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 [email protected], "Tomasz Janeczko" <gro...@...> 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...@...>
> To: <[email protected]>
> 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 [email protected], "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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