Troubleshooting
Problem
A smaller number of indexing batches than configured leads to a noticeable degradation in the overall indexing throughput rate.
Symptom
Content Platform Engine (CPE) systems are configured with a specific number of indexing worker threads, which are used, along with the number of Content Engine indexing instances, to calculate the number of concurrent batches allowed per Content Search Service (CSS) server.
For example, if a system is configured with 12 indexing threads (Total Configured concurrent batches) and has 2 CE instances with dispatching enabled (CE instances configured for indexing) then 6 concurrent batches allowed would be calculated per CSS server. However, if the Total CE instances configured for indexing are too high a smaller number of concurrent batches allowed will be calculated. This scenario can be checked by reviewing the Concurrent indexing batch Semaphore for Text Search Server summary log message in the p8_server_trace log, for example:
2020-03-26T01:35:37.913 BA02B6CF CBR FNRCE0000D - DEBUG Concurrent indexing batch Semaphore for Text Search Server: css1 created with concurrent batches allowed: 2 Total Configured concurrent batches: 12 Total CE instances configured for indexing: 5
In the above example, the system actually had two CE instances configured for indexing, but 5 are (inaccurately) reported causing the concurrent batches allowed to be smaller (2) than the expected 6. This incorrect CE count can occur when the number of Virtual Servers is greater than the actual number of CE server instances (with dispatching enabled) on the system.
Document Location
Worldwide
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Document Information
Modified date:
28 April 2025
UID
ibm16151797