![]() To determine CPU contention from %RDY you have to take into account %RDY, %MLMTD and the number of vCPUS. This may happen even when there is plenty of free CPU cycles when a VM CPU is administratively limited which is shown by %MLMTD. The percentage of time the world was ready to run but waiting in a queue to be scheduled. The %VMWAIT metric is only available for vCPUS or combined in a VM group.įor vCPUS when a Virtual Machine is expandede with the "e" command, %WAIT = %VMWAIT + %IDLE + %SWPWT The total percentage of time a world spent in a blocked state waiting for events. It's nothing wrong when there is a high value because the idle time is included in %WAIT. The theoretical maximum of %WAIT is (NWLD*100). Percentage of time a world spent in the blocked or busy wait state. Percentage of time spent by the ESXi VMkernel on behalf of the world to process interrupts and to perform other system activities. ![]() The main difference between %RUN and %USED is that %RUN does not account system time. On a hyperthreading enabled server, %RUN can be twice as large as %USED. %RUN does not account hyperthreading and system time. Percentage of total scheduled time for the world to run. Groups can also be higher than 100% when more vCPUs are configured or there is a high %SYS usage. %USED depends on the frequency the CPU core is running with and can be higher or lower compared to %RUN when the nominal (rated) frequency differs. Percentage of physical CPU core cycles used by the world or group. NWLD is 1 when either the Group as a single process, or when the group has been expanded with the "e" command. When the group is expanded with the "e" command the name of the World is displayed. The number appended to the name is the LWID. The LWID typcally the first world that has been started in a group. The Leader World ID, also known as VMX Cartel ID for Virtual Machines. A group is sometimes also referred as Resource Pool which has nothing in common with the Resource Pools you can configure in a DRS Cluster. This also applies to groups with a single world. The world ID is typically cloaked and the group ID is displayed, unless the group is expanded with the "e" command. In vSphere 6.5, esxtop has 9 panes that can be enabled with the following shortcuts: The tool is available either on the ESXi host itself (#esxtop), or from remote systems like the vMA (#resxtop). It is probably the most useful utility to troubleshoot performance issues on an ESXi host. The esxtop utility provides a detailed look at how ESXi uses resources in real time.
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