RFR(s): 8067187: -XX:MaxMetaspaceSize=20m -Xshare:dump caused JVM to crash

Jiangli Zhou jiangli.zhou at oracle.com
Wed Dec 17 00:42:35 UTC 2014

Hi Calvin,

After looking more into the code, I think we don't have enough size 
information for doing the check in Metaspace::global_initialize(). 
That's because the metaspace has other memory usages other than the 
shared spaces.


On 12/15/2014 11:12 AM, Jiangli Zhou wrote:
> Hi Calvin,
> Would it better to do the size check in Metaspace::global_initialize() 
> along with the rest of the shared space size checks?
> Thanks,
> Jiangli
> On 12/12/2014 12:42 PM, Calvin Cheung wrote:
>> JBS: https://bugs.openjdk.java.net/browse/JDK-8067187
>> This fix is to add a check on the MaxMetaspaceSize when performing 
>> CDS archive dumping.
>> With the fix, instead of a crash, it will print and error message 
>> like the following and exit:
>> Java HotSpot(TM) 64-Bit Server VM warning:
>> The MaxMetaspaceSize of 20971520 bytes is not large enough.
>> Either don't specify the -XX:MaxMetaspaceSize=<size>
>> or increase the size to at least 33554432.
>> Tested manually via command line and jtreg test on the new test.
>> webrev: http://cr.openjdk.java.net/~ccheung/8067187/webrev/
>> thanks,
>> Calvin

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