29Jul/100
ethtool: offloading
Enable stateless offloads to improve system performance.
Stateless offloads, such as checksum offload, segmentation offload, and large receive offload, can improve system performance by moving some of the processor-intensive tasks that do not require a connection to the network adapter.
The following offloads can help boost performance when they are enabled. The corresponding identifier is used by the ethtool:
| rx-checksumming | rx |
| tx-checksumming | tx |
| scatter-gather | sg |
| tcp segmentation offload | tso |
| generic-receive-offload | gro |
Show offload settings for eth0
ethtool -k eth0
Offload parameters for eth0:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp segmentation offload: on
udp fragmentation offload: off
generic segmentation offload: on
generic-receive-offload: off
To enable an offload, issue the following command:
# ethtool -K eth0on
To enable all offloads use
OPT="rx tx sg tso ufo gso gro"; for i in $OPT; do ethtool -K eth0 $i on; done