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From: fry@zariski.harvard.edu (David Fry)
Newsgroups: comp.sys.mac.programmer
Subject: Re: System 7 and cache
Message-ID: <5457@husc6.harvard.edu>
Date: 24 Jan 91 17:29:49 GMT
References: <636@adimail.UUCP>
Sender: news@husc6.harvard.edu
Organization: Harvard Math Department
Lines: 32

In article <636@adimail.UUCP> tel@adimail.UUCP (Terry Monks) writes:
>A bbs I wrote has been fine except for one user who manages to crash it
>any time. Well, that's my problem and I will look further (Yes, I *am*
>using the Communications Toolbox) 
> 
>   The problem is that when the system crashes and I reboot, the last few
>message files are not updated, and I can only assume it is because they
>are still cached. So I go to the control panel - memory - and note that
>disk cache is adjustable but is always on. Is there *any* way to turn
>it off?
>
>-- 
>Terry Monks        Automata Design Inc    (703) 472-9400

First, if you're using the System 7 beta as an actual working
system, it may be unwise to attribute any particular problem
to anything other than using the beta itself.  I find it quite
stable, but it does have reproduceable bugs.

That said, you will not leave information in the cache if you
use the file manager correctly: you should call FlushVol()
periodically, usually everytime you close a file or if you're
going to go long times between FSWrites() (when something like
a system crash may occur).

As for your original question about turning off the Sys 7
cache: I don't know :-).

David Fry                               fry@math.harvard.EDU
Department of Mathematics               fry@huma1.bitnet
Harvard University                      ...!harvard!huma1!fry
Cambridge, MA  02138