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- Path: sparky!uunet!wupost!cs.utexas.edu!rutgers!njitgw.njit.edu!hertz.njit.edu!dic5340
- From: dic5340@hertz.njit.edu (David Charlap)
- Newsgroups: comp.os.os2.misc
- Subject: Re: Couldn't stick it out...
- Message-ID: <1992Jul30.210428.29328@njitgw.njit.edu>
- Date: 30 Jul 92 21:04:28 GMT
- References: <1992Jul27.212525.26274@infonode.ingr.com> <1992Jul28.170147.16466@njitgw.njit.edu> <1992Jul29.204736.26878@infonode.ingr.com>
- Sender: news@njit.edu
- Distribution: usa
- Organization: New Jersey Institute of Technology, Newark, N.J.
- Lines: 58
- Nntp-Posting-Host: hertz.njit.edu
-
- In article <1992Jul29.204736.26878@infonode.ingr.com> bbrown@infonode.ingr.com (Bailey Brown) writes:
- >dic5340@hertz.njit.edu (David Charlap) writes:
- >>Your MPEG viewer is probably a very well written program, then.
- >>There's nothing inherent in Windows that will cause a slowdown
- >>(although DOS boxes cause it serious problems). If all you have are
- >>Windows apps, and all disk I/O is to the hard drive, you can get ver
- >>good speed. Assuming the Windows apps are well written (MS
- >>applications are NOT this way!).
- >
- >The MPEG viewer is a terribly written program. I practically NEVER
- >yields. It takes several tries to get clicks on the "stop" button
- >to register. However, it has to be this way because it has alot of
- >work to do to get 15 frames/sec on an ET4000. It uses a special
- >DLL to access the video directly, bypassing windows.
- >
- >However, since Windows runs all windows programs as one pre-empted task,
- >and each dos program as its own pre-empted task, my DOS comm program
- >was able to keep downloading full tilt while the mpeg movie ran.
-
- You didn't mention that it was a DOS comm program. I assumed you
- meant a Windows comm program. Which would make the MPEG viewer very
- friendly for downloads to work uninterrupted.
-
- I've found that Procomm Plus 2.0 is great if you set its priority high
- enough. I had mine set to 300/300 (with Windows app priority set to
- 75/100) and there was never a download interruption. Except when
- using the floppies.
-
- >I don't follow what you mean by saying dos boxes give windows serious
- >problems. As far as I can tell, the only really serious problems windows
- >has is with accessing floppies.
-
- I've found that DOS boxes tend to slow down Windows apps much more
- than they should. I don't think Windows 3.0 (I've only used 3.1 on a
- 486DX2/50 in school, so I can't really judge speed with it) does a
- good enough job of detecting idle time.
-
- And, as you say, floppy access cripples Windows. Since I regularly
- install shareware from floppies (I can't download them from home due
- to the phone bill, so I download them at high speed at school and take
- them home on floppies), the inability to do anything while copying
- large quantities of stuff is a real problem for me.
-
- >Using free jpeg source compiled with Intel CodeBuilder (32-bit DPMI)
- >doing jpg->gif on a 272x400 color jpeg file:
- >
- >Plain dos : 14.61 seconds
- >Dos under win 3.1 : 14.72 seconds
-
- Now try this with another DOS session open and running. Or while your
- comm program is downloading.... I wonder what the slowdown will be.
- I'd also love to see an equivalent test done in OS/2 DOS boxes and
- VDM's.
- --
- |) David Charlap "I don't even represent myself
- /|_ dic5340@hertz.njit.edu sometimes so NJIT is right out!.
- ((|,)
- ~|~ Hi! I am a .signature virus, copy me into your .signature file.
-