On 9/27/01 6:47 PM, "Wietse Venema" <wietseporcupine.org> wrote:

>> But it could concievably help with, say, /var/mail if you have not
>> already built a hashed directory structure..
>
> We're drifting away from the topic at hand, which was making Postfix
> deliver a million different messages in as little time as possible.

And as an aside, I think it's not really postfix you need to focus on here,
but the hardware. If you want to build a really fast delivery engine, all
the postfix tweaking in the universe won't help if the underlying hardware
isn't up to it. You need a really fast network pipe, and you need lots of
disk I/O. If you have that, you can get really good delivery. If you don't
have that -- nothing the software does will save you.

An operation like this is exceptionally disk intensive, even with an I/O
efficient tool like Postfix. And it can only send as fast as the network
will allow. You need a lot of parallelism in delivery, which means a wide
pipe and lots of disk spindles to share the load before you worry about how
you tweak postfix to use that capacity.

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