On Wed, 23 Oct 2002, Paulo Henrique Baptista de Oliveira wrote:
> --
> Hi all,
> I want to run Exim for a great number of messages/day (1 Milion or more)
> in a i386 machine.
> I installed Exim 3.35 in a Debian GNU/Linux woody server.
> The following are the specs(cpu, mem and bogomips):
>
> model name : Intel(R) Pentium(R) 4 CPU 1.70GHz
> cpu MHz : 1715.328
> bogomips : 3420.97
> free
> total used free shared buffers cached
> Mem: 254972 248740 6232 0 28044 205508
> -/+ buffers/cache: 15188 239784
> Swap: 506008 0 506008
>
> Exim is configured without any tweaks.
> We wrote an small C program to send 200 messages through Exim.
>
> ./test
> Wed Oct 23 04:11:11 BRST 2002
> Wed Oct 23 04:11:49 BRST 2002
You program is not THAT good, as you have much overhead because of
executeing nc for every message.
> The program indicates that Exim can handle only 5 mes/sec! ;(
> (200 mes/40s).
> This is so bad.
> What I can do to improve this number?
> I' m atacching the exim.conf too.
> Much thanks, Paulo Henrique
I run exim 4.10 on a small system:
PII-350
256 MB Ram
IDE-Drives
(very cheap MoBo)
Linux 2.4.18
The only perfomance related things i do is using split_spool_directory.
From my local system (without RBL/spamlist checking) is can spool
around 1000 Messages per minute.
From a remote-system, i'm able to spool 450-500 messages,
with RBLs and the spamlist from wirehub.nl (as CDB).
i use postal to check the performance
./postal -m5 -p5 myhost /file/with/one/recipient /dev/null
(i could not send multiple message per connection, because postal does
send unsynched)
You should watch for more memory, FAST hardrives and a local dnscache, to
improve performance, your results are too low.
Btw, benchmarking a MTA is not a easy task, as their are many things you
need to take into account, i saw that you use lsearch, this is slow,
because it needs to read every line of the file to get the result, switch
to something more powerful, like CDB or a DBM (created with
exim_dbmbuild).
If you use linux and IDE-Disk, you should try hdparm to tweak the
perfomance of your drives.
ciao
