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From: breure%ITIHP1.TNO.NL@pucc.princeton.edu (Frank Breure)
Newsgroups: comp.os.minix
Subject: Re: About Minix 68k
Message-ID: <52301@nigel.ee.udel.edu>
Date: 1 May 91 07:12:05 GMT
Sender: mmdf@ee.udel.edu
Lines: 44

> Hello,
>
> last weeks, a few people mentioned that you could easily increase
> the number of cache buffers on the 68K version.
> IMHO this is true WITH RESTRICTIONS, because the ACK - compiler
> uses 16bit the maximum size of an array is 64k.
> If you want more cache buffers than 62 (one cache buffer is bigger
> than 1k because it's hold in a struct with some other information
> about the buffer status).

Sorry, sorry..

I'm WRONG about this, yesterday I wrote a small test program and it
is possible to have arrays above 68k size, should have than this
before posting BUT:

> Anytime I try to boot a kernel with NR_CACHE_BUFS > 62 it hangs in
> the startup, on an ST (running Minix 1.5.10.3) this means that the
> screen will remain white.

This is still true!

I first had the origal NR_CACHE_BUFS (I guess it was 32), if I increase
that above 62 I still can't boot, but if I make it 62 (with the hash_buf_size
64) I have no problems. I don't use a Ramdisk, and my boot device is on
/dev/hd3, and I boot from floppy (/dev/fd0), if I have more than 62 cache-bufs
the floppy drive will do a few seeks, and after that it remains turning
without anything happening (no messages on the screen).
Did anybody else have this problem ?
and what are possible solutions ?

Thanks

--
Frank Breure                                    (breure@itihp1.tno.nl)
Instituut voor Toegepaste Informatica-TNO       Delft, The Netherlands
----------------------------------------------------------------------
My opinions may be subject to change without notice.

--
Frank Breure                                    (breure@itihp1.tno.nl)
Instituut voor Toegepaste Informatica-TNO       Delft, The Netherlands
----------------------------------------------------------------------
My opinions may be subject to change without notice.