From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C0CC913CF98 for ; Thu, 23 May 2024 10:40:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716460828; cv=none; b=nVjD+INmByspmtTmhd144KjdvTZ7+U+6ezY2JmcTiTQ2iw+cDBH7i99TrECMuOV+ja1vdrwudo/cS5tCKXFUgTh40OmztGv8WOBuM4qFgPgQqbxLzGk2FXjoUE+gGgqqydjxUO+k+5g7X+9FLcig50JHpbB+cFs+lSWdGadDcnk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1716460828; c=relaxed/simple; bh=hyNalhUOLxxLhfM1W+2XBEta4ZWUh4Rd7lrEjzOtQTQ=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=hzJkFAr74ZDAyX7iCFcstg4mhBq9ryHw4U4zXL72ChFdsiCmr8Ya+e+/t/bTwQa3jMOFtgITrSRteUqEzxNRKrkfCZhyB36NmdwfS4tTNMJKdWrI5F7b5LbWkj82l4m98fV5vXOqbcJsHzTeE+eabs1fWOesxA0yWjMEnhB09Bk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=MBw5ml6l; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="MBw5ml6l" Received: by smtp.kernel.org (Postfix) with ESMTPS id 5B3DFC32789; Thu, 23 May 2024 10:40:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1716460828; bh=hyNalhUOLxxLhfM1W+2XBEta4ZWUh4Rd7lrEjzOtQTQ=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=MBw5ml6lgkAkTD2FekqmhtJptQX7NrDNdOPVLy8eCVJ3Q6OjyQ5H3QdlfIRVedWU/ kG3U5WgGh+oRr+jbgiWjoAsX80S3OG5OrUIIWJgV7XgRMe7F1YPMWJnWJ2qy+g6OvP D3PeU0ykoM0e4tSOaZsRu1JbWLhKVWIuCC1t0Hi0qXRzYPIYL2uioavmUTDNgHuFgu 694DxzlAUTbRNNJqGAi7+4D3g6129TZGSqI4dGW0MpOlNNieTrFT2WHrzzp/2LcjdB PqEVMyhylXnNVfxDs7RmK985DbE/kOgDzuTZwp8YKMOvDbx4INmYAarSXVC2vEsKQC GNQdoOmz9j8SA== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id 47BC7C43333; Thu, 23 May 2024 10:40:28 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net] tcp: remove 64 KByte limit for initial tp->rcv_wnd value From: patchwork-bot+netdevbpf@kernel.org Message-Id: <171646082828.30155.10245469375676223396.git-patchwork-notify@kernel.org> Date: Thu, 23 May 2024 10:40:28 +0000 References: <20240521134220.12510-1-kerneljasonxing@gmail.com> In-Reply-To: <20240521134220.12510-1-kerneljasonxing@gmail.com> To: Jason Xing Cc: edumazet@google.com, dsahern@kernel.org, kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net, ncardwell@google.com, netdev@vger.kernel.org, kernelxing@tencent.com Hello: This patch was applied to netdev/net.git (main) by Paolo Abeni : On Tue, 21 May 2024 21:42:20 +0800 you wrote: > From: Jason Xing > > Recently, we had some servers upgraded to the latest kernel and noticed > the indicator from the user side showed worse results than before. It is > caused by the limitation of tp->rcv_wnd. > > In 2018 commit a337531b942b ("tcp: up initial rmem to 128KB and SYN rwin > to around 64KB") limited the initial value of tp->rcv_wnd to 65535, most > CDN teams would not benefit from this change because they cannot have a > large window to receive a big packet, which will be slowed down especially > in long RTT. Small rcv_wnd means slow transfer speed, to some extent. It's > the side effect for the latency/time-sensitive users. > > [...] Here is the summary with links: - [net] tcp: remove 64 KByte limit for initial tp->rcv_wnd value https://git.kernel.org/netdev/net/c/378979e94e95 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html