There are plans for adding one to hotspot[1]. As I understand it it can&#x27;t use the same tricks as C4 because that would require kernel support, but unlike CMS it will be compacting, thus avoiding the terrible failure modes of CMS.<p>There also is some work being done to make the CMS failures a little less terrible by parallelizing them.[2]<p>[1] <a href="http:&#x2F;&#x2F;openjdk.java.net&#x2F;jeps&#x2F;189" rel="nofollow">http:&#x2F;&#x2F;openjdk.java.net&#x2F;jeps&#x2F;189</a>
[2] <a href="https:&#x2F;&#x2F;bugs.openjdk.java.net&#x2F;browse&#x2F;JDK-8086706" rel="nofollow">https:&#x2F;&#x2F;bugs.openjdk.java.net&#x2F;browse&#x2F;JDK-8086706</a>