|
PureBytes Links
Trading Reference Links
|
Thanks for the clarification.
Though, what I was trying to say was that it would be a shame to run a 64 bit OS, finally allowing access to a full 4GB of virtual memory per 32 bit application, only to have those memory hungry applications still have to fight each other, through page swapping, in order to make use of it. Two steps forward, one step back.
Mike
--- In amibroker@xxxxxxxxxxxxxxx, Tomasz Janeczko <groups@xxx> wrote:
>
> Hello,
>
> This is quite common misconception about memory.
> In virtual memory OSes the amount of RAM is NOT equal to the amount of
> virtual memory available to the process.
>
> Virtual memory available to 32-bit processes running under 64-bit
> Windows is equal to 4GB
> *REGARDLESS* of amount of RAM installed.
>
> The process does NOT see "RAM". All it sees is *virtual* memory that is
> on-demand mapped to RAM
> and this mapping changes all the time as memory pages are swapped in and
> out.
>
> Best regards,
> Tomasz Janeczko
> amibroker.com
>
> On 2010-01-21 21:40, Mike wrote:
> > There is little to no difference between running a 32 bit app on a 64 bit OS vs. 32 bit OS (i.e. no performance hit).
> >
> > Where you can see a difference, favorably, is if the 32 bit application is memory intensive. I believe that a 64 bit OS will allow the 32 bit application to run using up to a full 4GB of RAM, vs. the 3GB max of a 32 bit OS. This is particularly evident when running multiple memory intensive 32 bit apps simultaneously (each with up to 4GB RAM).
> >
> > However, running a 64 bit OS with only 3 GB of memory is a crime against computing! There is little (anything?) to be gained by running 32 bit applications on a 64 bit OS without making available the additional memory that the 64 bit OS would allow. Gaining access to additional RAM is among, if not THE, most desirable aspects of a 64 bit OS.
> >
> > Mike
> >
> > --- In amibroker@xxxxxxxxxxxxxxx, "Barry"<razzbarry@> wrote:
> >
> >> I have an Intel core 2 duo processor and would like to know if things run faster with the 64 bit OS over the 32 bit. Most of my programs are 32 bit and I had heard that running them on a 64 bit system makes them slower. Is that true? If I am going to upgrade to windows 7 I might as well use the faster OS version if it helps performance. I have only 3GB of memory if that makes a difference.
> >>
> >> I guess device drivers could be a nightmare too.
> >>
> >> Thanks,
> >> Barry
> >>
> >>
> >
> >
> >
> > ------------------------------------
> >
> > **** IMPORTANT PLEASE READ ****
> > This group is for the discussion between users only.
> > This is *NOT* technical support channel.
> >
> > TO GET TECHNICAL SUPPORT send an e-mail directly to
> > SUPPORT {at} amibroker.com
> >
> > TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
> > http://www.amibroker.com/feedback/
> > (submissions sent via other channels won't be considered)
> >
> > For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
> > http://www.amibroker.com/devlog/
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
------------------------------------
**** IMPORTANT PLEASE READ ****
This group is for the discussion between users only.
This is *NOT* technical support channel.
TO GET TECHNICAL SUPPORT send an e-mail directly to
SUPPORT {at} amibroker.com
TO SUBMIT SUGGESTIONS please use FEEDBACK CENTER at
http://www.amibroker.com/feedback/
(submissions sent via other channels won't be considered)
For NEW RELEASE ANNOUNCEMENTS and other news always check DEVLOG:
http://www.amibroker.com/devlog/
Yahoo! Groups Links
<*> To visit your group on the web, go to:
http://groups.yahoo.com/group/amibroker/
<*> Your email settings:
Individual Email | Traditional
<*> To change settings online go to:
http://groups.yahoo.com/group/amibroker/join
(Yahoo! ID required)
<*> To change settings via email:
amibroker-digest@xxxxxxxxxxxxxxx
amibroker-fullfeatured@xxxxxxxxxxxxxxx
<*> To unsubscribe from this group, send an email to:
amibroker-unsubscribe@xxxxxxxxxxxxxxx
<*> Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
|