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FAQ-The 2nd CPU is not used

Publication Date:  2015-06-11 Views:  637 Downloads:  0
Issue Description

    A Huawei Techal RH 2288 H V2 which is running ESXi 5.5. By Default was deliverd with 1 CPU. Afterwards the customer added another CPU to the host. When he is monitoring on the host we see that the 2nd CPU is not used.

As you can see in the PUTTY picture  the 2nd CPU (4 to 7) are doing nothing.
When the customer manually added the cpu core to some virtual machine with the affinity and we can see that the cores on the 2nd CPU is working fine (in below picture) .  The affinity was  chosen  for core 6 and 7 to the test terminal server. As you can see, 6 and 7 are running now.



The root cause for this problem is : the memory DIMMS are  installed wrongly in the physical server. 

After the second CPU was added the customer must to change the DIMMs  position in physical server.

In below we have the correct position for one CPU also for two CPUs and 6 DIMMs – the customer ‘s configuration -