Subject: Re: tuning for small memory machines
To: Perry E. Metzger <perry@piermont.com>
From: James Chacon <jchacon@genuity.net>
List: tech-kern
Date: 11/30/2002 02:58:25
Getting the "best" numbers for a given server may take trial and error.

At a minimum it should probably be documented some baseline numbers to use
for:

1. file server
2. desktop machine
3. General use machine (random login host)

I'm assuming any default numbers will work for a dedicated server host that
can keep the service in main memory (like a DNS server).

Since in general those 3 types are fairly generic and in some cases have
highly different default percentages. Also noting high vs low memory couldn't
hurt if that has impact.

James

>
>
>Brian Chase <vaxzilla@jarai.org> writes:
>> So somewhere between Simon Burge's 8MB pc532 and my 16MB VAX, there's a
>> zone where increasing anonmax can be useful.  I really don't have a very
>> good idea of what anonmax does yet,
>
>Anonmax/min sets the maximum/minimum amount of physical memory that can be used
>for program data. execmax/min covers program binaries, filemin/max
>covers file buffer space.
>
>Generally, you want to tune the three so that you minimize disk
>i/o. Trial and error seem to work best -- the right numbers are highly
>dependent on job mix.
>
>Perry
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