From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dave Eckhardt <davide+p9@cs.cmu.edu>
Subject: Re: [9fans] acme mail on unix
To: 9fans@cse.psu.edu
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Date: Fri, 20 Jan 2006 18:01:03 -0500
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> (the S=2872 is the file size. i'm not sure why stat is so
> expensive on their machine.)

I suspect it's *not* because of this:  AFS directories
are (essentially) whole-file transferred to clients
who interpret them locally, but each stat() requires an
RPC to the server.

Instead my guess would be something more like: if you're
rebuilding the quota database you can do so by N/M
readdir()'s instead of N/M readdir()'s plus N stat()'s,
which is probably a huge reduction in disk seeks, which
would be attractive since almost everything stat() would
be telling you would be irrelevant (e.g., inode number,
permissions, actual disk blocks consumed).

Dave Eckhardt