netdev - Re: [PATCH net-next 5/5] tcp: add tcp_rto_max

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Message-ID: <CADVnQynosa9kG3dg6vOsDYLaHWePv4OTUsAm5wGPn4O3rQbxaQ@mail.gmail.com>
Date: Sat, 8 Feb 2025 17:48:01 -0600
From: Neal Cardwell <ncardwell@...gle.com>
To: Jason Xing <kerneljasonxing@...il.com>
Cc: Eric Dumazet <edumazet@...gle.com>, "David S . Miller" <davem@...emloft.net>, 
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org, 
	Kuniyuki Iwashima <kuniyu@...zon.com>, Jason Xing <kernelxing@...cent.com>, 
	Simon Horman <horms@...nel.org>, eric.dumazet@...il.com
Subject: Re: [PATCH net-next 5/5] tcp: add tcp_rto_max_ms sysctl

On Fri, Feb 7, 2025 at 11:46 PM Jason Xing <kerneljasonxing@...il.com> wrote:
>
> On Fri, Feb 7, 2025 at 11:30 PM Eric Dumazet <edumazet@...gle.com> wrote:
> >
> > Previous patch added a TCP_RTO_MAX_MS socket option
> > to tune a TCP socket max RTO value.
> >
> > Many setups prefer to change a per netns sysctl.
> >
> > This patch adds /proc/sys/net/ipv4/tcp_rto_max_ms
> >
> > Its initial value is 120000 (120 seconds).
> >
> > Keep in mind that a decrease of tcp_rto_max_ms
> > means shorter overall timeouts, unless tcp_retries2
> > sysctl is increased.
> >
> > Signed-off-by: Eric Dumazet <edumazet@...gle.com>
>
> Reviewed-by: Jason Xing <kerneljasonxing@...il.com>

Reviewed-by: Neal Cardwell <ncardwell@...gle.com>

Thanks, Eric!

neal