do android has virtual memory.

[arun gupta]

does android have virtual memory.plz give some pointers abt it.

regards
Arun Gupta

[Ubuntu guy]

It doesn't swap pages in and out of memory and uses low memory killer
to handle low memory scenarios and free memory for new applications...

[Dianne Hackborn]

To be a little more specific, it does use paging but not swap space.  That is, it relies heavily on being able to mmap() files and have the kernel page in data from the file as needed (and drop those pages when not needed).  It does not however use swap space for paging out dirty pages.

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Dianne Hackborn
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[arun gupta]

[arun gupta]

thank you for the responses ....

[arun gupta]

hi all,
the android phone has a RAM memory of 1GB now in a 32 bit address space of arm arch. are we able to get additional 3gb space.if yes from where we get that memory.

regards
Arun Gupta

[Dianne Hackborn]

Er, add the RAM chips to your device?

[Xiao-Feng Li]

On Wed, Apr 18, 2012 at 5:33 PM, arun gupta <arungu...@gmail.com> wrote:
> hi all,
> the android phone has a RAM memory of 1GB now in a 32 bit address space of
> arm arch. are we able to get additional 3gb space.if yes from where we get
> that memory.
>
> regards
> Arun Gupta
>

You get that space already but just not all in physical memory at the
same time. I guess mostly you don't really need all of them in
physical memory at the same time for Android devices. At least it is
not the case in my running Android.

Thanks,
xiaofeng

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