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RE: filmscanners: SS4000, Win98 and VCache settings



I have 512MB RAM on a Win98 (not SE) Athlon 1.2GHz PC and my vcache section
is empty.  Windows does its own thing which, with a large RAM PC, is
probably the best thing.  My cache tends to range from 24MB to 180MB.  (Use
the SYSMON program to draw a graph of your cache size.)

Jawed

> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Steve Greenbank
> Sent: 24 July 2001 04:24
> To: filmscanners@halftone.co.uk
> Subject: Re: filmscanners: SS4000, Win98 and VCache settings
>
>
> Changing the VCache settings should not alter the result, only
> the speed at
> which you receive the result :- )Except where you hit the
> Win9x/ME bug where
> you must set a value less than 512MB if you have more physical memory than
> 512MB.
>
> As this does not apply to you it suggests you have a problem
> elsewhere. The
> fact that the new Vcache settings leave more physical memory
> available might
> mean you have a physical memory problem in an area of memory not
> used by the
> new setting. It may also be due to a physical memory problem
> being moved to
> a more critical point. eg. dodgy memory used for picture storage may have
> almost undetectable effect on an image but would crash most programs if it
> was used for program code.
>
> Likely sources are:
> 1) Polarcolor insight problem (try re-installing - anyone else having
> problems - try 5.0)
> 2) Physical memory problem (try a decent memory tester or different memory
> or if you can, remove half at a time) - or try "torture test" in Prime95 (
> http://www.mersenne.org/freesoft.htm ) - this thrashes cpu & memory
> severely.
> 3) SCSI device or driver problem (try re-installing or removing other
> devices)
> 4) BIOS setup issue (careful with this as you can really screw
> your machine)
> 5) Problem with a background process (eg.virus program) (remove all
> non-essential background processes)
> 6) Other device or driver problem (disable as many devices as possible -
> physical removal is better)
> 7) Software conflict problem (particularly related to other SCSI devices)
> (temporarily remove other devices)
>
> To check properly you will after to find a set of scan settings that will
> reboot your machine everytime - preferably immediately after just booting.
>
> Otherwise your current setting for MaxFileCache is a bit low and will
> probably slow your machine down. Using a value that is slightly
> larger than
> your typical TIFF file can make open & save work much quicker provided you
> don't overly restrict available RAM to the actual programs. This
> can be seen
> most clearly during a save operation. (eg 35mm 4000dpi is about 54MB 8bit
> and 108MB 16bit so try around 55000/110000 depending on whether you use a
> lot of 16bit files).
>
> Steve
>
> ----- Original Message -----
> From: "Stan Schwartz" <snsok@swbell.net>
> To: "Filmscanners (E-mail)" <filmscanners@halftone.co.uk>
> Sent: Monday, July 23, 2001 10:06 PM
> Subject: filmscanners: SS4000, Win98 and VCache settings
>
>
> > I use an SS4000 on a SCSI connection with a Win98SE 933 PentiumIII and
> 512MB
> > RAM.
> >
> > I was having some problems with the system doing a reboot in
> the middle of
> > scanning a transparency, usually with Polacolor Insight. I posted that
> here
> > a couple of weeks ago and got some suggestions.
> >
> > I also use my computer for speech recognition software (not at the same
> > time, of course). In the process of tweaking the computer for better
> speech
> > recognition, I made some changes in the Vcache settings.
> >
> > After making those "improvements," I was unable to scan a single slide
> > without the system suddenly rebooting. It seems there is a connection
> > between these Vcache settings and the problems I have had.
> >
> > Does anyone have experience with tweaking the Vcache settings for a SCSI
> > slide scanner? I have used a couple of the shareware type programs that
> > suggest values for "power users" and "multimedia" and "low memory
> systems".
> >
> > I just changed the settings in system.ini to:
> >
> > [vcache]
> > MaxFileCache=16384
> > MinFileCache=3144
> >
> >
> >
> > The settings I had been using were min=0, max=131,000 (that was
> > approximate--it was a correct multiple) with chunk size
> specified as 4096.
> >
> > Now I can finish a scan, but I have no clue what the optimum setting
> should
> > be, or if it should be specified at all.
> >
> >
> > Stan
> >
> >
>
>




 




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