On Thu, Oct 13, 2022 at 01:30:41PM +0200, juan smitt wrote:
> What can we check/tune if there are ~35K mails in the active queue
> (stress test is being performed) and a mail spends ~4m in the active
> queue?
Your output latency is too high:
Throughput = Concurrency / Latency
> 2022-10-13 07:54:05.823323+00:00 postfix/qmgr ... (queue active)
> 2022-10-13 07:58:12.308448+00:00 postfix/smtp ...
> relay=relayserver.ip[relayserver.ip]:25, delay=247,
> delays=0.06/245/0.09/1
Message delivery took ~1s. If your destination concurrency limit is 20,
then your throughput is ~20 msgs/sec which may be lower than the input
rate.
> The relayhosts are accepting the emails, the emails aren't deferred,
> the OS seems fine on both our side an on the relay nodes.
Why is it taking a full second to deliver a single message? You've
redacted the message size and recipient count, that's not helpful.
--
Viktor.
