NFS export performance settings

You can specify settings to control the performance of NFS exports.

The following table describes the performance category of settings for NFS exports:

Setting
Description
Block Size
The block size used to calculate block counts for NFSv3 FSSTAT and NFSv4 GETATTR requests. The default value is 8192 bytes.
Commit Asynchronous
If set to yes, allows NFSv3 and NFSv4 COMMIT operations to be asynchronous. The default value is No.
Directory Transfer Size
The preferred directory read transfer size reported to NFSv3 and NFSv4 clients. The default value is 131072 bytes.
Read Transfer Max Size
The maximum read transfer size reported to NFSv3 and NFSv4 clients. The default value is 1048576 bytes.
Read Transfer Multiple
The recommended read transfer size multiple reported to NFSv3 and NFSv4 clients. The default value is 512 bytes.
Read Transfer Preferred Size
The preferred read transfer size reported to NFSv3 and NFSv4 clients. The default value is 131072 bytes.
Setattr Asynchronous
If set to Yes, performs set attribute operations asynchronously. The default value is No.
Write Datasync Action
The action to perform for DATASYNC writes. The default value is DATASYNC.
Write Datasync Reply
The reply to send for DATASYNC writes. The default value is DATASYNC.
Write Filesync Action
The action to perform for FILESYNC writes. The default value is FILESYNC.
Write Filesync Reply
The reply to send for FILESYNC writes. The default value is FILESYNC.
Write Transfer Max Size
The maximum write transfer size reported to NFSv3 and NFSv4 clients. The default value is 1048576 bytes.
Write Transfer Multiple
The recommended write transfer size reported to NFSv3 and NFSv4 clients. The default value is 512 bytes.
Write Transfer Preferred
The preferred write transfer size reported to NFSv3 and NFSv4 clients. The default value is 524288.
Write Unstable Action
The action to perform for UNSTABLE writes. The default value is UNSTABLE.
Write Unstable Reply
The reply to send for UNSTABLE writes. The default value is UNSTABLE.