I'm not a QMail user and so can't verify or confirm the truth of this. However, we have enough performance and scalability discussions here that it may help someone:
http://lists.debian.org/debian-isp-0106/msg00221.html
--<cut>-- To: <debian-isp@lists.debian.org> Subject: Qmail - huge performance increase From: "Jason Lim" <maillist@jasonlim.com> Date: Thu, 21 Jun 2001 01:45:23 +0800 Reply-To: "Jason Lim" <maillist@jasonlim.com>
Hi,
Anyone that has followed this list knows I've been trying to boost Qmail's outgoing mail performance greatly.
Just thought I'd let everyone know that increasing the number in the "conf-split" drastically improves performance.
One of the problems I was having earlier was that the customer's server had a HUGE number of emails, and even just doing "ls" in each directory in the qmail queue directories would take ages, as there were so many individual emails queued.
SO... by increasing conf-split to 97 (from the default of 20 something afaik), each directory ends up only having a hundred or so files. Doing "ls" now is far speedier.
I couldn't find any documentation anywhere stating this, so I'll share it with you all :-)
Sincerely, Jason --<cut>--
-- J C Lawrence claw@kanga.nu ---------(*) http://www.kanga.nu/~claw/ The pressure to survive and rhetoric may make strange bedfellows