Tuning ShenandoahGC with 420 GB heaps

[Aleksey Shipilev]

On 3/5/19 3:00 PM, Aleksey Shipilev wrote:
> On 3/5/19 2:07 PM, Edwin Graven wrote:
>> Okay so THP is a bug, is there any change it will be possible to use LargePages instead of THP
>> like we do with G1?? If you can use LargePages there won’t be any risk of using swap.
> Yes, except the teeny-tiny detail that hugetlbfs support is also broken (argh):
>   https://bugs.openjdk.java.net/browse/JDK-8220162
> 
> If everything goes right, patches would hit jdk/jdk (development head) this week, and Roman would
> backport them to 11u and 8u next week.

That took longer to figure out, but we have THP/LP fixes in 11u and 8u nightlies:
  https://builds.shipilev.net/openjdk-shenandoah-jdk11/
  https://builds.shipilev.net/openjdk-shenandoah-jdk8/

You might want to try them.

-Aleksey