Path: utzoo!utgpu!watmath!clyde!att!rutgers!cmcl2!nrl-cmf!ukma!cwjcc!mailrus!uwmcsd1!marque!uunet!mcvax!enea!kullmar!bk
From: bk@kullmar.se (Bo Kullmar)
Newsgroups: comp.unix.questions
Subject: Slow streamer on U5000
Keywords: streamer, tar
Message-ID: <486@kullmar.se>
Date: 30 Nov 88 06:24:54 GMT
Organization: Firma Bo Kullmar Datakonsult, Kista, Sweden
Lines: 24

I am posting this for a friend that do not run news:

I have a big problem with the tape streamer on U5000/30.  The problem is
that the drive is *very* slow.

In the following benchmark I've used the tar command:

     Machine               Speed  kb/min
                          Backup  Restore

     UNISYS 5000/20         316     454
     UNISYS 5000/30         316   1,039
     UNISYS PC/IT Xenix   1,035   1,825

Why is the backup speed exactly the same on U5000/20 and U5000/30 ?

Can I do anything to speed it up ?


--  Peter Fassberg                Internet: pf@dsthn.datema.se
    Datema Systems AB                 UUCP: ...!uunet!dsthn.datema.se!pf
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