Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8259231

Epsilon: improve performance under contention during virtual space expansion

    XMLWordPrintable

    Details

    • Subcomponent:
      gc
    • Resolved In Build:
      b05

      Backports

        Description



        This is on behalf of <lehuading@tencent.com>

        The `EpsilonHeap::allocate_work` method maybe can be fixed and improved by this:
        1. it can prevent allocate failure by retry `_space->par_allocate` before expanding virtual space, when there not enough virtual space but another thread expanding succeeded just and has enough space.
        2. it can reduce the lock time by move `res = _space->par_allocate(size);` out of lock scope.

          Attachments

            Issue Links

              Activity

                People

                Assignee:
                shade Aleksey Shipilev
                Reporter:
                jiefu Jie Fu
                Votes:
                0 Vote for this issue
                Watchers:
                5 Start watching this issue

                  Dates

                  Created:
                  Updated:
                  Resolved: