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From: roy@phri.UUCP (Roy Smith)
Newsgroups: comp.unix.wizards
Subject: How many packets per second from a Sun-3 file server?
Message-ID: <2820@phri.UUCP>
Date: Mon, 27-Jul-87 17:34:42 EDT
Article-I.D.: phri.2820
Posted: Mon Jul 27 17:34:42 1987
Date-Received: Tue, 28-Jul-87 07:24:52 EDT
Organization: Public Health Research Institute, NYC, NY
Lines: 24


	About how many packets per second should I resonably expect to get
from a Sun-3/180 file server?  Ours seem to max out at about 300 pps or so,
but I have no idea if that's a lot or not.  I've seen individual clients
peak at 5-600 or so.  One server has 4 Mbytes and one Eagle, the other has
8 Mbytes with two Eagles sharing a controller (although we currently have
the file system laid out such that most activity is on one drive; we're
working on fixing that).  "Traffic" shows packets to be about 60/30/10
nd/udp/tcp; presumably most of the udp is NFS.

	I realize there is no single good answer to my question, especially
since I havn't told you anything about our workload, etc, but I'm looking
for ballpark figures.  Is "a lot of packets" 200 per second?  500?  1000?
2000?  More?

	Likewise, disk transfers/second seems to struggle to reach 50.  Is
that "a lot"?  Clearly the fact that our 2-Eagle server doesn't do any
better in this department than our 1-Eagle one means that we're really
wasting that second disk arm.  But, like I said, we're working on fixing
that.
-- 
Roy Smith, {allegra,cmcl2,philabs}!phri!roy
System Administrator, Public Health Research Institute
455 First Avenue, New York, NY 10016