Brandon Hilkert:
> I"m not disputing this fact. I used smtp-source with 10 connections.
>
> Without DKIM signing - 14,634 emails/min
> With DKIM signing - 4,762 emails/min
>
> I think we would both agree that that's a large discrepancy.
Yes.
> I'm using DKIM-milter. During the testing, the CPU nevers goes over 3-4%
3-4% of how many CPUs?
dkim-milter is one program that you are asking to sign lots of
messages in parallel. To implement parallelism, dkim-milter uses
mutiple threads in one process. To keep the threads from tripping
over each other, dkim-milter uses locks. With a bit of bad luck,
your DKIM requests are blocking each other.
Wietse
