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  1. Core Server
  2. SERVER-18562

YCSB load phase (insert only) push 16 core machine to 100 % due to high resoultion timers

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Critical - P2
    • Resolution: Gone away
    • Affects Version/s: 3.1.3
    • Fix Version/s: None
    • Component/s: Internal Code
    • Labels:
    • Operating System:
      Windows
    • Sprint:
      Platform 6 07/17/15, Platform 7 08/10/15

      Description

      MongoDB shell version: 3.1.3-pre-

      Environment:

      • Single mongod with wiredtiger as storage engine
      • Windows 2012
      • WriedTiger default configuration
      • EC2 machine c3.4xlarge

      Workload:

      • Used YCSB load

      Issue -

      During insert only workload it's appear that high resolution counter which responsible to notify if operation take longer then X (100msec default) consume 60% of the CPU

      The impact is so big that it mask the different between SSD drive to spin disk on windows.

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                • Created:
                  Updated:
                  Resolved: