This usually is not a problem, because balloon driver tends to smartly steal guest physical memory that cause little performance problems. Please turn JavaScript back on and reload this page. CPU load accounts the run time and ready time for all the groups on the host. Accessing remote memory causes increased latency. Compare IO latencies with corresponding data from the storage array.

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Each screen provides different expansion options.

This is the total ballooned memory by the VMs. Each queue has an associated latency, dictated by its size and whether the IO load is low or high, which affects the throughput and latency seen by applications inside VMs. The second point we need to understand is that esxtop uses worlds to show CPU usage.

This is the amount of MHz the world will receieve when virtual machines are competing for resources. The stats are related, but not the same. The amount of guest physical memory recently used by the VM, which is estimated by VMKernel statical sampling. It can indicate that the storage system is unable to meet the demands of the guest operating system. The first column is the interactive mode counter name; the second column is the batch mode counter category; the last column is the batch mode counter name.


The average amount of time it takes a device HBA, array, and everything in between to service a single request. Share Tweet Related posts:.

esxtop Performance Counters |VMware Communities

More info about this command line option can be found here. Esxtop batch mode output uses a csv comma separated values format. However, you can export the current list of worlds and import it again to limit the amount of VMs shown. The world id identifies the leader world of the VM group. Capturing esxtop results First things first. Note that esxtop only shows the pshare stats for VMs, excluding the pshare stats for user worlds.

To do the correlation, you need to be very familiar with the valloon layers in ESX Kernel, which is out of our scope. The LOAD counter values is the ratio of this value with respect to the queue depth.

Troubleshooting with ESXTOP

This might impact esxttop latency to the guest. GRANT accounts the guest physical memory, it may not be the same as the mapped machine memory, due to page sharing. There must be a certain threshold however. A world can be in different states, either scheduled to run, ready to run but not scheduled, or not ready to run waiting for some events.


Interpreting esxtop Statistics |VMware Communities

A world is a VMkernel schedulable entity, similar to a processes or thread in other operating systems. Because VMM worlds represent the guest behavior the best. This counter reports the amount of memory that the balloon driver is currently holding for bwlloon by other VMs.

Note that there are queues in different storage layers. The following is a lot simpler than what I came up with, thanks William!

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The amount of physical memory recently used read or write by the virtual machine. Please note that bakloon above inequations may not hold due to frequency scaling, which is discussed next. A value of 0 means no reservation. Due to ESX Page Sharing technology, guest physical pages with the same content can be mapped to the same machine page.

The ESX storage stack allows these ballono disks to be located on any of the multiple storage options available.