Poor NUMA balance and high %RDY after latest patches - ESXi 5.0 build 1117897

[jrmunday]

Has anyone else noticed a poor NUMA balance, and increase in CPU ready time since patching ESXi 5.0 hosts to build 1117897?

This issue was previously observed and fixed, but seems to me that it has come back again on the current build?
http://communities.vmware.com/thread/391284?start=0&tstart=0

[jhturver]

Have not tested myself, but out of interest what processor are you using? AMD or Intel? Processor model?

Many thanks

Justin

[jrmunday]

Hi Justin,

My host specs are as follows;

Dell PowerEdge R815

- Model : AMD Opteron(tm) Processor 6276

- Processor Speed : 2.3 GHz

- Processor Sockets : 4

- Processor Cores per Socket : 16

- Logical Processors : 64

- Memory : 256 GB

Dell PowerEdge R815

- Model : AMD Opteron(tm) Processor 6174

- Processor Speed : 2.2 GHz

- Processor Sockets : 4

- Processor Cores per Socket : 12

- Logical Processors : 48

- Memory : 256 GB

HP Proliant DL585 G6

- Model : Six-Core AMD Opteron(tm) Processor 8435

- Processor Speed : 2.6 GHz

- Processor Sockets : 4

- Processor Cores per Socket : 6

- Logical Processors : 24

- Memory : 128 GB

Cheers,

Jon

[jhturver]

Thanks Jon

We have Intel E5-26xx series procs, and are currently evaluating this patch release.

Have a case open with Vmware asking them to confirm whether this patch impacts performance on recent Intel procs because it disables Intel Flex Priority due to a known bug. Just wanted to confirm you were not running similar procs to us.

Cheers

Justin