How to improve the performance of concurrent EMS SSL connections and re-connections.
Article ID: KB0092462
Updated On:
| Products | Versions |
|---|---|
| TIBCO Enterprise Message Service | - |
| Not Applicable | - |
Description
Description:
How to improve the performance of concurrent EMS SSL connections and re-connections.
Symptoms:
When many EMS SSL connections and reconnections happen concurrently, the EMS server may report the warning message: "Closing SSL connection from *** due to timeout.“. It may take a longer time to establish SSL connections and re-connections. How to improve the performance?
Cause:
EMS handles SSL connection handshakes synchronously within one network I/O thread. It is expected that some delay may happen when multiple SSL connections were created at the same time.
How to improve the performance of concurrent EMS SSL connections and re-connections.
Symptoms:
When many EMS SSL connections and reconnections happen concurrently, the EMS server may report the warning message: "Closing SSL connection from *** due to timeout.“. It may take a longer time to establish SSL connections and re-connections. How to improve the performance?
Cause:
EMS handles SSL connection handshakes synchronously within one network I/O thread. It is expected that some delay may happen when multiple SSL connections were created at the same time.
Issue/Introduction
How to improve the performance of concurrent EMS SSL connections and re-connections.
Resolution
Beginning with EMS 7.0, two new parameters were introduced that allow you to fine-tune performance on multi-core machines:
- To bind network I/O threads to specific processors, set the processor_ids parameter in the tibemsd.conf.- To bind a storage thread to a specific processor, set processor_id in the stores.conf file.
These parameters are supported on Linux, Solaris and Windows platforms.Since EMS 8.1.0, we introduced the network_thread_count server property which is supported on all platforms. The EMS server ignores this parameter if the processor_ids parameter is also specified. Check the EMS user guide for details regarding these new parameters.
When you configure multiple network I/O threads based on specific processors, it can improve the performance of concurrent SSL connections to the EMS server to a certain degree. You need to run through performance tests to select the best value for this parameter in your production environment.
Additional Information
EMS User guide
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