Review request: 8015268: NPG: 2.5% regression in young GC times on CRM Sales Opty

Stefan Karlsson stefan.karlsson at oracle.com
Tue May 28 18:07:17 UTC 2013


On 5/28/13 7:44 PM, John Cuthbertson wrote:
> Hi Stefan,
>
> Looks good.

Thanks!
StefanK

>
> JohnC
>
> On 5/27/2013 6:57 AM, Stefan Karlsson wrote:
>> http://cr.openjdk.java.net/~stefank/8015268/webrev.00
>>
>> 8015268: NPG: 2.5% regression in young GC times on CRM Sales Opty
>> Summary: Split SystemDictionary and ClassLoaderDataGraph root 
>> processing to help load balancing.
>>
>> The ClassLoaderDataGraph was added in the PermGen removal project and 
>> the he root processing of it was added to the system dictionary task, 
>> instead a separate phase/task. This patch splits the two tasks, so 
>> that they can be run in parallel.
>>
>> It has been verified that this patch reduces the Parallel Scavenge 
>> young GC times with about 9% in the CRM Sales Opty benchmark.
>>
>> thanks,
>> StefanK
>




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