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  1. JDK
  2. JDK-8245754

Shenandoah: ditch ShenandoahAlwaysPreTouch

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      Description

        ShenandoahAlwaysPreTouch flag dates back to the times when ShenandoahHeap used VirtualSpace for reserving/committing heap. To workaround single-threaded pretouch code in VirtualSpace, a new flag was needed:
         https://mail.openjdk.java.net/pipermail/shenandoah-dev/2016-October/000892.html

        That code is long gone now, and current Shenandoah just reserves/commits from OS directly. Therefore, this flag is no longer needed. It actually confuses logging in JDK-8245720.

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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8246089 Shenandoah: ditch ShenandoahAlwaysPreTouch

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8246529 Shenandoah: ditch ShenandoahAlwaysPreTouch

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            blocks

            Enhancement - null JDK-8245720 Shenandoah: improve configuration logging

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved

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                shade Aleksey Shipilev
                shade Aleksey Shipilev
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                  Updated:
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