RFR: 8236153: ZGC: gc/z/TestUncommit.java fails with java.lang.Exception: Uncommitted too fast

[erik.osterlund at oracle.com]

Hi Per,

Looks good.

/Erik

On 1/13/20 4:12 PM, Per Liden wrote:
> The test gc/z/TestUncommit.java fails now and then on Windows when 
> using -Xcomp. This test can fail if it's severely starved on CPU, as 
> it will cause the timing to be off. The logs confirms that the test 
> took an unusually long time to execute, suggesting it was starved on 
> CPU. This only happens in test tiers using -Xcomp, which is likely 
> causing the unusually high load. This patch disables this test when 
> using -Xcomp. I've enabled some GC logging, which should helpful if 
> this test ever fails again.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8236153
> Webrev: http://cr.openjdk.java.net/~pliden/8236153/webrev.0
>
> /Per