Hi,
If you explain your situation, we could offer more advice. For almost all purposes, Exim will be quite fast enough even on modest hardware. Which of the settings below do you think will be limiting?
On 16 Aug 2013, at 07:47, boyd yang <boyd.yang@???>
wrote:
> Hi Ian,
>
> I just see that exim can handle only 1000 concurrent connections(for sending out emails via SMTP), more will get error with loadrunner.
> Exim does not utilize full of the cpu/memory of the server.
> I have this additional configuration:
> root@mail:/etc/exim4/conf.d/main# cat 00_local_settings
> smtp_accept_max=1000000
> smtp_accept_queue_per_connection=0
> queue_run_max=10000
> remote_max_parallel=1000
> smtp_connect_backlog=50
>
> No error found in the log too.
>
> Any configurations can let Exim4 use all the resources like cpu/memory?
> Thanks！
>
>
>
> On Thu, Aug 15, 2013 at 6:56 PM, Ian Eiloart <iane@???> wrote:
> Hi Boyd,
>
> I'm not aware of any benchmark testing. I don't think anyone does it as a matter of routine. Environments and configurations are highly variable.
>
> I'm still using what I think is nine year old hardware (to be upgraded soon for support reasons, not for performance), and performance has never been a problem provided queues are kept to a reasonable size: tens of thousands of queued messages is too much, but generally we don't exceed a few hundred queued messages.
>
> I'm quite happy with processing and scanning (ClamAV and SpamAssassin) a million messages per day per host on this hardware. Our mailstores are not on this hardware - and that will make a big difference.
>
> On 15 Aug 2013, at 09:04, boyd yang <boyd.yang@???> wrote:
>
> > Hello,
> >
> > I'm testing exim4-heavy 4.80 now with loadrunner.
> >
> > Do you know the latest the performance benchmark?
> >
> > Thanks!
> > --
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>
> --
> Ian Eiloart
> Postmaster, University of Sussex
> +44 (0) 1273 87-3148
>
>
--
Ian Eiloart
Postmaster, University of Sussex
+44 (0) 1273 87-3148
