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Configuring the number of concurrent Curator threads

Concurrence defines how many curation threads should run at the same time (each one curating a different job). Curator performance is optimal when each processor on the machine has a curation thread. However, to allow other applications such as the SCP the processing time that they require, set the concurrency level to fewer than the number of processors.

On a single-processor system, the default concurrency level is set to 1. On a multi-processor system, the default concurrency level is set to the number of processors minus 1. For example, on a system with four processors, the default concurrency level is set to 3.

Note:

Note:

Hyperthreaded CPUs should not be counted as real cores; for example, in the G6 server series, the hyperthreading is an option.

To configure the number of concurrent Curator threads

  1. Find the service reference value for Curator.

  2. In CLUI, to check the concurrence on the machine running Curator, type

    SELECT concurrency FROM map_service WHERE service_ref = Curator’s_service_ref

  3. To change the default setting, type

    UPDATE map_service SET concurrency = number_of_curation_threads WHERE service_ref = Curator’s_service_ref

  4. Restart Curator.


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See also


Topic number: 9121

Applies to: IMPAX 6.5.1 Server Knowledge Base