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  1. Core Server
  2. SERVER-21538

Choose clock source for reading current time dynamically at startup

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    • Fully Compatible
    • v3.4
    • Repl 2017-03-06, Repl 2017-03-27
    • 62

    Description

      On different hardware and under different virtualization environments, the latency of reading the system clock can fluctuate by over 1000x. When the clock may be read with extremely low latency, we would like to leverage it to provide very precise current time inside the server. When the system clock is of higher latency, we would like to emulate a low-resolution clock that can be read very quickly, so that time calls on such systems do not interfere with the execution of actual user operations.

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          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-2114 Don't use select timeouts for fast coarse timing

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-18922 Choose time source for measuring short durations dynamically at startup

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

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-1279 Get more accurate elapsed time in the Listerner

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

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            People

              mathias@mongodb.com Mathias Stearn
              schwerin@mongodb.com Andy Schwerin
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