Difference between revisions of "Information Systems:Bart Hardware Issues History"

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[[Category: I.T. History]]
  
[[Category: I.T. History]]
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[[Category: Power8]]

Revision as of 21:16, 22 June 2016

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.

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