5. The ib-bonding driver
6. Bug Fixes and Enhancements Since OFED 1.3
7. Bug Fixes and Enhancements Since OFED 1.3.1
+8. Performance tuning
===============================================================================
1. Overview
- Bonding: Avoid annoying messages from initscripts when starting bond
- Bonding: Set default number of grat. ARP after failover to three (was one)
+===============================================================================
+8. Performance tuning
+===============================================================================
+- In IPoIB connected mode, the throughput of medium and large messages can be
+ increased by setting the following TCP parameters as follows:
+
+ /sbin/sysctl -w net.ipv4.tcp_timestamps=0
+ /sbin/sysctl -w net.ipv4.tcp_sack=0
+ /sbin/sysctl -w net.core.netdev_max_backlog=250000
+ /sbin/sysctl -w net.core.rmem_max=16777216
+ /sbin/sysctl -w net.core.wmem_max=16777216
+ /sbin/sysctl -w net.core.rmem_default=16777216
+ /sbin/sysctl -w net.core.wmem_default=16777216
+ /sbin/sysctl -w net.core.optmem_max=16777216
+ /sbin/sysctl -w net.ipv4.tcp_mem="16777216 16777216 16777216"
+ /sbin/sysctl -w net.ipv4.tcp_rmem="4096 87380 16777216"
+ /sbin/sysctl -w net.ipv4.tcp_wmem="4096 65536 16777216"
+