From: Daniel Stenberg (daniel.stenberg@autodiagnos.se)
Date: Tue Apr 13 1999 - 01:43:00 CDT
John Finlay wrote:
> How do multiple hypermail processes coordinate? Wait for archive to become
> unlocked or pass work onto the active process?
It waits for the lock. Passing data to the active process would mean
a much more advanced engine.
> For incremental mode this is
> the biggest problem area since the buildup of processes during heavy email
> sessions can bring a server to its knees.
Yes, if the average time between new arrivals is less than the average
time hypermail takes to add a mail, you're in major trouble. Although that
is nothing we can do anything about, only keep optimizing hypermail to
perform faster and better.
> During testing I hit the hypermail
> archive with 100000 messages at 10 messages per second.
Uuuuuh! :*)
> This is how my implementation worked. The cache file would be rebuilt if
it
> didn't exist. The nice thing about a cache file is that the time to add
and
> index each individual message is the same no matter what size the archive
> is.
It is a nice feature indeed. I surely wouldn't mind seeing that system
implemented in v2. Would you be interested in adding it for us?
> Opening 10000 or more files for each message is a big performance problem.
Yes. You don't even have to know much about programming to figure that out!
/ Daniel