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  1. Apache Cassandra
  2. CASSANDRA-17408

Humongous Allocations after upgrading to 4.0

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Details

    • Bug
    • Status: Resolved
    • Normal
    • Resolution: Not A Problem
    • 4.0.x, 5.x
    • Build
    • None
    • Degradation
    • Normal
    • Normal
    • User Report
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    • None

    Description

      I have seen reports of increased Humongous Allocations after upgrading to 4.0 when using G1. This is extremely detrimental to how G1 operates and seriously affects GC pauses.

      Attachments

        1. 3.11-gc.log.0.current
          3.32 MB
          Brandon Williams
        2. 311-10M-read.html
          11 kB
          Brandon Williams
        3. 311-10M-write.html
          29 kB
          Brandon Williams
        4. 4.0-gc.log.0.current
          6.85 MB
          Brandon Williams
        5. 40-10M-read.html
          18 kB
          Brandon Williams
        6. 40-10M-write.html
          28 kB
          Brandon Williams

        Issue Links

          relates to

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-17655 Prevent JVM Humongous allocations

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              brandon.williams Brandon Williams
              brandon.williams Brandon Williams
              Brandon Williams
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              Dates

                Created:
                Updated:
                Resolved: