MailScanner and RHEL 3

[Trever Furnish]

> -----Original Message-----
> From: mailscanner-user [mailto:mailscanner-user at NELAND.DK]
> Sent: Friday, June 25, 2004 12:43 AM
> To: MAILSCANNER at JISCMAIL.AC.UK
> Subject: Re: MailScanner and RHEL 3
>
>
> Trever Furnish <TGFurnish at HERFFJONES.COM> wrote:
> > Ditto.
> >
> > I have the same problem on a compaq dl380 g3 with 1GB of
> RAM and on my
> > workstation at home.  I went straight from redhat 7.2 to redhat 9,
> > then to RHEL3 - the same hardware running rh7.2 never had an issue,
> > so I've always thought it was because of the switch in memory
> > management code RH did starting with 7.3.
> >
> > On my mailscanner system, performance increased greatly after I just
> > turned off swap entirely.  Before that performance would be ok till
> > memory approached the max of physical ram.  Buffer cache always
> > chewed up way more than I wanted it to, and so far as I know the
> > amount of buffer cache used isn't tunable within RHEL3.
> >
> > I don't know that buffer cache accounts for the whole problem though
> > - I had more swap used than I had buffer cache in use, so I think
> > there's an issue with deciding *when* to swap and *when* to unswap.
> > :-(
> >
> > Although I've been *very* happy with rhel3 since I turned off the
> > swap, I was awfully disappointed to find this bug still seemingly
> > present.
> >
> If the RHEL kernel has these memory issues, it should be
> possible to just
> use a standard, non-RH kernel instead, as these problems are
> not reported
> from other linux'es.

True, and thanks for the suggestion, but that sort of negates the primary
reason for paying redhat, which is to avoid having to maintain the system
software yourself. :-)

Maybe this thread will provide enough validation of the problem for a
bugzilla report to get some notice from redhat - there may already be one
for all I know.  I'll do some searching and open one if not.  I'm glad to
see I'm not the only one having the issue.

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