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From:	Bernard Dautrevaux <Dautrevaux AT microprocess DOT com>
To:	"'David A. Cobb'" <superbiskit AT home DOT com>,
	Cygwin General MailList
	<cygwin AT cygwin DOT com>
Subject:	RE: Windows expertise needed: what are MinSPs
Date:	Thu, 1 Mar 2001 10:09:18 +0100
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.5.2650.21)

> -----Original Message-----
> From: David A. Cobb [mailto:superbiskit AT home DOT com]
> Sent: Thursday, March 01, 2001 1:23 AM
> To: Cygwin General MailList
> Subject: Windows expertise needed: what are MinSPs
> 
> 
> Working in Xemacs-i686-pc-Cygwin-21.1.13 and a [virtual] host 
> of Cygwin
> tools, when up popped the devil - BSOD - and said:
>     Stack Frames nearly exhausted, try increasing MinSPs in 
> SYSTEM.INI,
>     MinSPs = 4
> 
> So, first thing today I tried launching Cygwin and the whole 
> darn system
> just stalled.  After 3 or 4 reboots, I added
> SYSTEM.INI [386enh] MinSPs=8
> 
> Not only did I get up and running, things seemed to start a 
> bit quicker.
> 
> NOW, what have I done?   Maybe a bigger number would be even better?
> Maybe we all should boink it up a notch?

You're running Win95 or Win98 isn't it?

There 32-bit DRIVERS are allocated a default 1-page stack (that is 4kbyte).
If there is a stack overflow, Win98 will look in a pool of Spare Stack pages
to grow the driver's stack. It's this set of spare stack pages you are
increasing by setting MinSPs :-)

Note that you must always increase it by 4 (i.e. set it to 8, 12, etc.)
according to Microsoft... Now, why do you have stack overflows in 32-bit
drivers is another history but you should have corrected the problem if you
no more get the same message :-)

HINT: have you installed anything on your computer recently? 

HTH

	Bernard
 
--------------------------------------------
Bernard Dautrevaux
Microprocess Ingenierie
97 bis, rue de Colombes
92400 COURBEVOIE
FRANCE
Tel:	+33 (0) 1 47 68 80 80
Fax:	+33 (0) 1 47 88 97 85
e-mail:	dautrevaux AT microprocess DOT com
		b DOT dautrevaux AT usa DOT net
-------------------------------------------- 

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