[12575] in Athena Bugs
[daemon@ATHENA.MIT.EDU : resolution to ultrix slowness problem]
daemon@ATHENA.MIT.EDU (marc@MIT.EDU)
Sat Sep 10 19:45:44 1994
From: marc@MIT.EDU
Date: Sat, 10 Sep 1994 19:45:37 -0400
To: bugs@MIT.EDU
You've probably seen this already, but if you haven't....
Marc
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[2993] daemon@ATHENA.MIT.EDU (Chuck Silvers) Info-AFS_Redistribution 09/07/94 03:58 (17 lines)
Subject: resolution to ultrix slowness problem
From: Chuck Silvers <chs+@cs.cmu.edu>
To: info-afs@transarc.com
Date: Tue, 06 Sep 1994 16:55:51 -0400
It turned out that there was a bug in the way the cache-manager dealt
with caching stat information in ultrix. If you are authenticated but
your access to a particular directory is the same as system:anyuser's,
it wasn't caching the access info for that directory. Thus if you
stat() a long pathname for which your access is the same as system:anyuser's
for most of the directories along it, the cache-manager would do many
RPC's for just a single stat() when it should have had everything cached.
This bug is fixed in afs 3.4. I am told that there are other fixes
in 3.4 that will make ultrix performance even better.
-Chuck
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