Deallocating memory pages

Jon Masamitsu jon.masamitsu at
Fri Feb 8 15:28:04 UTC 2013


We talked about it some.  I think the main question is what happens
in a situation that is tight on physical memory.
What happens when a page is deallocated
in this way with madvise and then the page is touched again and all
the physical memory on the system is in use?  Does the system just
start paging?   Have you seen this happen?

The main impediment for moving forward on this is that we
would need to implement this on other platforms and generally
people don't have any spare time at this point
in the JDK 8 schedule.

No one objected to the concept.  Just some concerns about
possible unexpected behavior on other platforms.  And who
could do the work.


On 2/7/2013 3:21 PM, Hiroshi Yamauchi wrote:
>>> I'll get feedback from the other GC guys and let you know what we
>>> want to do.
> Jon, is there any update?

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