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That's not quite true. Cacheman 3.8 partially manipulates the Disk Cache by
using SYSTEM.INI. For those of you who don't know, Windows 9x has 2 ways
dealing with memory: the Swapfile and the Disk Cache. The Swapfile is used
when you don't have enough physical memory and the Disk Cache is physical memory
set aside for tasks which are repeatedly used. On my system, Cacheman 3.8 uses
these 2 commands to set the size of the Disk Cache to 21,000 KB:
[vcache]
chunksize=2048
maxfilecache=21000
BTW, to avoid using an exotic virtual memory program, I tried increasing the
Disk Cache. The maximum you can increase it is to about 55 MB, not enough to
place the entire QP database into memory.
Windows 9x uses numerous other commands in the SYSTEM.INI file to customize your
setup. If you set limits to the Swapfile size, the settings are placed in
SYSTEM.INI. If you want a DMA memory buffer, when you set the DMA size in your
Device Manager, the setting is placed in your SYSTEM.INI. MANY multimedia
DLL's, etc..., are placed into SYSTEM.INI.
Daniel.
Bob Jagow wrote:
> Nope [since system.ini applies only to 16-bit code].
> There may be some corresponding registry entries but I'd leave them alone.
>
> Bob
>
> > -----Original Message-----
> > From: owner-metastock@xxxxxxxxxxxxx
> > [mailto:owner-metastock@xxxxxxxxxxxxx]On Behalf Of jr
> > Sent: Friday, November 03, 2000 1:23 PM
> > To: metastock@xxxxxxxxxxxxx
> > Subject: Re: The need for speed
> >
> >
> > Very interesting indeed, thanks,
> > however, that probably doesn't
> > apply to Win NT / Win2K, does it?
> >
> >
> > ----- Original Message -----
> > From: "neo" <neo1@xxxxxxxxx>
> > To: <metastock@xxxxxxxxxxxxx>
> > Sent: Friday, November 03, 2000 9:55 PM
> > Subject: The need for speed
> >
> >
> > > I believe that, although important, the processor and memory speed are
> > over
> > > emphasised. The real bottleneck is your hard drive. It runs so
> > much slower
> > > than any other part of the system. The key is to have your
> > entire program
> > > and data in RAM. There are 2 things required. The first is to
> > have enough.
> > > For me this is 512 MB. (This can be decreased by minimising
> > other programs
> > > running. The 2nd is to look in the Microsoft Knowledge Base for
> > an article
> > > on ConservativeSwapfileUsage. If this is set to =1 in [386Enh] of
> > SYSTEM.INI
> > > it forces Windows to use all available RAM before the swapfile on your
> > disk.
> > > Normally Windows will use 50% of RAM and then start using the
> > swapfile on
> > > your disk. This is probably a holdover from when we had tiny MBs of RAM.
> > If
> > > you have Norton SystemWorks or another program to monitor RAM
> > and swapfile
> > > (virtual memory) used you will see the difference at once.
> > >
> > > In a recent example, in another program, I had pulled out a 128 MB card
> > and
> > > the time it took to open a chart went from < 1 second to about
> > 20 seconds
> > as
> > > I saw my hard drive searching for the data.
> > >
> > > One other note. I have heard from various sources that programs leak
> > memory.
> > > That is, if you use a program all, or part, of it will remain in RAM and
> > not
> > > be available to other programs. I cannot confirm this. The program does
> > stay
> > > in memory but I believe it is over written as needed. If this
> > leak is true
> > > then it would help to reboot you system from time to time.
> > >
> > > Disclaimer: I have been doing this for well over a year with Win98 (1st
> > Ed.)
> > > and it works great without a single problem. If you do this I have no
> > > responsibility for what might happen to your system. Look at MS's
> > Knowledge
> > > Base and try it if YOU decide to. This is only my personal information.
> > >
> > > -----Original Message-----
> > > From: owner-metastock@xxxxxxxxxxxxx
> > > [mailto:owner-metastock@xxxxxxxxxxxxx]On Behalf Of Rance Nunes
> > > Sent: Friday, November 03, 2000 12:13 PM
> > > To: metastock@xxxxxxxxxxxxx
> > > Subject: Real-time screening of multiple stocks possible?
> > >
> > >
> > > In MetaStock Professional the documentation states that (paraphrasing)
> > > The Explorer's performance is significantly slower on intraday data
> > > while collecting real-time data.
> > >
> > > Can real-time searches be performed in MetaStock Pro?
> > >
> > > If so what is the order of magnitude of stocks that can be screened in
> > > real-time? That is, if a real-time Exploration is designed, how many
> > > simultaneous stocks can be screened when using tick by tick information
> > > while
> > > collecting real-time data? (Say on a 1-Gigahertz Pentium III with 256
> > Megs
> > > of
> > > memory).
> > >
> > > Any assistance is appreciated.
> > >
> > > Thanks.
> > >
> > > Rance
> > >
> > >
> >
> >
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