Date: Wed, 8 May 1996 19:23:50 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: rgrimes@GndRsh.aac.dev.com (Rodney W. Grimes) Cc: nate@sri.MT.net, current@FreeBSD.ORG Subject: Re: *SLOW* remote dumps Message-ID: <199605080953.TAA28551@genesis.atrad.adelaide.edu.au> In-Reply-To: <199605080602.XAA02949@GndRsh.aac.dev.com> from "Rodney W. Grimes" at May 7, 96 11:02:01 pm
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Rodney W. Grimes stands accused of saying: > > > > I decided to backup my laptop since I got a new disk for doing -current > > > development last week, and backups speeds are running 30-40K/sec, > > > whereas the exact same box running -stable (different drive, but > > > iozone's are comperable) gives me 450-500K/sec. Any ideas? > > > > Note, I tried using rsh and it went *really* fast, although it wasn't a > > usable dump. > > > > dump 0usf 138600 - /usr | rsh remotehost dd of=/dev/rmt/0ub > > Try that as: > dump 0busf 10 138600 - /usr | rsh dd bs=10240 of=/dev/rmt/0ub Why are you using rsh? We've been remote-dumping (and restoring, AFAIK) for quite some time, with excellent throughput using : dump 0fuB <host>:/dev/nrst0 2097000 <filesystem> on 2GB DDS tapes. Using host:device sends stuff to rmt which is highly preferable to rsh. -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] Collector of old Unix hardware. "Where are your PEZ?" The Tick [[
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