Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!think.com!mintaka!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!targon!gert
From: gert@targon.UUCP (Gert Kanis)
Newsgroups: comp.os.minix
Subject: Re: Bigger buffer cache for PC MINIX
Summary: How big is big?
Keywords: cache PC buffers
Message-ID: <1694@targon.UUCP>
Date: 19 Apr 91 10:22:31 GMT
References: <MIKE.91Apr2131128@client25.prg.ox.ac.uk>
Followup-To: comp.os.minix
Distribution: comp
Organization: Siemens Nixdorf Informationsystems BV.,SWZ, Vianen, the Netherlands.
Lines: 29

In article <MIKE.91Apr2131128@client25.prg.ox.ac.uk> (Mike Spivey) writes:
>Some time ago, I suggested enlarging the buffer cache of PC MINIX by
>putting part of it outside the FS address space.  I've now done this,
>
>Here are some rough timings for different MINIX configurations.
>
>	KERNEL REBUILD (root on hard disk)
>
>	big cache			6:59
>	/tmp on ram disk		7:21
>	bare (no ram disk)		7:42

[ .. more timings deleted ]
>
>-- Mike Spivey

I was wondering just *how* big you made your buffer cache.

P.S. On the 68000 system it's also possible to increase buffer cache.
     Just change the #define in minix/boot.h (or was it config.h ?).
     Recompile (FS ?) and build a kernel.

+-------------------------------------------+
| Gert Kanis, AP SWZ                        |
| Siemens Nixdorf Information systems       |
| P.O.box 29,  4130 EA Vianen, Netherlands. |
| E-mail: [smart-mailer!]gert@targon.uucp   |
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