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From: mdb@laidbak.UUCP
Newsgroups: comp.unix.wizards
Subject: Re: rdump, Ethernet slowness
Message-ID: <1268@laidbak.UUCP>
Date: Mon, 7-Dec-87 05:27:17 EST
Article-I.D.: laidbak.1268
Posted: Mon Dec  7 05:27:17 1987
Date-Received: Sat, 12-Dec-87 09:25:55 EST
References: <788@hsi.UUCP>
Organization: Lachman Associates, Inc., Naperville, IL
Lines: 8
Summary: rmt latency slows rdump

I believe that the /etc/rmt protocol, used by rdump, is synchronous. Each
I/O operation is acknowledged (back through the Ethernet) before the next
one is begun. The network transfer rate is good, but the latency is poor.
Hence, rdump spends much of the time waiting for write acknowledgements.

					Mark Brukhartz
					Lachman Associates, Inc.
					..!{ihnp4, sun}!laidbak!mdb