Please review fix for 7196103: NPG: Unable to allocate bit map for parallel garbage collection for the requested heap size

[Coleen Phillimore]

On 9/7/2012 12:30 PM, Vladimir Kozlov wrote:
> arguments.cpp:
>
>   // 100,000 classes seems like a good size, so 100M assumes around 
> 100 bytes
>
> 100Mb/100000 = 1Kb, not 100 bytes :)
oh, yeah, there's a missing zero.
Thanks!
Coleen
>
> Otherwise looks good.
>
> Thanks,
> Vladimir
>
> Coleen Phillimore wrote:
>>
>> Please reload.  I incorporated some suggestions and corrections from 
>> stefank and did some tuning of the class metaspace size.
>>
>> Thanks,
>> Coleen
>>
>> On 9/7/2012 7:22 AM, Coleen Phillimore wrote:
>>> Summary: Don't allocate huge class metaspace size by default on x64
>>>
>>> This was preventing other mmap regions from being initialized on 
>>> windows 64.  I also added some checking around the 
>>> ClassMetaspaceSize option.  1*M seems to be minimal for startup size
>>>
>>> open webrev at http://cr.openjdk.java.net/~coleenp/7196103/
>>>
>>> Thanks,
>>> Coleen
>>>
>>>