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[2604:1380:4601:e00::3]) by mx.google.com with ESMTPS id m5-20020a170906720500b00a30fc521223si1348932ejk.76.2024.02.02.18.33.11 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 02 Feb 2024 18:33:11 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel+bounces-50825-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) client-ip=2604:1380:4601:e00::3; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=UNbrVhlJ; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-50825-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:4601:e00::3 as permitted sender) smtp.mailfrom="linux-kernel+bounces-50825-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by am.mirrors.kernel.org (Postfix) with ESMTPS id 3E75F1F276F0 for ; Sat, 3 Feb 2024 02:33:11 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 78DFD567F; Sat, 3 Feb 2024 02:33:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="UNbrVhlJ" 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 9CBBC63B1; Sat, 3 Feb 2024 02:33:00 +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=1706927580; cv=none; b=rExRYlT+vRwwOMdqv6x2vBHfvNgKXL7aP2H/c0i6Pgo2zBUpWbxoENvZXUvIUEbbT3V1E8shHaLn0JJEtZPeRwGn7eUnS+6RrixBxfw4Jrnliwr3FNHPKhCbJrXWROJ6/0JSZ3fB6VtbT/O+wygTjeCWK6x9uLtFiIllwhy9DEA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706927580; c=relaxed/simple; bh=oPKPWVZc3lK5bY74y4kgZ4jboVGXI984yXwFNj9D9fA=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=eyttMPVhenAP+/RfN06l03NgRUTJHtGOXG99D+E/i0eWRn3zUjG2auukqFcYcyh/w98Poi448d0J767357ZZoN+zOhyx5ks0/RkMNExf8luNu2gXoX+zalO4oT1Y6KNB0pJpKuxafglYKjvj3AFWh0+DkaJ6G0nHBI4NtGD9KSg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UNbrVhlJ; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9EDFC433F1; Sat, 3 Feb 2024 02:32:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1706927580; bh=oPKPWVZc3lK5bY74y4kgZ4jboVGXI984yXwFNj9D9fA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=UNbrVhlJAyx42S6ix5Yw0LW7LkQBg3nvR4ug7XwYHMCzJfAp36GXShKnVWpGJHQlu uwprJewL16ZZJIT4Q5wgqtNiFl2tLtGOckQlkiFDadP6lgfWKv90zOVZVZj9XJX30J KdI+zXwe6dnRfYJYoSD0hwCumLLXoVjY+MBQgkpeCQVHMbmcw3ibEI/Fr86vfyet2s +zT7oG7ZKPT3CUzJzCVG7todKfxnC9A6D3u6Pwpgivq8Ctqlxzj9KhLIHycOk73zok aRenfpxFW11z8RSVSL4m9u078TzOAq9UVxCWQ7xafs2SseReFogcARU51cpi2C0aQN 3l5IoVwlWdBsA== Date: Fri, 2 Feb 2024 18:32:59 -0800 From: Jakub Kicinski To: Mikhail Gavrilov Cc: Randy Dunlap , Linux List Kernel Mailing , Greg KH , Network Development Subject: Re: This is the fourth time =?UTF-8?B?SeKAmXZl?= tried to find what led to the regression of outgoing network speed and each time I find the merge commit 8c94ccc7cd691472461448f98e2372c75849406c Message-ID: <20240202183259.33859154@kernel.org> In-Reply-To: <881d47bf-5f5d-49d6-9502-3b22899eb253@infradead.org> References: <43a769dd-aa09-4da3-a226-ecef98f32e0f@infradead.org> <881d47bf-5f5d-49d6-9502-3b22899eb253@infradead.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Thanks for the forward! On Fri, 2 Feb 2024 17:16:41 -0800 Randy Dunlap wrote: > >> When I copy files from one computer to another and kernel snapshot > >> builded from commit 296455ade1fd I have 97-110MB/sec which is almost > >> max speed of 1Gbps link. > >> When I move to commit 9d1694dc91ce I have only 66-70MB/sec which is > >> significantly slower. There isn't that much networking in between the two. Is any of the CPU cores at 100% when you are transferring the data on the bad commit? Do you have any iptables / nftables rules? Are you using TLS in the transfer? Did you try reverting f1172f3ee3a98754?