailing list Frequently Asked Questions: http://wiki.horde.org/FAQ To unsubscribe, mail: imp-unsubscr...@lists.horde.org
