Re: [PATCH net-next] tcp: use likely() for srtt check in tcp_rtt_estimator()

Ziran Zhang <[email protected]> Mon, 10 Aug 2026 21:25:15 +0800

Newsgroups	org.kernel.vger.netdev,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

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