Re: [exim] Speeding Up Exim

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Author: Patrick von der Hagen
Date:  
To: Matt
CC: Exim Mailing List
Subject: Re: [exim] Speeding Up Exim
Matt schrieb:
[...]
> Cpu(s): 10.1% us, 3.3% sy, 0.0% ni, 25.4% id, 61.0% wa, 0.2% hi, 0.0% si

61% wa? That's a true indicator for IO-problems.

[...]
> Running bind on server and from I have heard bind does not create a
> significant system load.

If you run it as a caching nameserver, it should reduce load.

[...]
> Do entries like this in exim.conf create more disk I/O?
>
> # deny email addresses listed in file
> deny recipients = lsearch;/etc/virtual/blocked_email
>       message = Email account suspended due to inactivity

That file is accessed frequently and if you have sufficient memory (top
reports 300MB of free memory) your kernel should cache this file in
memory, so this is nothing to worry about.

Regarding SpamAssassin I remeber once causing high load with
"lock_method nfssafe" which disappeared after changing it to flock. Wild
guessing...


--
CU,
Patrick.