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Co-authored-by: Charlie Gracie <charlie.gracie@microsoft.com>
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Improve performance by re-using ByteByffer array
During String deserialization the ByteBuffer array() can be resused
instead of creating a new byte[] and reading the data from the
ByteBuffer. If the ByteBuffer is not backed by an array creating
a new byte[] and reading the data is still required.
Performance measurement results:
Machine configuration:
4 core (8 threads) Intel(R) Xeon(R) W-2123 CPU @ 3.60GHz
32GB of RAM
Linux x86-64, kernel: 5.0.0-37-generic
Benchmark configuration:
TPC-H (optimal index)
20 clients
180s runtime
Results (QPS higher is better, response time lower is better)
Base with (trimming-results-refactor):
Time Passed: 180.013s, Query Executed: 617034, QPS: 3427.7191091754485, Avg Response Time: 5.82426738234846ms
Improved (this branch):
Time Passed: 180.012s, Query Executed: 633469, QPS: 3519.0376197142414, Avg Response Time: 5.674053505380689ms
Co-authored-by: @grcevski @charliegracie @macarte @adityamandaleeka