z/OS Network File System Guide and Reference
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Dynamicsizeadj

z/OS Network File System Guide and Reference
SC23-6883-00

The dynamicsizeadj parameter specifies the capability to have the packet size adjusted automatically when the remote procedure call (RPC) timeout has occurred.

For example, consider the situation where the negotiated size of the read buffer for an NFSv3 mount is 32K. If the RPC READ with a 32 K bytes request times out:
  • The RPC request times out.
  • The client cuts the size in half and sends the RPC READ with a 16 K request.
  • The RPC request times out again.
  • The client cuts the size in half and sends the RPC READ with a 8 K request.
Note: This process continues until the minimum size is reached.
Parent topic: Tuning the z/OS NFS client

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