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

John Cuthbertson john.cuthbertson at oracle.com
Tue May 28 17:44:01 UTC 2013


Hi Stefan,

Looks good.

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




More information about the hotspot-gc-dev mailing list