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From: paul@ukpoit.co.uk (Paul Wood)
Newsgroups: comp.os.minix
Subject: MacMinix config.h NR_BUFS and NR_BUF_HASH options
Message-ID: <1640@ukpoit.co.uk>
Date: 13 Dec 90 12:13:23 GMT
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Reply-To: paul@ukpoit.co.uk (Paul Wood)
Organization: Post Office iT, Chesterfield
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I have been remaking my kernel, fs, mm and macboot a lot recently. It takes
approx 75 minutes to remake everything on my MacPlus (4MB memory, 20MB harddisk)
so you don't get many remakes in an evening :-).

One of the areas I have been changing is in the NR_BUFS / NR_BUF_HASH options.
My results are as follows:
    NR_BUFS           30           60           120           320
    NR_BUF_HASH       32           64           128           512
                      ^            ^             ^             ^
                  original      boots OK      wouldn't      wouldn't
                  settings                    boot          boot

The options where minix wouldn't boot fail because "fs" could not be found.
"Late" last night I was playing around with the File/Configuration options and
discovered that by increasing the heap option from the default (200K) to 300K
I was able to use the NEWmacboot with the 120/128 options. Now I understand that
the heap option controls how much space is left available for the mac OS (eg:
desk accessories etc.), so I don't see why changing the heap allows the "fs" to
be found. Can someone explain?

Tonight I'll remake everything using the 320/512 options, play about with the
heap setting and keep my fingers crossed.

Paul Wood           | UUCP Mail:  paul@ukpoit.co.uk   |
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