netdev - Re: [PATCH net-next 0/6] tcp: remove non GSO code

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Date:   Tue, 20 Feb 2018 20:35:14 +0100
From:   Oleksandr Natalenko <oleksandr@...alenko.name>
To:     Eric Dumazet <eric.dumazet@...il.com>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Neal Cardwell <ncardwell@...gle.com>,
        Yuchung Cheng <ycheng@...gle.com>,
        Soheil Hassas Yeganeh <soheil@...gle.com>
Subject: Re: [PATCH net-next 0/6] tcp: remove non GSO code

Hi.

On úterý 20. února 2018 19:57:42 CET Eric Dumazet wrote:
> Actually timer drifts are not horrible (at least on my lab hosts)
> 
> But BBR has a pessimistic way to sense the burst size, as it is tied to
> TSO/GSO being there.
> 
> Following patch helps a lot.

Not really, at least if applied to v4.15.4. Still getting 2 Gbps less between 
VMs if using BBR instead of Reno.

Am I doing something wrong?

Oleksandr