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- From: bauwens@acs.ucalgary.ca (Luc Bauwens)
- Newsgroups: comp.os.os2.misc
- Subject: Re: Where did my 45% go? (DOS app performance)
- Message-ID: <92Aug13.233853.25755@acs.ucalgary.ca>
- Date: 13 Aug 92 23:38:53 GMT
- References: <1992Aug13.202130.15906@tandem.com> <1992Aug13.213405.17019@tandem.com>
- Sender: news@acs.ucalgary.ca (USENET News System)
- Distribution: usa
- Organization: The University of Calgary, Alberta
- Lines: 28
- Nntp-Posting-Host: acs5.acs.ucalgary.ca
-
- In article <1992Aug13.213405.17019@tandem.com> kevinz@storage.tandem.com (Kevin Ziegler) writes:
- >In article <1992Aug13.202130.15906@tandem.com>, kevinz@storage.tandem.com (Kevin Ziegler) writes:
- >>
- >> I put OS/2 on my no-name 486/33 box last week. The installation worked
- >> smoothly, and I haven't experienced any problems running my applications.
- >> However, all of my compute-intensive DOS applications are only running at
- >> 50% native DOS speed when launched in a full-size screen under OS/2. The
- >> latest OS/2 FAQ says to expect 95-97% native DOS speed from a single DOS
- >> application running full-screen under OS/2. Does anyone have any ideas
- >> where the other 45% of performance went?
- >>
- >> A little more info: I only have 5 MB of RAM, but the problem does not seem
- >> to be related to disk swapping; I have watched the disk drive light while
- >> the programs are running and the hard disk is not being accessed. I have
- >> AMI BIOS dated 6/6/91; I've heard of problems with OS/2 and AMI BIOS but
- >> these don't seem to be performance-related problems. Any help from you OS/2
- >> gurus out there would be much appreciated.
- >>
- >I should add that I have spent hours tweaking the DOS settings available
- >without experiencing any performance increase.
-
- How do you measure "performance"?
-
- Are you 'wall clock' timing execution?
-
- I typically find a 95-98% speed.
-
- Luc B
-