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IBM Engineering Lifecycle Query Engine performance is very poor for query and indexing on Windows servers

Troubleshooting


Problem

IBM Engineering Lifecycle Management applications that utilize Lifecycle Query Engine (LQE) and Link Indexing (LDX) activities, can be significantly impacted by poor performance of disk writes by the Microsoft Windows API, implementing the force() method from the JRE.

Symptom

You can experience one or more following symptoms when there is a need for the LQE/LDX system to make large writes to disk:
  • IBM Jazz Reporting Service (JRS) Report builder takes an inconsistent amount of time to complete, or times out and fails to return results.
  • Reports on Engineering Lifecycle Manager applications dashboards take an inconsistent amount of time to complete, or times out without completing the report.
  • In LQE and LDX running reindex or updating, the data source operation are significantly slower when using memory-mapped than direct mode option.
  • Loading links across applications and from Global Configurations in an ELM application can be slow.
  • LQE/LDX server can, but not necessary does not have to exhibit high CPU usage. There is no high memory or disk usage.

Document Location

Worldwide

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Document Information

Modified date:
26 April 2023

UID

ibm16450437

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