Systems and methods for selecting virtual machines to be migrated

A method comprising:

• determining, for each virtual machine of a plurality of virtual machines on a host, a central processing unit (CPU) usage of a plurality of CPU usages;
• determining that a sum of the plurality of CPU usages exceeds a first threshold usage;
• flagging, from the plurality of virtual machines, outlier virtual machines having a CPU usage exceeding a second threshold usage;
• assigning a weight to each of the outlier virtual machines based on a CPU usage-related metric, wherein each CPU usage comprises a plurality of CPU usage samples, wherein the plurality of CPU usage samples includes a plurality of CPU usage samples exceeding the second threshold usage, and wherein the weight is proportional to the plurality of CPU usage samples exceeding the second threshold usage;
• selecting for migration, from the outlier virtual machines, candidate virtual machines based on assigned weights until a sum of second CPU usages is less than a third threshold usage, wherein the second CPU usages include each CPU usage of a virtual machine not selected for migration;
• and
• migrating the candidate virtual machines.

A non-transitory computer readable media storing computer readable instructions to cause a computer to perform a process comprising:

• determining, for each virtual machine of a plurality of virtual machines on a host, a central processing unit (CPU) usage of a plurality of CPU usages;
• determining that a sum of the plurality of CPU usages exceeds a first threshold usage;
• flagging, from the plurality of virtual machines, outlier virtual machines having a CPU usage exceeding a second threshold usage;
• assigning a weight to each of the outlier virtual machines based on a CPU usage-related metric, wherein each CPU usage comprises a plurality of CPU usage samples, wherein the plurality of CPU usage samples includes a plurality of CPU usage samples exceeding the second threshold usage, and wherein the weight is proportional to the plurality of CPU usage samples exceeding the second threshold usage;
• selecting for migration, from the outlier virtual machines, candidate virtual machines based on the assigned weights until a sum of second CPU usages is less than a third threshold usage, wherein the second CPU usages include each CPU usage of a virtual machine not selected for migration;
• and
• migrating the candidate virtual machines.