VMware host disk latency reports on the average amount of time to process a read or write command issued by the guest operating system to the virtual machine.
High VMware host disk latency values indicate that storage for Oracle VMware and SQL Server VMware database applications may be overloaded or slow. Such high values justify further investigation to ensure proper system performance.
VMware host disk latency issues result from:
- Disk Write Latency = Kernel Write Latency + Device Write Latency
- Disk Read Latency = Kernel Read Latency + Device Read Latency
Expected disk latencies are dependent on the nature of the storage workload (e.g. read/write mix, randomness, and I/O size) and the storage subsystems' capabilities.
For more information pertaining to VMware host disk latency issues see:
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