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  1. WiredTiger
  2. WT-4694

Dynamic compression throughput varies widely

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    Details

    • Story Points:
      8
    • Sprint:
      Storage Engines 2019-05-06, Storage Engines 2019-05-20, Storage Engines 2019-06-03, Storage Engines 2019-06-17, Storage Engines 2019-07-01
    • Backport Requested:
      v4.2

      Description

      While it shows large improvement, the long-running (2 hour) large-data Jenkins test for read-only is showing wildly varying throughput. The throughput numbers used to be very stable and are now swinging by 200% since the merge of WT-4433 for dynamic compression.

      This is only on the read-only test. The earlier, also long-running, tests for populate and read/update mixes do not show this variation. The plot is here: http://build.wiredtiger.com:8080/job/wiredtiger-perf-long/plot/

      I have attached the current version of the plot that illustrates this problem in case the link ages out of the pre-merge information.

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        5. latency.png
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        8. other.png
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        9. reads.png
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              Assignee:
              alex.cameron Alex Cameron (Inactive)
              Reporter:
              sue.loverso Susan LoVerso
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                Created:
                Updated:
                Resolved: