Path: utzoo!utgpu!watmath!focsys!larry
From: larry@focsys.UUCP (Larry Williamson)
Newsgroups: comp.unix.microport
Subject: Re: Efficient tape I/O, Followup.
Summary: The answer was found, and it was me.
Message-ID: <333@focsys.UUCP>
Date: 23 Dec 88 19:16:34 GMT
References: <321@focsys.UUCP>
Reply-To: larry@focsys.UUCP (Larry Williamson)
Organization: Focus Automation Systems Inc. Waterloo, Ontario.
Lines: 24

From article <321@focsys.UUCP>, by larry@focsys.UUCP (.. me ..):
> 
> Streaming tape I/O with 386/ix seems to be rather slow.  The drive
> is not streaming very well.  It spends most of it's time stopping
> and starting.

I posted a followup to this discussion, but maybe it did not get out,
so ...

The problem that I was having turned out to be hardware related. I
had an interrupt conflict. It turns out that the tape interface
board had it's interrupt level set to other than the level unix
expects.

The tape now works like a charm. Very fast. It streams for a very long
time.

Thanks to all who offered suggestions.

Regards,
     Larry.
-- 
Larry Williamson  -- Focus Systems -- Waterloo, Ontario
                  watmath!focsys!larry  (519) 746-4918