netdev - Re: [PATCH net] tcp: restore autocorking

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Date:   Thu, 03 May 2018 13:55:46 +0000
From:   Eric Dumazet <edumazet@...gle.com>
To:     Tariq Toukan <tariqt@...lanox.com>
Cc:     David Miller <davem@...emloft.net>,
        Tal Gilboa <talgi@...lanox.com>,
        netdev <netdev@...r.kernel.org>,
        Michael Wenig <mwenig@...are.com>,
        Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [PATCH net] tcp: restore autocorking

On Thu, May 3, 2018 at 4:06 AM Tariq Toukan <tariqt@...lanox.com> wrote:



> On 03/05/2018 6:25 AM, Eric Dumazet wrote:
> > When adding rb-tree for TCP retransmit queue, we inadvertently broke
> > TCP autocorking.
> >
> > tcp_should_autocork() should really check if the rtx queue is not empty.
> >

> Hi Eric,

> We are glad to see that the issue that Tal investigated and reported [1]
> is now addressed.
> Thanks for doing that!

> Tal, let’s perf test to see the effect of this fix.

> Best,
> Tariq

> [1] https://patchwork.ozlabs.org/cover/822218/

Yes, but you never really gave any  insights of what exact tests you were
running :/

Sometimes the crystal ball is silent, sometimes it gives a hint :)