NetNews Usenet Archive 1992 #16/NN_1992_16.iso/spool/comp/os/os2/programm/3798

Internet Message Format | 1992-07-26 | 1.6 KB

Path: sparky!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!umriscc!mcs213c.cs.umr.edu!johns
From: [e-mail] (John Stone)
Newsgroups: comp.os.os2.programmer
Subject: Re: Hard Disk Interrupts?
Message-ID: <[e-mail]>
Date: 26 Jul 92 22:45:55 GMT
References: <[e-mail]>
Sender: [e-mail]
Organization: University of Missouri - Rolla
Lines: 27

In article <[e-mail]> rls@.wedge.nt.com (Robert L. Smith) writes:
>
>    I've been using OS2/2.0 for a month or so, on a '386DX with two
>hard drives, and get the impression that OS2 does nothing else --
>i.e., suspends multitasking -- while a hard disk operation is in
>progress.  If true, the reason may be that OS2 must poll the hard
>drive adapter to detect completion.  One piece of evidence for this
>conclusion (among others) is that a simple disk-to-disk copy operation
>in one partition disrupts a 9600-baud com transfer controlled by
>another.

   I don't know anything about your specific setup, but one of my
friends has an adaptec 1740 Bus master eisa (with OS/2 drivers) scsi
controller, and we have run disk/cpu benchmarks simultaneously to
see how badly the disk access slows the other process, and both
tasks complete in about 1.3 times that time as they would alone
(as opposed to 2.0 times the time..)

BUT, I do know that you should take PRIORITY_DISK_IO and set it to NO
in your config.sys, otherwise it doesn't matter what disk controller you
have.....

Try changing your config.sys, and see how that works for you.

Later,
         John Stone
         [e-mail]