SPARC Legacy servers (MOSC)

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X4140 System Interrupts Issue

edited Feb 20, 2013 9:31AM in SPARC Legacy servers (MOSC) 2 commentsAnswered
  Problem Description:

We did encountered performance lag issues on our Sun Fire X4140 server. While analyzing processes we noticed that processor core 0 is having mostly 0 idle time and all interrupts are processed by it while other processor core aren't processing any interrupts and have 80 and above idle time. We checked all the other Sun servers and found that this aspect is common among all AMD processors while the Sun servers with Intel processor are dividing interrupts to all available processor cores. Same SMP Kernel is being used on all servers.

Detailed information of our server is as following

System Information:

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