Uploaded image for project: 'JDK'
  1. JDK
  2. JDK-8166002

Emulate client build on platforms with reduced virtual address space

XMLWordPrintable

    • b156
    • x86
    • windows
    • Verified

        On 32-bit Windows, a limited amount of virtual address space (typically 2-3 GB) is available to processes. Running a server VM on 32-bit Windows is, therefore, unfeasible, as C2 compilation can consume virtual memory up to 1 GB.

        Before JDK-8154209, client builds were used to execute tests on 32-bit Windows platforms. Since JDK-8154209, however, tests are executed with a server VM that causes many tests to fail on 32-bit Windows. Customers running applications on 32-bit Windows are likely to be negatively affected as well.

        The goal of this bug is to emulate a client build on 32-bit Windows platforms using a standard tiered build. More specifically, the following should be performed:
        - set TieredStopAtLevel to 1 by default (so that only C1 compilations are performed in the system)
        - adjust tiered compilation thresholds so that in the emulated client build C1 compilation happens around the same time as in a "real" client build;
        - set the size of the code cache to a value used in client builds before
        - (optional) do not start C2 compiler threads in the emulated client build
        - (optional) use ParallelGC instead of G1

        Success criteria:
        - measured memory usage with TreePostTest.java executed with -Xmx512m is < 1GB.

          1. #914_hs_err_pid29960.log
            41 kB
          2. #914_replay_pid29960.log
            552 kB
          3. hs_err_pid24996.log
            46 kB
          4. replay_pid24996.log
            708 kB
          1.
          		 Add documentation for JDK-8166002 to Tools Reference Guide Sub-task Resolved Clifford Wayne (Inactive) 2017-02-24
          2.
          		 Release Note: Emulate client build on platforms with reduced virtual address space Sub-task Closed Jamsheed C M (Inactive)  

              jcm Jamsheed C M (Inactive)
              xiaofeya Xiaofeng Yang
              Votes:
              0 Vote for this issue
              Watchers:
              20 Start watching this issue

                Created:
                Updated:
                Resolved: