*BSD News Article 22039


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From: storm@cs.mcgill.ca (Marc WANDSCHNEIDER)
Newsgroups: comp.os.386bsd.questions
Subject: Re: Is com performance improved under NetBSD 0.9 ?
Date: 7 Oct 1993 18:05:49 GMT
Organization: SOCS, McGill University, Montreal, Canada
Lines: 31
Message-ID: <291lpt$q80@homer.cs.mcgill.ca>
References: <28id7d$c8r@goodman.EECS.Berkeley.EDU> <CEA7HD.2IH@flatlin.ka.sub.org> <CEJ1D4.3y7@pilhuhn.sub.org>
NNTP-Posting-Host: mnementh.cs.mcgill.ca

In article <CEJ1D4.3y7@pilhuhn.sub.org>,
Heiko W.Rupp <hwr@pilhuhn.sub.org> wrote:
>bad@flatlin.ka.sub.org (Christoph Badura) writes:
>>>I have been using NetBSD 0.8 for some time now, and am very happy with it,
>>>except for one thing:  the performance of serial i/o.
>
>>Serial performance has increased a lot with NetBSD-0.9.  It's quite
>>possible to run at 38400 bps on a 386/40 and only get a couple of silo
>>overflows.  However the system on which we (Heiko and me) do this
>
>We naturally have fifos installed to acheive this - even when running
>two 38400 bps lines at the same time, we don't get too much silo
>overflows.
>Compiling the kernel with -O2 and DUMMY_NOPS also decreased the number
>of overflows.

	I have IDE drives, and I find that when I am doing ANYTHING other
	than leaving the downloads alone, I get big time silo overflows
	and CRC errors.

	Even just a simple 'clear' in an xterm will cause an overflow.

	Hopefully some SCSI disks will alleviate some of this...

						ToodlepiP!
						Marc 'em.
-- 
----------------------------------------------------------------------------
Marc Wandschneider					    Seattle, WA
	"Satan has a stranglehold on my toilet and he won't let go!"
			   - frm the Weekly World News