RamFAST & GS/OS cache

[fmlin@terapin.com (Frank M. Lin)]

Now that I've got my self a CD-ROM drive, it's pretty obvious that the current
RamFAST driver isn't doing a great job at directory caching.

It really shows with the CD-ROM drive.  I mean, since the drive's access time
is slow, I can tell that lot of the time is spent on reading the directory.
After the directory is read, it looses it pretty fast...  if I close like 2 or
3 folders, and then try to go back, it would be re-reading it.

Questions...

1. How smart is the GS/OS cache??  Does it know when to flush the cache if the
directory information has been changed?

2. What does it cache anyway?  Does it cache both the data and the directory
tree or just the directory tree?

3. This sort of relates to question #2, how big should the cache be set?  I
mean, if it just caches the directory, I think 64k or 128k should be enough.
But if it caches data as well, then maybe more like 768k or 1024k...  I set my
to 768k right now.  Is it too big??  I guess it really doesn't matter, because
I'm using RF.

3. Do all 16 bit programs benefit from GS/OS cache?  Do certain toolsets have
to be started by the application?

4. Does the Apple II High-Speed SCSI card support GS/OS cache?

I am going to bug Drew to support GS/OS cache :)

frank m. lin
fmlin@terapin.com