Date: Tue, 7 May 1996 23:02:01 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: nate@sri.MT.net (Nate Williams) Cc: nate@sri.MT.net, current@FreeBSD.ORG Subject: Re: *SLOW* remote dumps Message-ID: <199605080602.XAA02949@GndRsh.aac.dev.com> In-Reply-To: <199605072330.RAA22700@rocky.sri.MT.net> from Nate Williams at "May 7, 96 05:30:41 pm"
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> > 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 > > With the above command I got my 450K/sec again, but unfortunately the > dump is unusable. Probably due to the fact that rsh broke up the blocks which dd then wrote to the tape using variable length records. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Reliable computers for FreeBSD
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