netdev - Re: [PATCH net-next 0/3] tcp: better deal with delayed TX completions

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Date:   Fri, 12 Mar 2021 11:04:29 -0800
From:   Yuchung Cheng <ycheng@...gle.com>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     Eric Dumazet <eric.dumazet@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Neal Cardwell <ncardwell@...gle.com>,
        Neil Spring <ntspring@...com>
Subject: Re: [PATCH net-next 0/3] tcp: better deal with delayed TX completions

On Fri, Mar 12, 2021 at 10:18 AM Jakub Kicinski <kuba@...nel.org> wrote:
>
> On Thu, 11 Mar 2021 12:35:03 -0800 Eric Dumazet wrote:
> > From: Eric Dumazet <edumazet@...gle.com>
> >
> > Jakub and Neil reported an increase of RTO timers whenever
> > TX completions are delayed a bit more (by increasing
> > NIC TX coalescing parameters)
> >
> > While problems have been there forever, second patch might
> > introduce some regressions so I prefer not backport
> > them to stable releases before things settle.
> >
> > Many thanks to FB team for their help and tests.
> >
> > Few packetdrill tests need to be changed to reflect
> > the improvements brought by this series.
>
> FWIW I run some workloads with this for a day and looks good:
>
> Tested-by: Jakub Kicinski <kuba@...nel.org>
Acked-by: Yuchung Cheng <ycheng@...gle.com>
Thank you Eric for fixing the bug.

>
> Thank you!