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High latency and CPU Usage
Hi
We have 10 ESXi hosts with different ESXi Version (6 and 6.5) and HBA addapters and 4 storages connected via FC to each host
Once a week we have a problem:
Storage latency starts to grow from normal 20-30ms to 1500 and more.
After 5-10 minutes we get 100% CPU peak load (see screenshot)
Esxtop shows GAVG and DAVG 1500 and more, but QUED - 0.
After shutdown VM who generate a lot of IO traffic all problems disappear instantly.
We get this problem on different ESXI versions (6 and 6.5), different HBA (Emulex LPe12000 and ISP2532), different storages (HP and Hitachi) and different VM must shutdown to resolve problem.
What else is worth paying attention to in order to diagnose the problem?
Thanks