Sun Storage 7000 Unified Storage System: How to increase the TCP buffer size to improve NFS performance in fast 10Gb Ethernet or IPoIB networks (Doc ID 1401076.1)

Last updated on NOVEMBER 23, 2016

Applies to:

Sun Storage 7310 Unified Storage System - Version All Versions and later
Sun ZFS Storage 7120 - Version All Versions and later
Sun ZFS Storage 7320 - Version All Versions and later
Sun ZFS Storage 7420 - Version All Versions and later
Sun Storage 7410 Unified Storage System - Version All Versions and later
7000 Appliance OS (Fishworks)
NAS head revision : [not dependent]
BIOS revision : [not dependent]
ILOM revision : [not dependent]
JBODs Model : [not dependent]
CLUSTER related : [not dependent]

Goal

This document will show that the TCP buffer size can be increased for the Sun Storage 7000 Unified Storage System.  This is useful where packet drops and TCP transmission problems are contributing factors in performance degradation on fast networks such as 10Gb Ethernet or IPoIB.

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If, when using a fast network technology such as 10 Gigabit Ethernet or IPoIB (IP over Infiniband), it is found that NFS performance suffers with dropped packets and TCP transmission problems, then this may be due to the TCP buffer size on the appliance being set at too small a default value to cope with these fast technologies.

 

Solution

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