zhijiang created FLINK-15962:
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Summary: Reduce the default chunk size in netty stack
Key: FLINK-15962
URL: https://issues.apache.org/jira/browse/FLINK-15962
Project: Flink
Issue Type: Improvement
Components: Runtime / Network
Reporter: zhijiang
The current default chunk size inside netty stack is 16MB, and one arena would
create multiple chunks based on demands. But it does not mean that the new
chunk is created after the previous one was fully exhausted, which would
further boost the direct memory overhead.
In order to decrease the total memory overhead caused by netty, we can reduce
the default chunk size and measure the effect via existing e2e, and also verify
the performance concern via the benchmarks.
This improvement is orthogonal to the
[FLINK-10742|https://issues.apache.org/jira/browse/FLINK-10742]
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