[Bloat] "BBR" TCP patches submitted to linux kernel

[Eric Dumazet]

On Fri, 2016-10-21 at 10:47 +0200, Steinar H. Gunderson wrote:
> On Fri, Sep 16, 2016 at 02:04:37PM -0700, Dave Taht wrote:
> > I'm really looking forward to trying them out and reading the upcoming paper.
> > 
> > https://patchwork.ozlabs.org/patch/671069/
> 
> As a random data point, I tried a single flow from my main server in .no
> to my backup server in .nl and compared CUBIC (with sch_fq) to BBR (naturally
> also in sch_fq) on the sender side. The results were quite consistent across
> runs:
> 
>  - BBR ramped up much quicker than CUBIC.
>  - BBR gave ~10% higher max speed than CUBIC (~680 Mbit/sec on a gigabit link).
>  - CUBIC wavered a bit up and down (~100 Mbit/sec) from the max; BBR stayed
>    put (perhaps 2 Mbit/sec difference) the entire time.
> 
> http://pastebin.com/0XQaJvD9 for a typical log. I don't have any fancy
> graphs, sorry :-)
> 
> /* Steinar */

Hi Steinar

Could you provide /proc/sys/net/ipv4/tcp_rmem
and /proc/sys/net/ipv4/tcp_wmem values on your server ?

What is the rtt between your two hosts ?

Thanks