Re: Is demand paging enabled in linux kernels of Android?

[Dave Hylands <dhylands@xxxxxxxxx>]

Hi Sandeep,


On Wed, Mar 19, 2014 at 9:06 AM, manty kuma <mantykuma@xxxxxxxxx> wrote:
>
> Thanks david. So my next question was that is it enabled in linux kernel that android uses. How do i confirm it?

Perhaps put a sleep(30) right at the start of main()

Run your program.

Look at /proc/PID/status

Then when the sleep is finished and your program continues executing, look at /proc/PID/status again

To do the test properly you'd probably need to generate some code which has lots of no-ops (maybe a megabytes worth), and look at /proc/PID/status before and after executing that function.

I think that as more code gets paged in you'll see VmRSS increase. IIRC VmRSS also includes your heap and stack.

--
Dave Hylands
Shuswap, BC, Canada
http://www.davehylands.com

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