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  1. Core Server
  2. SERVER-11205

When NUMA machine detected: add "disable zone reclaim" to startup warnings

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Trivial - P5
    • Resolution: Duplicate
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Admin
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      Description

       "Tue Oct 15 18:14:04 [initandlisten] ",
       "Tue Oct 15 18:14:04 [initandlisten] ** WARNING: You are running on a NUMA machine.",
       "Tue Oct 15 18:14:04 [initandlisten] **          We suggest launching mongod like this to avoid performance problems:",
       "Tue Oct 15 18:14:04 [initandlisten] **              numactl --interleave=all mongod [other options]",
       "Tue Oct 15 18:14:04 [initandlisten] "

      Should add in:

      Then, disable zone reclaim in the proc settings using the following command:
       
      echo 0 > /proc/sys/vm/zone_reclaim_mode

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              Assignee:
              redbeard0531 Mathias Stearn
              Reporter:
              jason.zucchetto Jason Zucchetto
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