On Dec 3, 2009, at 5:50 AM, Aravind Divakaran wrote: >> strace -tt would have actually been also more helpful, so it would have >> included timestamps. Are you using NFS or something similar for your >> filesystem in /home? The strace does show that Dovecot seems to be reading >> from a file that it just wrote to, so there's something non-optimal but it >> necessarily shouldn't be that slow. > > You can find my strace with timestamp on the below link. > > http://pastebin.com/m2942fbdd
That's only 400 milliseconds. I thought the delivers would be running for at least a few seconds? Can you show such a strace -tt? > My /home partition using san storage with ocfs filesystem. Anyway I suppose this could be the reason, if the problem is the reads.. You could also try if it helps when you increase this in src/deliver/deliver.c: #define MAIL_MAX_MEMORY_BUFFER (1024*128) to #define MAIL_MAX_MEMORY_BUFFER (1024*1024*100) i.e. 100 MB (or whatever is large enough for most mails).
