From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30C76C4338F for ; Thu, 12 Aug 2021 16:25:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0C31560C40 for ; Thu, 12 Aug 2021 16:25:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232124AbhHLQZn (ORCPT ); Thu, 12 Aug 2021 12:25:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229519AbhHLQZm (ORCPT ); Thu, 12 Aug 2021 12:25:42 -0400 Received: from mail-pj1-x1031.google.com (mail-pj1-x1031.google.com [IPv6:2607:f8b0:4864:20::1031]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56B33C061756 for ; Thu, 12 Aug 2021 09:25:17 -0700 (PDT) Received: by mail-pj1-x1031.google.com with SMTP id j1so10516380pjv.3 for ; Thu, 12 Aug 2021 09:25:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=0DW/8Jvb6Vm7xQoGvfgr8pZ4+8BmmfDZIqJ9Qdm8fqI=; b=R76iMLNlT06VrHzF6r4/Z+AkzWjJAcOplDT8hRDqTe0KNGCZm7EDaYLtPkWImLsXrJ OSPUJD7MARw4+V/GEFRFSUVKY07kj5Kih9fKY8VbFeIJ0sZHpSr5DOF9RuDen0IJAwbr EyGvGR7c2Pc52pOl6VM/o8cRezIj56OYMQUVP1S0EseRGn/JIsmPCADQ6e0neMZzzmWQ R4ukmETPN68kCjdtJdoixtw6w6Xa8J0YnTc9rbSCsErC+Q2EU/VrNKTVT5EE74D/15/X WnBHvkGZhwsI3Gx05m3TMXNfRsY6xMKoGnUAjoKYg3nDOEk3eqLWD7EHIjeg618nZOgp pflg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:subject:message-id:mime-version :content-transfer-encoding; bh=0DW/8Jvb6Vm7xQoGvfgr8pZ4+8BmmfDZIqJ9Qdm8fqI=; b=CCy33lpmQ3kRFPdvzdNPjPjxBphWcky22+zGczh3TGY5uUm5eRQw1raE+qEcJLfIMU tc/Jd2+8oT3ZsFL2N9XsQeiRDXMwOaxVGT3SAfxJi2NXdD+Qd6vBkFwI34m2TwSPsuXX U+VzwCtQeTDGe652auGidEdJyz7fOFKR+m0hHWgxyMb8Q5Sgc0bQZ/gOS2WyXGzgL3i9 eK1x9V/vLbkUYxy8+sZrtpLG6n5sO02+S79QpcvLBStm3ctl5vH8iNHTqMRkq/PxG9cN KSkqbZ0uKkLGkjQQ3GJ8O1wCoRDJn+eIDwH/+3HrpMSjM8u9/tMcUi4QHvFL67p5nZ8V HTNg== X-Gm-Message-State: AOAM530MgwdxxUUuCdRzs8SxEteA4KqqJb2TuFLudDoxgufBRKaxiWso rZTOr3E/ChsF8nQDZK1o3DuYqXuCsu/yFA== X-Google-Smtp-Source: ABdhPJypKed7v7BmmBSvTsciDerG4y5m9WagmMNCIo399q10LNgmHNOccJLMShB4LXduEw35moeH4w== X-Received: by 2002:a17:90a:eb08:: with SMTP id j8mr12763406pjz.94.1628785516320; Thu, 12 Aug 2021 09:25:16 -0700 (PDT) Received: from hermes.local (204-195-33-123.wavecable.com. [204.195.33.123]) by smtp.gmail.com with ESMTPSA id q18sm4061759pfj.178.2021.08.12.09.25.15 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Aug 2021 09:25:16 -0700 (PDT) Date: Thu, 12 Aug 2021 09:25:13 -0700 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: Fw: [Bug 213943] New: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L) Message-ID: <20210812092513.3e5ed199@hermes.local> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Begin forwarded message: Date: Mon, 02 Aug 2021 14:05:30 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 213943] New: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L) https://bugzilla.kernel.org/show_bug.cgi?id=213943 Bug ID: 213943 Summary: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L) Product: Networking Version: 2.5 Kernel Version: 5.13.x Hardware: Intel OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: IPV4 Assignee: stephen@networkplumber.org Reporter: ealrann@gmail.com Regression: No Hello, On a server, I use to receive files (parallel cp with NFS4) with a 10g NIC (Intel X710-T2L). I can usually achieve a total speed close to 1 GB/s (generally 4 cp at the same time, targeted to 4 different HDD). Switching to kernel 5.13 (Archlinux) with the exact same configuration, my speed is now limited at 250MB/s. Rolling back to a previous kernel fix the speed. The problem is maybe in the last Intel driver i40e, but I don't really know how to investigate more. The problem still appear in 5.13.7 (last one at the moment). -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.