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  1. OpenNMS
  2. NMS-14237

Performance degradation compared to H29

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    • 8
    • Horizon - April 27 - May 11, Horizon - May 11 - 25

    Description

      We see severe performance issues on the latest H30 when using Newts/Cassandra.

      I made some tests, and I verified that H29.0.9 with 8 Cores and 32 GB of RAM (16 for the heap) could sustain 50K samples per second against a Cassandra cluster using stress-metrics -n 2000 -i 20 -t 8.

      I upgraded that VM to the latest H30 and re-executed that stress command without changing anything else, and now it can barely go over 33K samples per second. CPU usage is similar across both versions (slightly higher on H30), and running as root or non-root doesn't make any difference.

      With the OIA TSS Layer using the noops Plugin and four times more computing power, H30 hangs after 10 minutes (becomes unusable due to severe slowness and starvation in terms of CPU usage), but it's most probable unrelated and separated issue with OIA layer.

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              fooker Dustin Frisch
              agalue Alejandro Galue
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