Integrated: 8256416: ZGC: Lower ZMarkCompleteTimeout

Per Liden pliden at
Fri Nov 20 12:40:06 UTC 2020

On Tue, 17 Nov 2020 15:57:23 GMT, Per Liden <pliden at> wrote:

> With JEP-376 integrated, the ZMarkCompleteTimeout now essentially dictates how long the max GC pause will be in ZGC. Since our pauses are now on the order of 50-100us I propose we lower the ZMarkCompleteTimeout to 200us (instead of 1ms).
> Running the usual benchmarks, I can see no difference in number of mark continues, which suggests 200us is long enough to handle all common cases.

This pull request has now been integrated.

Changeset: aeba9259
Author:    Per Liden <pliden at>
Stats:     1 line in 1 file changed: 0 ins; 0 del; 1 mod

8256416: ZGC: Lower ZMarkCompleteTimeout

Reviewed-by: ayang, eosterlund



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