netdev - Re: [PATCH v3 net-next 16/16] tcp_bbr: add BBR congestion control

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Message-ID: <9d2f75e6-0161-aa25-e362-ad7267ee2251@hpe.com>
Date:   Mon, 19 Sep 2016 14:17:31 -0700
From:   Rick Jones <rick.jones2@....com>
To:     Eric Dumazet <edumazet@...gle.com>,
        Stephen Hemminger <stephen@...workplumber.org>
Cc:     Neal Cardwell <ncardwell@...gle.com>,
        David Miller <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>, Van Jacobson <vanj@...gle.com>,
        Yuchung Cheng <ycheng@...gle.com>,
        Nandita Dukkipati <nanditad@...gle.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH v3 net-next 16/16] tcp_bbr: add BBR congestion control

On 09/19/2016 02:10 PM, Eric Dumazet wrote:
> On Mon, Sep 19, 2016 at 1:57 PM, Stephen Hemminger
> <stephen@...workplumber.org> wrote:
>
>> Looks good, but could I suggest a simple optimization.
>> All these parameters are immutable in the version of BBR you are submitting.
>> Why not make the values const? And eliminate the always true long-term bw estimate
>> variable?
>>
>
> We could do that.
>
> We used to have variables (aka module params) while BBR was cooking in
> our kernels ;)

Are there better than epsilon odds of someone perhaps wanting to poke 
those values as it gets exposure beyond Google?

happy benchmarking,

rick jones