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Appendix C Installing the Sun PCI-Express Dual Gigabit Ethernet Device Driver on Linux Platforms 81
1. Create a performance tuning script (for example, e1000_perf.sh), and edit this
file to add the interface or device ID of Sun PCI-Express Dual Gigabit Ethernet
Low-Profile adapter.
#!/bin/bash
echo "configuring network performance"
# set mmrbc to 4k reads, modify only Sun PCI-E Dual Gigabit device
IDs
# set the MTU (max transmission unit) - it requires your switch and
# clients to change too and should support the value you provide
here.
# Also set the txqueuelen on your SSun PCI-E Dual Gigabit adapter.
# If your adapter was configured as eth2, you would the following:
ifconfig eth2 mtu 16110 txqueuelen 1000 up
# call the sysctl utility to modify /proc/sys entries; update the
# location of the sysctl_e1000.conf file as appropriate
sysctl -p ./sysctl_e1000.conf