Bug#337089: linux-image-2.6.14-1-powerpc: add CONFIG_TCP_CONG_BIC=y

Bug#337089: linux-image-2.6.14-1-powerpc: add CONFIG_TCP_CONG_BIC=y

[Horms]

On Wed, Nov 02, 2005 at 05:24:50PM +0100, Benoît Dejean wrote:
> Package: linux-image-2.6.14-1-powerpc
> Version: 2.6.14-1
> Severity: normal
> 
> Hi,
> Linux < 2.6.14 used to have every TCP congestion algorithms as builtins but
> NewReno + BIC was default.
> 
> Linux 2.6.14 has splitted these features into modules. But default remains
> NewReno + BIC accordint to CONFIG_TCP_CONG_ADVANCED help message :
> 
> "Nearly all users can safely say no here, and a safe default selection will
> be made (BIC-TCP with new Reno as a fallback)."
> 
> And indeed NewReno+BIC is a good and safe default. Much better than NewReno
> 
> But Debian .config has CONFIG_TCP_CONG_BIC=m (CONFIG_TCP_CONG_*=m) which
> makes NewReno default. So this is like a "regression". I'd like debian kernel
> to have CONFIG_TCP_CONG_BIC=y provided that one can easily switch to another
> algorithm (using /proc/sys/net/ipv4/tcp_congestion_control).

Hi Netdev,

could someone please comment on what a good default congestion
algorithm setup for distribution kernels is?

Thanks

-- 
Horms

Bug#337089: linux-image-2.6.14-1-powerpc: add CONFIG_TCP_CONG_BIC=y

[Ian McDonald]

> > But Debian .config has CONFIG_TCP_CONG_BIC=m (CONFIG_TCP_CONG_*=m) which
> > makes NewReno default. So this is like a "regression". I'd like debian kernel
> > to have CONFIG_TCP_CONG_BIC=y provided that one can easily switch to another
> > algorithm (using /proc/sys/net/ipv4/tcp_congestion_control).
>
> could someone please comment on what a good default congestion
> algorithm setup for distribution kernels is?
>
If you want BIC as default then do as suggested here. My personal
opinion is that is the correct thing to do for a standard
distribution.

If it is an experimental distribution then turn on tcp advanced
congestion control and build the rest (except for BIC) as modules.

Ian
--
Ian McDonald
http://wand.net.nz/~iam4
WAND Network Research Group
University of Waikato
New Zealand

Bug#337089: linux-image-2.6.14-1-powerpc: add CONFIG_TCP_CONG_BIC=y

[Horms]

On Sat, Nov 05, 2005 at 07:24:41AM +1300, Ian McDonald wrote:
> > > But Debian .config has CONFIG_TCP_CONG_BIC=m (CONFIG_TCP_CONG_*=m) which
> > > makes NewReno default. So this is like a "regression". I'd like debian kernel
> > > to have CONFIG_TCP_CONG_BIC=y provided that one can easily switch to another
> > > algorithm (using /proc/sys/net/ipv4/tcp_congestion_control).
> >
> > could someone please comment on what a good default congestion
> > algorithm setup for distribution kernels is?
> >
> If you want BIC as default then do as suggested here. My personal
> opinion is that is the correct thing to do for a standard
> distribution.

Thanks, the suggestion above will be incporated into the next release.

-- 
Horms