Here's a question. How much memory will a 32bit application use on a 64bit machine?

[Django x2]

If I use to invoke the /pae /userva switch on a 32bit server to allow maximum address space for an application, what happens when I move that application to a x64 machine?

Does it just use as much memory as it wants, or will ultimately the application itself limit how much memory it uses?

 

[Django x2]

So will it use 4Gb if it was able to?

 

[Django x2]

I think it might be only 2GB for a 32-bit app.

Which leads me to the question as to why bother with a pae userva switch if the app will actually only ever use 2Gbs.

I understand you use the above switches to allow the app to use 3Gb and the OS to use the rest (in simple terms)

 

[Django x2]

*snip

Thanks, that makes sense