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DOS app very slow opening

Posted on 2004-09-10
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Last Modified: 2010-04-12
Hi All,

I have a strange problem with a DOS application which runs off W2K laptops. When the laptops are connected to the LAN and swithced on for a full boot up the dos app opens fine. But when the laptops are off the LAN or if the LAN cable is inserted when the OS is fully loaded up then the DOS application takes an age to start/open!. This is also true when exiting the DOS app.
I have tried fiddling with the DOS app's memory settings etc.
Any help is great!
Blogg
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Question by:Blogg
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by:andyswarbs
ID: 12034457
check contentsd of autoexec.nt and config.nt - both in system32.  paste them here
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by:Blogg
ID: 12042945
Yes I had already checked these; just the usual stuff in there e.g.
dos=high, umb
device=%SystemRoot%\system32\himem.sys
files=100
buffers=30,0

(this was the config.nt)
 autoexec was :

set field_date=british
set blinker=/ek-

Nothing that I think would cause this problem.

Thanks,
Blogg
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by:andyswarbs
ID: 12049782
ok.  Can you descrivbe what the app does.  Esp in networking terms, if anything.  Is it pulling files from shares or anything?  Does it open any temp files?  Perhaps yoy might need to use sysinternals.com's filemon to monitor any file access, if you do not actually know the app well.
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by:Blogg
ID: 12053262
True, I don't know the app well but I thought a couple of  DOS 'tweaks' may fix it?? I do know it does not use any shared drives.
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andyswarbs earned 125 total points
ID: 12056124
I think not.  NT/2k/XP is not like 95/98 where some tweaks of that sort help in the latter.

There are issues with DOS apps running slow under terminals services.  If you are in that environment then let me know and I can point you to some web resources.

Other than that it sounds like a good ol' lack of resources issue - the straw that broke the camels back and all that.  What I would do is look at what processes you are running and see if closing/killing them might help.

One more thing.  When does the network cable go in?  I know some computers that are configured differently for network as opposed to stand alone config. Typically such changes occcurs on boot up.

Also when you are connected to the network are more drives available?  Can you use them properly? perhaps it is looking for a drive if it exists, and perhaps it is not behaving properly.  You might be able to mimic the network by using the subst command and see if a given drive existing matters.

After that I would recommend www.sysinternals.com and download and try ntfilmon.  Runnnig that at the same time might educate you what is happening in the background.
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