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 5D35620E6EC; Mon, 28 Apr 2025 22:19:57 +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=1745878798; cv=none; b=NxI03NgJr6HkWrZe6AvkgfxHY9MNHxpW++JG8XHT0g7V+LRDgJJWmAGJeitLaV/jR//u826H8DWIN91pJMO+1AL3YACdjvohFqAd6v9hV1U6Tfy+wWagUjDdnZ4mLqCh688uc7aVnqQmZKFKHWD9bFNGgX+HSBnW/kwR+OvUWS4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745878798; c=relaxed/simple; bh=Lahajb51jEfObe1Hyp6/chmzs0TWo8lfU1EyfH2VAgY=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=utwwpBCv8Xv/hdbUScnnRrK/CMhfO5qH1TNHX6N/Td4ASfeqoxRjewQlq5Qc+HKJ4uQ2/xbQS2d/fK+3T2xoODtL2rinsLmNBjoRpYHQSbWjCtkEQ33EKBv8J9ThnP5/2LB4RVeXJTON+RabaCeoM4QsRpcbbUIWoHoC3uwJ1v4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Y6bKrC9z; 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="Y6bKrC9z" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CAD0EC4CEE4; Mon, 28 Apr 2025 22:19:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1745878797; bh=Lahajb51jEfObe1Hyp6/chmzs0TWo8lfU1EyfH2VAgY=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=Y6bKrC9zrywMNQNOy4nFFHbTO4mnCiiv0aDoz5eFkHF9lqtzfX+uYfRI4RnneU/2e WFRjTOO1cArBxKU3PHyiVgTYgdPmlS7+J91kkPoO0+2C3CYv+Fnf56edyvCEM01ZEE BnPJqc6L4DladHKFWT0fAOT5R8yPUXHUNCbjFhfRMa4CM0X9IiQI0I26cuW2RrpQ+k rtSDiFrhPkz6wAS9YsUEobh1QbSwLTFgcj2Q/dc1f2+PRcCvzrtvJSTZPAU8xiNyyJ opPofMxVl7hTRs95W9zUd7vIi2i6/2lSPBGzDgyjffOomp9iG+0y/ObR03A/sk3g8G QmfG/hK3MxzSQ== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id EAD3F3822D43; Mon, 28 Apr 2025 22:20:37 +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-next V7 0/2] veth: qdisc backpressure and qdisc check refactor From: patchwork-bot+netdevbpf@kernel.org Message-Id: <174587883648.1063939.13609783923065664545.git-patchwork-notify@kernel.org> Date: Mon, 28 Apr 2025 22:20:36 +0000 References: <174559288731.827981.8748257839971869213.stgit@firesoul> In-Reply-To: <174559288731.827981.8748257839971869213.stgit@firesoul> To: Jesper Dangaard Brouer Cc: netdev@vger.kernel.org, kuba@kernel.org, bpf@vger.kernel.org, tom@herbertland.com, eric.dumazet@gmail.com, davem@davemloft.net, pabeni@redhat.com, toke@toke.dk, dsahern@kernel.org, makita.toshiaki@lab.ntt.co.jp, kernel-team@cloudflare.com, phil@nwl.cc Hello: This series was applied to netdev/net-next.git (main) by Jakub Kicinski : On Fri, 25 Apr 2025 16:55:25 +0200 you wrote: > This patch series addresses TX drops seen on veth devices under load, > particularly when using threaded NAPI, which is our setup in production. > > The root cause is that the NAPI consumer often runs on a different CPU > than the producer. Combined with scheduling delays or simply slower > consumption, this increases the chance that the ptr_ring fills up before > packets are drained, resulting in drops from veth_xmit() (ndo_start_xmit()). > > [...] Here is the summary with links: - [net-next,V7,1/2] net: sched: generalize check for no-queue qdisc on TX queue https://git.kernel.org/netdev/net-next/c/34dd0fecaa02 - [net-next,V7,2/2] veth: apply qdisc backpressure on full ptr_ring to reduce TX drops https://git.kernel.org/netdev/net-next/c/dc82a33297fc You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html