Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!laidbak!mdb 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