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From: David Miller <davem@davemloft.net>
To: priyarjha@google.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH net-next 0/2] tcp_bbr: Improving TCP BBR performance for WiFi and cellular networks
Date: Thu, 24 Jan 2019 22:27:43 -0800 (PST)	[thread overview]
Message-ID: <20190124.222743.64593079002945909.davem@davemloft.net> (raw)
In-Reply-To: <20190123200454.260121-1-priyarjha@google.com>

From: Priyaranjan Jha <priyarjha@google.com>
Date: Wed, 23 Jan 2019 12:04:52 -0800

> Ack aggregation is quite prevalent with wifi, cellular and cable modem
> link tchnologies, ACK decimation in middleboxes, and common offloading
> techniques such as TSO and GRO, at end hosts. Previously, BBR was often
> cwnd-limited in the presence of severe ACK aggregation, which resulted in
> low throughput due to insufficient data in flight.
> 
> To achieve good throughput for wifi and other paths with aggregation, this
> patch series implements an ACK aggregation estimator for BBR, which
> estimates the maximum recent degree of ACK aggregation and adapts cwnd
> based on it. The algorithm is further described by the following
> presentation:
> https://datatracker.ietf.org/meeting/101/materials/slides-101-iccrg-an-update-on-bbr-work-at-google-00
> 
> (1) A preparatory patch, which refactors bbr_target_cwnd for generic
>     inflight provisioning.
> 
> (2) Implements BBR ack aggregation estimator and adapts cwnd based
>     on measured degree of ACK aggregation.

Looks great.

Series applied, thanks!

      parent reply	other threads:[~2019-01-25  6:27 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-23 20:04 [PATCH net-next 0/2] tcp_bbr: Improving TCP BBR performance for WiFi and cellular networks Priyaranjan Jha
2019-01-23 20:04 ` [PATCH net-next 1/2] tcp_bbr: refactor bbr_target_cwnd() for general inflight provisioning Priyaranjan Jha
2019-01-23 20:04 ` [PATCH net-next 2/2] tcp_bbr: adapt cwnd based on ack aggregation estimation Priyaranjan Jha
2019-01-24 16:36 ` [PATCH net-next 0/2] tcp_bbr: Improving TCP BBR performance for WiFi and cellular networks Eric Dumazet
2019-01-25  6:27 ` David Miller [this message]

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