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Why may NFSv3 perform better than NFSv4.x?

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Votes:
2
Category:
ontap-9
Specialty:
nas
Last Updated:

Applies to

  • ONTAP 9
  • NFSv3 to 4.2

Answer

  • There are several reasons:
    • Locking is not required for NFSv3
      • Locking adds more overhead for NFS clients and servers
      • Locking also may require communication with other clients, adding further delays
    • Each call is a separate RPC call in NFSv3
      • This may be faster or slower depending on the workload
    • Features like delegations offload requirements to other clients
      • Other clients being required to handle delegations create extra delays
    • NFSv4 retains state which may not perform as efficiently
    • Older versions of Linux or ONTAP are not as optimized as newer versions for NFSv4.x optimal performance

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