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Type: Improvement
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Resolution: Duplicate
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Priority: Major - P3
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None
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Affects Version/s: None
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Component/s: None
Since the merge of the dynamic compression change in WT-4433, all of the long tests have seen improvement. The long read-only test (test 4) shows almost 4x improvement in throughput sometimes.
However, the throughput is now wildly variable, up to 100%. It seems to have a low of about 42M operations and a high of 80M operations but run-to-run, it changes wildly between runs.
I have attached the plot. The old code was a solid straight line (the bump on the left were a few earlier runs of a dynamic compression change). We should investigate to see what is going well/poorly when the test varies by 100%.