Disk-based queuing and VM/DISKQ_PERCENT environment variable

These cases can trigger disk-based queuing:

  • Disk-based Queuing for the process is selected and the total RAM that is required for the queues exceeds the configured threshold. The message count in queue is more than or equal to the default minimum message count.
  • The used virtual memory percent exceeds the threshold. The message count in queue is more than or equal to the default minimum message count.

You can tune the trigger condition by setting the environment variables DISKQ_PERCENT and DISKQ_MINMSGS before starting a process.

  • DISKQ_PERCENT: The default DiskQue Virtual Memory percent is 75. (75%).
  • DISKQ_MINMSGS: The default DiskQue Minimum # of Messages/que is 50.