*BSD News Article 53797


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Newsgroups: comp.unix.bsd.freebsd.misc,comp.os.linux.hardware
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From: wilko@yedi.iaf.nl (Wilko Bulte)
Subject: Re: Tape backup speed FreeBSD v. Linux
Organization: Private FreeBSD site - Arnhem, The Netherlands 
Message-ID: <DH9yEK.zw@yedi.iaf.nl>
References: <1995Oct30.090118.28117@state.systems.sa.gov.au>
Date: Mon, 30 Oct 1995 18:37:32 GMT
Lines: 15
Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:8039 comp.os.linux.hardware:19878

chdemgt@state.systems.sa.gov.au writes:

>FreeBSD 951020 SNAP:		 9.1 MB/min
>Linux 1.2.x (forget exactly):    15.4 MB/min

>The something was wrong could be detected at once by ear.  On FreeBSD the tape
>seems to run forward for 1.5 sec and then back for 1.5 sec.  This continues
>without intermission during the backup.  On Linux the tape seems to run
>forwards for long periods of time, very occasionally reversing once.

This sounds like you need to increase the blocksize to keep it streaming.
Consult the man pages of the tool you use on the tape.

Wilko