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	Mon, 10 Aug 2026 21:26:41 +0800 (CST)
From: Ziran Zhang <zhangcoder@yeah.net>
To: Eric Dumazet <edumazet@google.com>
Cc: "David S . Miller" <davem@davemloft.net>,
	Simon Horman <horms@kernel.org>,
	Jakub Kicinski <kuba@kernel.org>,
	Kuniyuki Iwashima <kuniyu@google.com>,
	linux-kernel@vger.kernel.org,
	Neal Cardwell <ncardwell@google.com>,
	netdev@vger.kernel.org,
	Paolo Abeni <pabeni@redhat.com>,
	Ziran Zhang <zhangcoder@yeah.net>
Subject: Re: [PATCH net-next] tcp: use likely() for srtt check in tcp_rtt_estimator()
Date: Mon, 10 Aug 2026 21:25:15 +0800
Message-ID: <20260810132515.6576-1-zhangcoder@yeah.net>
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On Mon, 10 Aug 2026 14:51:09 +0200, Eric Dumazet wrote:
> Many flows are short lived, unfortunately.
> 
> I would suggest not adding a likely() here, and let FDO/LTO decide
> here on a case by case.

Hi Eric,

Thank you for your review.

I didn't fully take into account the large number of short-lived flows 
in real-world networks. I agree with your assessment, so I will drop this patch.

Thanks,
Ziran Zhang