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VMware Latency Spikes
A few weeks ago, one of our VM hosts started showing disk latency spikes every 5 minutes upwards of 800ms.
We updated the host with all the latest VMware patches, and now the spikes are happening every 30 minutes, and only spiking to 100ms of latency.
VMware swears it's a hardware issue and we need to look at our diagnostic information on the Unity. There is only 1 VM currently running on this specific host with the latency spikes. There are 50 other VM's on 2 other hosts that aren't showing spikes, and they are all using the same datastore on the same physical Unity server. This suggests to me that it isn't a hardware issue, but I have certainly been wrong before.
Has anyone else ever seen anything like this? If so, any input is appreciated.
DELL-Josh Cr
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August 11th, 2022 14:00
Hi,
Thanks for your question about Unity latency. I would make sure that it is configured with best practices https://dell.to/3PjrYUf and that there are not any alerts on the array. If you are still having issues you may want to to collect performance data and contact phone support. https://dell.to/3zSlp5i
Let us know if you have any additional questions.