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  1. WiredTiger
  2. WT-4694

Dynamic compression throughput varies widely

    • 8
    • 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
    • v4.2

      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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        2. other.png
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        3. ok1.png
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        4. ok0.png
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        5. latency.png
          latency.png
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        6. best1.png
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        7. best0.png
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        8. 8k1.png
          8k1.png
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        9. 8k0.png
          8k0.png
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            Assignee:
            alex.cameron@mongodb.com Alex Cameron (Inactive)
            Reporter:
            sue.loverso@mongodb.com Susan LoVerso
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              Created:
              Updated:
              Resolved: