nfs:nfs3_max_transfer_size_cots Parameter

Description

Controls the maximum size of the data portion of an NFS version 3 READ, WRITE, READDIR, or READDIRPLUS request over TCP. This parameter controls both the maximum size of the request that the NFS server returns as well as the maximum size of the request that the NFS client generates.

Data Type

Unsigned integer (32-bit)

Default

1,048,576 bytes (1MB)

Range

0 to 2³² - 1

Units

Bytes

Dynamic?

Yes, but this parameter is set per file system at mount time. To affect a particular file system, unmount and mount the file system after changing this parameter.

Validation

None. However, setting the maximum transfer size on the NFS server to 0 is likely to cause NFS clients to malfunction or just decide not to attempt to talk to the server.

When to Change

Do not change this parameter unless transfer sizes larger than 1 MB are preferred.

Commitment Level

Unstable