review(S): 7124829: NUMA: memory leak on Linux with large pages

Igor Veresov igor.veresov at oracle.com
Tue Dec 27 23:09:39 UTC 2011


Right, thanks! I've updated the webrev.  

igor


On Tuesday, December 27, 2011 at 10:40 AM, Vladimir Kozlov wrote:

> You missed changes (additional parameter) in other OS files: bsd, solaris.
>  
> Vladimir
>  
> 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/
> >  
> > igor  

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