RFR: 8290344: Start/stop displaysync affects performance in metal rendering pipeline

[Phil Race]

On Fri, 15 Jul 2022 11:32:20 GMT, Alexey Ushakov <avu at openjdk.org> wrote:

> Reuse displaysync thread for subsequent updates

Looking at the RenderPerfTest numbers ClipFlatOvalAA went down .. but everything else improved by at the very least a statistically significant amount so why did that one test get worse ?

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PR: https://git.openjdk.org/jdk/pull/9512