Check the NFS TCP maximum transfer size
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For NFS, you can check whether the TCP maximum transfer size for reads and writes might be causing a performance issue. If you think the size is slowing performance, you can increase it.
What you'll need
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You must have cluster administrator privileges to perform this task.
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You must use advanced privilege level commands for this task.
Steps
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Change to the advanced privilege level:
set -privilege advanced
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Check the TCP maximum transfer size:
vserver nfs show -vserver vserver_name -instance
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If the TCP maximum transfer size is too small, increase the size:
vserver nfs modify -vserver vserver_name -tcp-max-xfer-size integer
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Return to the administrative privilege level:
set -privilege admin
Example
The following example changes the TCP maximum transfer size of SVM1
to 1048576:
cluster1::*> vserver nfs modify -vserver SVM1 -tcp-max-xfer-size 1048576