Exacq exacqVision Virtual User Manual User Manual
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The VMS system writes large amounts of data to datastores attached to the host. Bad disk performance often shows up as high CPU
usage in your virtual machine, as the disks are not able to keep up. Disk latency is a good indicator of disk performance issues. Click
on the Advanced button and then Chart to open the Customize Performance Chart window. Under Chart Options, choose Disk. Then
choose the specific datastore object your exacqVision Virtual server is writing to. Under Counters, check Kernel Write Latency and
Physical Device Command Latency. Click Apply to view the statistics.
The Physical Device Command Latency should be less than 20ms, and the Kernel Command Latency should be less than 3ms. Higher
values indicate the datastore does not have the IOPS capacity to keep up with the load. Consider adding datastore capacity or
migrating virtual machines to a different datastore to lessen the load.