review(S): 7124829: NUMA: memory leak on Linux with large pages
vladimir.kozlov at oracle.com
Tue Dec 27 23:21:00 UTC 2011
Igor Veresov wrote:
> Right, thanks! I've updated the webrev.
> On Tuesday, December 27, 2011 at 10:40 AM, Vladimir Kozlov wrote:
>> You missed changes (additional parameter) in other OS files: bsd, solaris.
>> Igor Veresov wrote:
>>> The issue is with os::free_memory() changes made in 7060842 when the
>>> “madvise” call was replaced with “mmap”. This is the reason of
>>> exhaustive memory consumption. Seems when we need to remap some memory
>>> we need to do it using the same flags as we mapped it initially,
>>> particularly with “MAP_HUGETLB”. Otherwise system maps small pages
>>> instead of already reserved huge pages.
>>> Contributed by: Aleksey Ignatenko <aleksey.v.ignatenko at intel.com
>>> <mailto:aleksey.v.ignatenko at intel.com>>
>>> Webrev: http://cr.openjdk.java.net/~iveresov/7124829/webrev.00/
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