Expert Advice

Linux_NFS_Buffer_High  
Situation Description
Possible Causes
Suggested Actions
Situation Description

The number of RPC retransmits are high with no duplicate acknowledgements.

 

Possible Causes
  1. Sudden increase in network traffic due to increased RPC application activity.(NFS).
  2. Application configuration changes.

 

Suggested Actions

Check for any NFS configuration changes that might affect performance and remediate. If there has been an increase NFS activity, check the NFS socket receive queue buffers. Consider increasing socket buffer sizes if the set is too small. Consider choosing more optimal NFS mount options to reduce network traffic. Consider using TCP as the transport for NFS if you are not already doing so.

 

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