Troubleshooting
Problem
On the RedHat Enterprise Linux 6.1 operating system, parallel jobs run with degradated performance.
Symptom
On RedHat Linux 6.1 system there is a 10 - 90% performance degradation depending on the hardware configuration and DataStage node configuration during parallel job runs. Increase in number of CPU cores and DataStage node counts used on the system leads to more performance degradation.
Cause
This is caused by Parallel jobs using transformer stages and use of the CurrentTimestampMS() function in the transformer stage on the Redhat Linux 6.1 system.
Diagnosing The Problem
Resolving The Problem
On the computer that has the Redhat Enterprise Linux 6.1 operating system installed, set the environment variable as follows: TZ=:/etc/localtime before running parallel jobs. The CPU time improves. |
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Document Information
Modified date:
16 June 2018
UID
swg21598208