Date: Sun, 1 Jan 1995 10:04:52 -0500 (EST) From: "Jonathan M. Bresler" <jmb@kryten.atinc.com> To: Sean Eric Fagan <sef@kithrup.com> Cc: hackers@freebsd.org Subject: Re: rdump is slow Message-ID: <Pine.3.89.9501010910.B11298-0100000@kryten.atinc.com> In-Reply-To: <199501010722.XAA24011@kithrup.com>
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On Sat, 31 Dec 1994, Sean Eric Fagan wrote: > Has anybody sat down and tried to figure out why? > > (rdump is taking about six hours to dump <700MBytes across an ethernet; > doing about the same amount, spread over different filesystems, takes about > 30-45 minutes locally, to the same tape drive.) > > It could be due to the ethernet, I suppose, but... I think it unlikely. > > Any comments? > > Sean. rdump from 1.1.5.1 to sunos 4.1.3 over the local ethernet works fine. rdump'ed 84 MB (?? per df output, dump indicates 45 MB on 8mm 5 GB cartridge tape--anyone know why ??) in 5 minutes. i will try 2.0R this week. here's sample output: Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd0e 225202 83804 118877 41% /usr DUMP: Date of this level 0 dump: Fri Dec 30 07:56:04 1994 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rsd0e (/usr) to /dev/nrst9 on host windsurf DUMP: mapping (Pass I) [regular files] DUMP: mapping (Pass II) [directories] DUMP: estimated 92044 tape blocks on 0.01 tape(s). DUMP: dumping (Pass III) [directories] DUMP: dumping (Pass IV) [regular files] DUMP: 95.28% done, finished in 0:00 DUMP: DUMP: 92017 tape blocks on 1 volumes(s) DUMP: DUMP IS DONE DUMP: level 0 dump on Fri Dec 30 07:56:04 1994 DUMP: Closing /dev/nrst9 DUMP: Date of this level 0 dump: Fri Dec 30 08:01:34 1994 DUMP: Date of last level 0 dump: the epoch DUMP: Dumping /dev/rsd0f (/home) to /dev/nrst9 on host windsurf DUMP: Closing /dev/nrst9 Jonathan M. Bresler jmb@kryten.atinc.com | Analysis & Technology, Inc. | 2341 Jeff Davis Hwy play go. | Arlington, VA 22202 ride bike. hack FreeBSD.--ah the good life | 703-418-2800 x346
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