[459] in arla-drinkers
Excessive disk cache activity.
daemon@ATHENA.MIT.EDU (Werner Krebs)
Tue Jan 5 21:59:11 1999
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Date: Tue, 05 Jan 1999 22:02:10 -0500
From: Werner Krebs <werner.krebs@yale.edu>
Organization: Yale University
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To: arla-drinkers@stacken.kth.se
Subject: Excessive disk cache activity.
References: <36919011.20DE@yale.edu> <ixd67ampdef.fsf@turbot.pdc.kth.se>
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I installed arla and tried installing the milko server on a RedHat box.
Some observations:
- When I would ls an AFS cell (I used stacken.kth.se cell because Yale
does not have an AFS cell yet) I would get a lot of disk activity (the
drive did an excessive amount of seeking very rapidly).
This is obviously cache-related, but it is not a good sound (too much
seeking in a small area of the drive). This seeking activity would
continue for almost a minute after each simple ls.
Also, the operations I was doing (just ls'ing the same small directory a
few times) should not have required using the on-disk cache at all after
the first attempt.
The cache is set for about 100 megs high water.
milko:
How do I add things to the root directory? (arlad -t seemed to mount the
milko server (it was registering GetRoot fetches), but "ls /afs"
returned "Not a directory" and I couldn't figure out how one goes about
actually placing things in the volume.
