RFR: 8272807: Permit use of memory concurrent with pretouch

Mon Aug 23 16:02:24 UTC 2021

On Mon, 23 Aug 2021 11:35:18 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Performance testing hasn't found any regressions related to this change.

Are there any performance tests that actually check `-XX:+AlwaysPreTouch` performance? It is very likely that the OS trip to commit the page is vastly costlier than the atomic increment per page, but it would be nice to confirm.

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PR: https://git.openjdk.java.net/jdk/pull/5215