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NetApp Knowledge Base

Slow FabricPool on StorageGRID VMs with io wait due to Pointer Block Cache

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63
Visibility:
Public
Votes:
0
Category:
storagegrid
Specialty:
sgrid
Last Updated:

Applies to

  • StorageGRID 11.x
  • Virtualized StorageGRID storage nodes
  • ONTAP 9
  • FabricPool

Issue

  • ONTAP 9 has slowness in FabricPool response times
  • StorageGRID is configured to use virtual appliances on VMWare ESXI
  • There are high i/o waits in the StorageGRID dashboard with 100% CPU on one node of StorageGRID
  • No ONTAP, backend, or network latency or errors are seen
  • Example: From the StorageGRID Support Node Grafana dashboard, high CPU and i/o wait are seen

cpuiowaitSG.PNG

 

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