Difference between revisions of "Information Systems:Bart Hardware Issues History"
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==System slowdown - CPU firmware== |
==System slowdown - CPU firmware== |
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===Description of problem=== |
===Description of problem=== |
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Revision as of 13:44, 9 December 2015
Power8
System slowdown - CPU firmware
Description of problem
Occurrence: August 2015, Decemeber 2015
The Power8 has had two instances of severe system slowdown that affected everything from green-screen menu interaction, overnight backup and processing, and network latency. With network issues being the primary symptom, the entire network configuration in the server room and on the IBM i was examined and ruled out. This led to a network card replacement on September 11, 2015, which fixed the issue. The problem manifested itself again on December 2, 2015, and thus a recurrence pattern of about 2 months was determined. During the 2nd PMR, it was determined that the cause of the issue was buggy CPU firmware that caused improper allocation of CPU resources to the LPAR.
Solution
A temporary fix was implemented by creating another LPAR and running it http://www-01.ibm.com/support/docview.wss?uid=nas8N1020863. This running partition keeps the CPU allocation in check.