292439Re: R: Scheduling policies for outgoing smtp server
- Apr 8, 2013
> I just simulated the performance hit of 256 incoming queues by settingI expected some degradation in performance, but not so much (you tried with a
> hash_queue_names = incoming
> hash_queue_depth = 2
> and running smtp-source, sending mail to an alias for /dev/null.
> Postfix queue performance for small messages already dropped by
> 30%, with the write cache enabled on a 10,000RPM SAS disk (which
> is recommended for a production server only when the write cache
> has a battery to survive power failures).
> The performance drop will be worse with one queue directory per
> customer, unless you have very few customers of course.
lot of queues too).
I think the example environment is a mail marketing relay server, Giorgio said:
"User A, with ip address IP_A, sends 1 different email to 1 million of different
The indexing approach can fit this this specific application (marketing cloud
service!?); the daemon
don't need to scan on disk lots of hashes/subdirs. (a small size hash loadable
in memory can be less expensive)
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