Review request (hs24): 8007074: SIGSEGV at ParMarkBitMap::verify_clear()

Stefan Karlsson stefan.karlsson at
Wed Jul 10 08:09:14 PDT 2013

On 07/09/2013 05:01 PM, Florian Weimer wrote:
> On 07/09/2013 04:21 PM, Stefan Karlsson wrote:
>> Note that we recently changed from using PROT_READ|PROT_WRITE to
>> PROT_NONE when reserving memory in JDK8:
> Very cool.  I can confirm that this change resolves the long-standing 
> issue with the standard heap size (a quarter of RAM) and 
> vm.overcommit_memory=2 mode.  Previously, you could not start more 
> than 3 VMs in parallel, and with the change, that limitation is lifted.
> Any chance we can backport this change to hs24 and jdk7u?

Unfortunately, it's not likely that we'll get this into the hs24 release.


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