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

Thomas Schatzl thomas.schatzl at oracle.com
Tue May 28 09:15:11 UTC 2013


Hi,

On Mon, 2013-05-27 at 15:57 +0200, 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.

Looks straightforward enough. Seems okay.

Thomas





More information about the hotspot-gc-dev mailing list