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  1. ActiveMQ
  2. AMQ-6377

Introduce a periodic disk sync mode for KahaDB journal

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Details

    • New Feature
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 5.13.4
    • 5.14.0
    • Broker, KahaDB
    • None

    Description

      KahaDB has two modes for journal disk syncs, either always sync for each write or never sync. I'm proposing that we add a third option, a period disk sync.

      The intended behavior of this would be to run a task in the file appender that would sync the file (if necessary) at some periodic interval (such as every 500 ms, or 1 second, etc) instead of every write. The file would also be synced on close (on file rollover or shutdown)

      In my testing, syncing every 1 second has been proven to be nearly indistinguishable performance as never disk syncing but is a safer option as you insure that a sync is performed at least once per interval.

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              cshannon Christopher L. Shannon
              cshannon Christopher L. Shannon
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