Speed problems

Julian Field mailscanner at ecs.soton.ac.uk
Tue Mar 9 21:41:19 GMT 2004


At 21:30 09/03/2004, you wrote:
>Julian:
>
>I don't know if this will help now or not.
>
>The version that we currently have installed is 4.13-3.  We have tried
>4.26.8 but with the current HW config and the amount of mail we
>process, this version could not keep up with the traffic.
>
>I can't really run MailScanner in debug mode on this system (one of
>our production systems), however, I've tried varying the number of
>child processes from 1 to 10 (on 4.26.8) with no significant change in
>the throughput.
>
>I note that you have released 4.28.6.  Might this solve our speed
>issues?

That was one of the highlighted improvements, yes.


>Thanks,
>Mike
>
>Julian Field [mailscanner at ECS.SOTON.AC.UK] wrote:
> > I have been trying to reproduce the loss of speed running various different
> > versions on the same mail messages in debug mode.
> > Unsuccessfully :-(
> > I have used versions from 4.23 onwards. All appear to run at the same
> > speed. I am using a "reasonable" configuration with 1 RBL check and F-Prot.
> > The only thing is I am not running SpamAssassin, as its speed is very
> > variable and so hides the real speed of the underlying process.
> >
> > If you are suffering speed problems, please can you tell me what was the
> > last fast version you used, and what was the first slow version. Did you
> > downgrade again to fix the problem? Was it successful, and what version was
> > again nice and fast?
> >
> > If you run a batch through in Debug mode does it always take the same time
> > regardless of what version you are running? Maybe the problem only surfaces
> > when running lots of child processes?
> >
> > The better I can narrow down exactly when the problem occurred, the better
> > chance I have of finding it. It doesn't appear to be in the more robust
> > MIME code I implemented, that doesn't make any difference.
> >
> > Please can you help me folks?
> > --
> > Julian Field
> > www.MailScanner.info
> > Professional Support Services at www.MailScanner.biz
> > MailScanner thanks transtec Computers for their support
> > PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654

--
Julian Field
www.MailScanner.info
Professional Support Services at www.MailScanner.biz
MailScanner thanks transtec Computers for their support
PGP footprint: EE81 D763 3DB0 0BFD E1DC 7222 11F6 5947 1415 B654



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