Jumbo Frames are Ethernet Frames with more than 1,500 bytes of payload (MTU). Conventionally, jumbo frames can carry up to 9,000 bytes of payload, but variations exist and some care must be taken when using the term. Many, but not all, Gigabit Ethernet switches and Gigabit Ethernet network interface cards support jumbo frames, but all Fast Ethernet switches and Fast Ethernet network interface cards support only standard-sized frames. Jumbo frames can reduce server overhead such as a big decrease in CPU usage when transferring larger file. Also you should see some increase in network throughput.
Requirements:
1. Your NIC supports custom MTU.
2. Compatible Gigabit switch.
3. Kernel 2.6.17 and above.
For changing the MTU immediately,
ifconfig eth0 mtu 9000For changing the MTU permanently,
nano /etc/sysconfig/network-script/ifcfg-eth0
append, MTU 9000
After that do a
service network restart
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