Knowing the total amount of VMware host memory usage is critical to understanding how well virtual server environments are performing. The VMware host memory usage status reports on memory usage and utilization on the VMware ESX host.
Definition
VMware host memory is measured as a percentage total physical machine memory available on the host. Memory usage on the VMware host is calculated as follows:
- VMware Host Memory Usage = total consumed memory / total physical machine memory
Use this calculation to begin troubleshooting performance issues in Oracle VMware, SQL Server VMware, and other database environments utilizing VMware.
Solutions
High host memory usage doesn't automatically mean that there is a problem. It can, however, indicate host memory over-commitment (or looming over-commitment) in Oracle VMware and SQL Server VMware environments. A clear indication of memory over-commitment is a high rate of memory swapping. Check the memory swap rates to determine if you have a problem.
Confio IgniteVM
Confio IgniteVM helps identify the impact of host memory usage for sites running Oracle on VMware and SQL Server on VMware. IgniteVM helps DBAs maintain performance and availability on virtual servers. IgniteVM is the only virtualization-aware database monitoring solution.
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