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If anyone is interested in a technical article around windows memory, Mark Russinovich has a great blog post called Pushing the Limits of Windows: Virtual Memory at http://blogs.technet.com/markrussinovich/archive/2008/11/17/3155406.aspx where he covers topics such as virtual memory, private bytes, committed memory, etc.
Tuzo
--- In amibroker@xxxxxxxxxxxxxxx, "Tomasz Janeczko" <groups@xxx> wrote:
>
> Hello,
>
> Windows Task Manager you say.
> Do you know that WTM can display dozen of different "memory usage" figures
> and most of them are misleading?
> Windows works with Virtual memory. RAM is NOT allocated to process. Virtual memory is.
> Then, on the fly, virtual memory pages are mapped to RAM and used, but one second later
> the same RAM cells can be (re)used by different process and different virtual memory address.
>
> So called "mem usage" in WTM is not total memory usage, but working set size.
> http://technet.microsoft.com/en-us/library/cc938567.aspx
>
> Total memory usage is shown as "private bytes" (aka "virtual memory size").
>
> Also if you run 32 bit OS, it will allow only 2GB to be used for apps, regardless how much RAM you have
> (or 3GB with /LARGEADDRESSAWARE and /3G boot ini switch)
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
> ----- Original Message -----
> From: "reefbreak_sd" <reefbreak_sd@xxx>
> To: <amibroker@xxxxxxxxxxxxxxx>
> Sent: Tuesday, November 17, 2009 6:58 AM
> Subject: [amibroker] Re: How much ram is being used.
>
>
> > The details are different on various Windows versions, but press CTRL+ALT+DELETE and you will get windows task manager. Click on
> > the Performance dropdown and you can see your memory usage as you run and exit various programs.
> >
> > Just for Example:
> > I run Win Vista (hate it !) with 4gbytes of RAM. I run AB in real time mode with data from IQ Feed. One processor runs AB and
> > the other processor runs IQ Feed data manager. Both CPU's are busy about 50% of the time and I'm using just over 2gbytes or RAM.
> > There is no page file activity on the disk.
> >
> > ReefBreak
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "jmdeacon" <jmdeacon@> wrote:
> >>
> >> I am considering buying a new computer and was wondering if there was a way to figure out how much Ram I am using. I am not a
> >> programmer by profession and have self taught myself a fair amount, but sometimes my assumptions about computers etc are just
> >> plain wrong, so let me no if my thinking is correct.
> >>
> >> I noticed when I run an optimization, the first pass will take about 3 minutes and then each subsequent step takes about 1
> >> minute. I noticed a while ago that when I installed more ram, the first step time did not change as much as the additional step
> >> times. I am assuming that the amount of ram is part of this. If the amount of ram is more than the amount of data loaded in to
> >> be tested, then I will minimize the time for each additional step after the first pass.
> >>
> >> If I am correct of this, is there a way to find out how much ram that threshold is on my system?
> >>
> >> Thanks,
> >>
> >> John
> >>
> >
> >
> >
> >
> > ------------------------------------
> >
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> >
>
------------------------------------
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