enable advanced congestion control

[poelzi]

Please enable the modules in Networking->Networking Options->enable advanced congestion control, as well as the modules there.

Why ?
Because ubuntu only ships with bic as a tcp cognestion control, which is in my option a very bad one. Bic is very sensitive to packet loss and jitter which occure in wirless networks. Here in our open mesh network, bic has half the throughput then westwood has. On short breakdowns, westwood recovers much faster to the max throughput then bic does. On other network setups, other controls may be better. Enableing the modules allows users to choose the best they need.

[matth (horner-matt)]

I second this, for I too receive better throughput over wifi with Westwood+Veno over CUBIC.

[Leann Ogasawara (leannogasawara)]

Just adding a note about the specific kernel config options being requested here:

CONFIG_TCP_CONG_ADVANCED

CONFIG_TCP_CONG_BIC
CONFIG_TCP_CONG_CUBIC (looks like this one is already enabled)
CONFIG_TCP_CONG_WESTWOOD
CONFIG_TCP_CONG_HTCP
CONFIG_TCP_CONG_HSTCP
CONFIG_TCP_CONG_HYBLA
CONFIG_TCP_CONG_VEGAS
CONFIG_TCP_CONG_SCALABLE
CONFIG_TCP_CONG_LP
CONFIG_TCP_CONG_VENO
CONFIG_TCP_CONG_YEAH
CONFIG_TCP_CONG_ILLINOIS

I'm reassigning this to the kernel team for their consideration. Thanks.

[Tim Gardner (timg-tpi)]

Ubuntu-2.6.24-4.6