RFR: 8057037: Verification in ClassLoaderData::is_alive is too slow

[Mikael Gerdin]

Hi Stefan,

On 2014-09-02 15:03, Stefan Karlsson wrote:
> Hi all,
>
> Please review this patch to remove some verification code that was added
> during the G1 Class Unloading project. The code was added to make sure
> we catch any class unloading bugs as early as possible. This
> verification code is run too often and is causing large GC times in our
> fastdebug test runs. In one of the tests I investigated, the Full GCs
> take 8 seconds with this verification and 0.2 seconds without it. Most
> of the verified pointers are already verified before and after GCs in
> ClassLoaderDataGraph::verify().
>
> http://cr.openjdk.java.net/~stefank/8057037/webrev.00/

Looks good.
Thanks for fixing this.

/Mikael

>
> thanks,
> StefanK