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From: sc05@harvey.gte.com (Shih-Chio Chang)
Newsgroups: comp.windows.ms
Subject: Re: Severe performance degradation with 386 enhanced mode, any tips?
Summary: Watch for network drivers in background
Message-ID: <10430@bunny.GTE.COM>
Date: 24 Jan 91 17:14:16 GMT
References: <1991Jan16.224240.14201@news.iastate.edu> <7311.279bff79@eva.slu.se>
Sender: news@gte.com
Lines: 20


I was following the discussion and did some experiments for myself.  I have
found a possible cause that nobody had mentioned.  In my case, I am using
a Compaq 386/20 and X11/AT with a 3Com305 card for ether net access.
I have found that the Norton (ver. 4.5) SI index to be around 24 before
window was launched, and stayed around that figure in full-screen DOS session
in window enhanced mode.  However, the SI index dropped to around 20 for
windowed DOS session.  Then the biggest degradation came when I launched
NetTask, the resident network driver used by X11/AT.  The index dropped to
around 15 in either windowed or full-screen DOS sessions.

I do not have experience with other network drivers (I used PC-NFS and
X-View for a while but they basically do not work with windows, and has the
unfortunate limitation of 7 windows maximum posed by PC-NFS),  but I would
imagine similar situations may occur.

S.C. Chang
GTE Labs
schang@gte.com
(617)466-2988