[106] in Info-AFS_Redistribution
Re: Cacheing of large files.
daemon@ATHENA.MIT.EDU (Craig_Everhart@transarc.com)
Thu Apr 25 12:46:47 1991
Date: Thu, 25 Apr 1991 11:49:31 -0400 (EDT)
From: Craig_Everhart@transarc.com
To: Info-AFS@transarc.com, M.Forster@cc.imperial.ac.uk
In-Reply-To: <5B04181107030386-MTAVE960*M.Forster@cc.ic.ac.uk>
My experience wasn't exactly like what you asked about, but it's related.
I don't know how big your CAD files are, but when I was at CMU working
on something unrelated to AFS, I had no trouble reading and writing all
of a 12-megabyte file on a machine that had a 12000-block cache (about
12 megabytes itself). I used an AFS directory as a location for
``sort'' temporary files, since no partition on the local disk was big
enough. It wasn't fast, but it was a very big task for a tiny machine,
and everything worked fine. It was just one task on a machine that was
doing lots of other stuff, too.
That's an experience related to reading and writing the whole contents
of very large files. If you're not reading and writing the whole thing,
it should work far better, since you won't have to load up your cache,
but only those chunks (64KB default size) that you reference. Thus,
only those chunks will displace chunks of other files.
Craig
