[comp.os.msdos.desqview] System memory

w8sdz@vela.acs.oakland.edu (Keith Petersen) (05/03/91)

Do all programs require system memory to be allocated?  When I run
change program (CP) to display/alter the DVP it shows zero K system
memory allocated but if I display the DVP with PIFEDIT (see DVPIF10.ZIP
in the DESQview directory on SIMTEL20), it shows 5K of memory memory
allocated.

Keith
w8sdz@vela.acs.oakland.edu

ALC@psuvm.psu.edu (05/03/91)

Quarterdeck recommends that you DO NOT allocate any system memory UNLESS
the application specifically indicates it is required. Perhaps there
is some system memory always allocated but DV doesn't include that in
the number showed in the CP command.


  /^/|^|    Alan Claver, Microcomputer Info Specialist                 |^|\^\
 / / | ||^| Penn State University Libraries                         |^|| | \ \
/_/  |_||_| E6 Pattee Library, University Park, PA 16802            |_||_|  \_\
     Ma Bell:(814) 865-7213--Bitnet:ALC@PSULIAS--Internet:ALC@PSUVM.PSU.EDU
            "In a calm sea every man is a pilot."  -- John Ray

ralf+@cs.cmu.edu (Ralf Brown) (05/03/91)

In article <6280@vela.acs.oakland.edu> w8sdz@vela.acs.oakland.edu (Keith Petersen) writes:
}Do all programs require system memory to be allocated?  When I run
}change program (CP) to display/alter the DVP it shows zero K system
}memory allocated but if I display the DVP with PIFEDIT (see DVPIF10.ZIP
}in the DESQview directory on SIMTEL20), it shows 5K of memory allocated.

The system memory displayed in Change a Program is *extra* system memory,
above and beyond that needed to hold the virtual (shadow) screen, interrupt
vectors, DV internal stuff, etc.  The .DVP field includes that overhead.

For an example of a value smaller than 5K, look at the Memory Status .DVP.
With a maximum screen size much less than 80x25, you'll also get a smaller
system memory value.

--
{backbone}!cs.cmu.edu!ralf  ARPA: RALF@CS.CMU.EDU   FIDO: Ralf Brown 1:129/3.1
BITnet: RALF%CS.CMU.EDU@CARNEGIE   AT&Tnet: (412)268-3053 (school)   FAX: ask
DISCLAIMER?  Did  | It isn't what we don't know that gives us trouble, it's
I claim something?| what we know that ain't so.  --Will Rogers

gilf@VMS.HUJI.AC.IL (GIL FREUND) (05/07/91)

In article <91123.111606ALC@psuvm.psu.edu>, ALC@psuvm.psu.edu writes...
>Quarterdeck recommends that you DO NOT allocate any system memory UNLESS
[text deleted]

I have been having problems with sporadic DESQview hangups. The two things that 
SEEMED to solve this problem were:

1. Allocating more system memory to some program (the main trouble maker beening
Xtree Pro Gold).
2. Increasing Common Memory to 30K.

Allthough none of those is recommended (nor properly documented), it seems to
do the trick. 
If anyone out there KNOWS what those options are supposed to be used for, and 
how to figure out the right parameters, Please inform me.

Gil