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  1. JDK
  2. JDK-8215523

jstat reports incorrect values for OU for CMS GC

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Details

    • gc
    • b04

    Description

      With CMS GC, at certain points, 'OU' (Old usage) values reported in the jstat output increase first and then drop down. This is wrong because the 'old usage' drops down without any old generation collection.

      Attachments

        1. gc_jstat.log
          1.29 MB
        2. perf_jstat.log
          35.69 MB
        3. perf_jstat.sh
          0.6 kB
        4. test.java
          0.8 kB

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8229420 [Redo] jstat reports incorrect values for OU for CMS GC

          • P3 - Major loss of function.
          • Resolved

          Bug - A problem which impairs or prevents the functions of the product. JDK-8174741 Allocating direct memory should not eat the heap

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

          Bug - A problem which impairs or prevents the functions of the product. JDK-8227178 Backout of 8215523

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

          Activity

            People

              poonam Poonam Bajaj Parhar
              shadowbug Shadow Bug
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              Dates

                Created:
                Updated:
                Resolved: