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  1. JDK
  2. JDK-8237354

Add option to jcmd to write a gzipped heap dump

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    • Resolved In Build:
      b27

      Backports

        Description

        An option should be added to the GC.dump_heap command, to write the hprof file in gzipped format.

        This usually saves a lot of space (about factor 3 in our tests).

        Heap hero already let's you upload gzipped hprof files. And the Eclipse Memory Analyzer (MAT) has recently got this feature (see https://bugs.eclipse.org/bugs/show_bug.cgi?id=438844), which should be in the next official release.

        Since the deflate algorithm used in the gzip format is not very fast, the compression should be done in parallel as far as possible.

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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-8248076 Add option to jcmd to write a gzipped heap dump

            • 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-8273668 Add option to jcmd to write a gzipped heap dump

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

            CSR - null JDK-8243244 Add option to jcmd to write a gzipped heap dump

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8273559 Shenandoah: Shenandoah should support multi-threaded heap dump

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8247560 Shenandoah: heap iteration holds root locks all the time

            • P2 - Crashes, loss of data, severe memory leak.
            • Closed

            Enhancement - null JDK-8247575 serviceability/dcmd/gc/HeapDumpCompressedTest unlocks experimental options for Shenandoah and Z

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8247362 HeapDumpCompressedTest.java#id0 fails due to "Multiple garbage collectors selected"

            • P3 - Major loss of function.
            • Resolved

            Bug - A problem which impairs or prevents the functions of the product. JDK-8252731 -gz option for GC.heap_dump isn't recognized

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

            Bug - A problem which impairs or prevents the functions of the product. JDK-8255661 TestHeapDumpOnOutOfMemoryError fails with EOFException

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

            Commit Commit openjdk/jdk11u-dev/1868c15d

            Review Review openjdk/jdk11u-dev/209

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                Assignee:
                rschmelter Ralf Schmelter
                Reporter:
                rschmelter Ralf Schmelter
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                  Updated:
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