no murder here
I will try flat files and if no troubles , I will keep it.
thanks Stephen
Stephen L. Ulmer wrote:
On 1 Sep 2005, [EMAIL PROTECTED] said:
Patrice wrote:
Does someone know if the flat format type for my
/var/imap/mailboxes.db is good enough for only 1500 mailboxes ?
We use flat in our setup. We have about 65000 users with 264265
mailboxes.
We were using flat for about that size (65000, though we used it at
1500 too).
or it will impact performances ?
It works fine for us. Whether other formats would perform better, I
can't say. We never benchmarked. Flat format isn't as bad as you
would initially think, since cyrus mmap()s the file anyway. The big
hit you take is that each update requires the entire file to be
re-written.
Somewhere way back we switched to skiplist, and we are EXTREMELY happy
with it. I'm confident that we have enough activity now that just the
mailbox.db updates from folder creates would cause significant delays
while the file was re-written.
I don't know if Dave is running a murder, but it seems to us that
mailboxes.db updates on the proxies just work better with skiplist.
Good luck,
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