General sampling heap allocation event

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    • Type: Enhancement
    • Resolution: Duplicate
    • Priority: P3
    • 16
    • Affects Version/s: 14
    • Component/s: hotspot
    • jfr

      After seeing first hand how useful allocation profiling events are in production, but also how extremely expensive they are, we really need to introduce a less costly sampling heap allocation event. One that gives a statistically accurate picture of how much memory is allocated along with the stack traces, but that has a more configurable emission rate. For certain high allocation loads, the recordings can get quite large and they can also introduce quite a bit of overhead.

            Assignee:
            Jaroslav BachorĂ­k
            Reporter:
            Marcus Hirt
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              Created:
              Updated:
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