Path: utzoo!attcan!uunet!virtech!cpcahil
From: cpcahil@virtech.uucp (Conor P. Cahill)
Newsgroups: comp.unix.i386
Subject: Re: ISC UNIX 2.2 & tape drive
Keywords: the usual tape problem
Message-ID: <1990Jul23.011636.14224@virtech.uucp>
Date: 23 Jul 90 01:16:36 GMT
References: <8688@uhccux.uhcc.Hawaii.Edu>
Reply-To: cpcahil@virtech.UUCP (Conor P. Cahill)
Organization: Virtual Technologies Inc., Sterling VA
Lines: 20

In article <8688@uhccux.uhcc.Hawaii.Edu> todd@uhccux.uhcc.Hawaii.Edu (Todd Ogasawara) writes:
>
>see if they would work better. But they did no better than tar (about
>10 minutes to save 500kbytes of files).

Try cpio with -C 102400  which should give you about 1MB of buffering and
therefore handle the problem.

You could also try afio, which is reputed to use double buffering.

Experiments with tape drives and console output have shown that if you have
scrolling output on your console it will cause the tape drive output to 
pause momentarily and restart.  This has a very bad effect on the throughtput
of your tape output, so you should not use any of the aformentioned commands
with the verbose flag set (unless you redirect the verbosity into a file).

-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.,
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170