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- Xref: sparky comp.protocols.tcp-ip:4110 comp.sys.encore:101
- Path: sparky!uunet!ogicse!usenet.coe.montana.edu!uakari.primate.wisc.edu!ames!sgi!rhyolite!vjs
- From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
- Newsgroups: comp.protocols.tcp-ip,comp.sys.encore
- Subject: Re: How do you measure how much work a machine is doing routing?
- Message-ID: <oir7ojc@rhyolite.wpd.sgi.com>
- Date: 14 Aug 92 20:11:29 GMT
- Article-I.D.: rhyolite.oir7ojc
- References: <1992Aug14.145030.5609@uvmark.uucp>
- Organization: Silicon Graphics, Inc. Mountain View, CA
- Lines: 19
-
- In article <1992Aug14.145030.5609@uvmark.uucp>, todd@uvmark.uucp (Todd Cooper) writes:
- > We have an Encore running System V with two ethernet ports which we want to
- > use as a router. Is there a way with sar or another program to determine
- > how much work the machine is doing in routing packets?
- >
- > This machine is our heaviest loaded machine and we don't want to cause it
- > to become overloaded with forwarding packets.
-
-
- A quick and dirty technique I've seen used effectively is to take any
- CPU benchmark (the simpler the better, so Drhystone is fine), and run
- the benchmark with various simultaneous forwarding loads. The
- variations in what the bencmark reports can be attributed to the
- forwarding load. After calibrating the benchmark to the local machine,
- you can have the forwarding load expressed in units of fractions of a
- machine.
-
-
- Vernon Schryver, vjs@sgi.com
-