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TIBCO iProcess® Engine 11.9.1

# RPC_SVR_NUM_THREADS

WIS and WQS Process Configuration

## Summary

This attribute defines the maximum number of threads that the `WIS` and `WQS` processes can use to process RPC requests from client applications.

## Applies To

This attribute should be set for ALL processes.

## Permissible Values

This attribute must be an integer in the range 1 to 100 (but see the Notes ).

## Default Value

The attribute is assigned the following default value when the iProcess Engine node is installed.

Machine ID | Process | Instance | Value
0 | ALL | 0 | 5

## Notes

To process RPC requests, both the `WIS` and `WQS` processes access a pool of “worker” threads that is provided by a multi-threaded RPC server shared library (SWRPCMTS). This attribute defines the number of threads that are available in the SWRPCMTS library to process RPC requests.

Warning: The maximum `RPC_SVR_NUM_THREADS` value is also limited by the value of the WQS_NUM_SEARCH_SLOTS process attribute.

If you want to increase the `RPC_SVR_NUM_THREADS` value beyond the `WQS_NUM_SEARCH_SLOTS` value, you must stop iProcess Engine, change the `RPC_SVR_NUM_THREADS` value and then restart iProcess Engine.

If you try to increase `RPC_SVR_NUM_THREADS` beyond `WQS_NUM_SEARCH_SLOTS` without stopping the iProcess Engine, the `RPC_SVR_NUM_THREADS` value will instead be set to the `WQS_NUM_SEARCH_SLOTS` value.

You can adjust the value of this process attribute to optimize the `WQS` and `WIS` process’ response times when processing RPC requests against available CPU capacity. Increasing the number of threads will improve the throughput of client RPC requests, but at the cost of increased CPU usage.

## See Also

WIS_FILTER_THREAD_BOUNDARIES, WIS_FILTER_THREAD_POOL_SIZE, WQS_NUM_SEARCH_SLOTS

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