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  1. WiredTiger
  2. WT-3461

Avoid long sleeps when the system clock is adjusted

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Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.4.10, 3.5.11, WT3.0.0
    • None
    • Storage 2017-07-31, Storage 2017-08-21
    • v3.4

    Description

      When calculating a timeout for pthread_cond_timedwait, we start with an absolute time and add the maximum time to wait. If the system clock is adjusted (which happens frequently on Azure), we use the largest clock value we have ever seen in this calculation. That means we can sleep by longer than expected, up to the amount that the clock is adjusted.

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          is depended on by

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-31215 Enable pthread cond monotonic on Linux for WiredTiger

          • Major - P3 - Major loss of function.
          • Closed
          related to

          Improvement - An improvement or enhancement to an existing feature or task. WT-3459 Test WiredTiger with clock shifting

          • Major - P3 - Major loss of function.
          • Closed

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            People

              michael.cahill@mongodb.com Michael Cahill
              michael.cahill@mongodb.com Michael Cahill
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              Dates

                Created:
                Updated:
                Resolved: