MailScanner and RHEL 3

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>From: mailscanner-user <mailscanner-user at NELAND.DK>
>Reply-To: MailScanner mailing list <MAILSCANNER at JISCMAIL.AC.UK>
>To: MAILSCANNER at JISCMAIL.AC.UK
>Subject: Re: MailScanner and RHEL 3
>Date: Fri, 25 Jun 2004 07:43:20 +0200
>
>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.
>
>Hopefully, RHEL is still linux?
>
>Leif
>
Yes, you could use a custom kernel, but you immediately lose RedHat support 
the second you start running it, until you go back to a RedHat kernel.

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