netdev - Re: [PATCH net-next 00/11] tcp: receive side improvements

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: 
 <174733504401.3213749.1321333360222183745.git-patchwork-notify@kernel.org>
Date: Thu, 15 May 2025 18:50:44 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Eric Dumazet <edumazet@...gle.com>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 ncardwell@...gle.com, horms@...nel.org, kuniyu@...zon.com,
 jonesrick@...gle.com, weiwan@...gle.com, netdev@...r.kernel.org,
 eric.dumazet@...il.com
Subject: Re: [PATCH net-next 00/11] tcp: receive side improvements

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Tue, 13 May 2025 19:39:08 +0000 you wrote:
> We have set tcp_rmem[2] to 15 MB for about 8 years at Google,
> but had some issues for high speed flows on very small RTT.
> 
> TCP rx autotuning has a tendency to overestimate the RTT,
> thus tp->rcvq_space.space and sk->sk_rcvbuf.
> 
> This makes TCP receive queues much bigger than necessary,
> to a point cpu caches are evicted before application can
> copy the data, on cpus using DDIO.
> 
> [...]

Here is the summary with links:
  - [net-next,01/11] tcp: add tcp_rcvbuf_grow() tracepoint
    https://git.kernel.org/netdev/net-next/c/c1269d3d12b8
  - [net-next,02/11] tcp: fix sk_rcvbuf overshoot
    https://git.kernel.org/netdev/net-next/c/65c5287892e9
  - [net-next,03/11] tcp: adjust rcvbuf in presence of reorders
    https://git.kernel.org/netdev/net-next/c/63ad7dfedfae
  - [net-next,04/11] tcp: add receive queue awareness in tcp_rcv_space_adjust()
    https://git.kernel.org/netdev/net-next/c/ea33537d8292
  - [net-next,05/11] tcp: remove zero TCP TS samples for autotuning
    https://git.kernel.org/netdev/net-next/c/d59fc95be9d0
  - [net-next,06/11] tcp: fix initial tp->rcvq_space.space value for passive TS enabled flows
    https://git.kernel.org/netdev/net-next/c/cd171461b90a
  - [net-next,07/11] tcp: always seek for minimal rtt in tcp_rcv_rtt_update()
    https://git.kernel.org/netdev/net-next/c/b879dcb1aeec
  - [net-next,08/11] tcp: skip big rtt sample if receive queue is not empty
    https://git.kernel.org/netdev/net-next/c/a00f135cd986
  - [net-next,09/11] tcp: increase tcp_limit_output_bytes default value to 4MB
    https://git.kernel.org/netdev/net-next/c/9ea3bfa61b09
  - [net-next,10/11] tcp: always use tcp_limit_output_bytes limitation
    https://git.kernel.org/netdev/net-next/c/c4221a8cc3a7
  - [net-next,11/11] tcp: increase tcp_rmem[2] to 32 MB
    https://git.kernel.org/netdev/net-next/c/572be9bf9d0d

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html