pnowojski commented on issue #10529: [FLINK-15171] [serialization] fix performance regression caused by too many buffer allocations on string serialization URL: https://github.com/apache/flink/pull/10529#issuecomment-566135495 @shuttie , yes, I think the GC pressure is the prime suspect here. For example the brief blimp in the performance on the timeline around http://codespeed.dak8s.net:8000/timeline/?ben=serializerTuple&env=2 was caused by some memory related configuration changes (part of another investigation). I've revert those changes after a couple of runs, to not skew benchmark results for this regression. Once you have provided an update, please ping me or @rkhachatryan so we can re-trigger the benchmark request run :)
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