[VMC on AWS] Host in Cluster showing inconsistent RAM allocation

Products

• VMware Cloud on AWS

Issue/Introduction

This article explains the troubleshooting steps for inconsistent RAM allocation on ESXi host on vCenter UI

 

Symptoms:

Memory values inconsistent in vCenter Summary tab for the host. 



 

Log sinppets from /var/log/boot.log of affected ESXi host :

TSC: 1466248 cpu0:1)MemNode: 1201: 3 memory nodes created

TSC: 1479820 cpu0:1)MemMap: 3036: nodes=3

ESC[7mTSC: 51080240 cpu0:1)WARNING: NUMA: 2158: A significant memory (DRAM) imbalance (more than 30 percent) was detected between NUMA nodes 0(261999 MB) and 1(131072 MB). This may impact performanceESC[0m

TSC: 1045608328 cpu0:1)XMap: 703: Available range: 0x452084000 - 0x452880000 (966 pages)

TSC: 1045619384 cpu0:1)XMap: 719: XMap ready.

Cause

This issue occurs due to hardware issue at AWS end.

 

Resolution

Engage VMware Support for validation on the hardware from backend.  

Additional Information

Impact/Risks:

Users will see the incorrect RAM allocation values on ESXi host from vCenter UI