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=-8.4 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_IN_DEF_DKIM_WL 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 337BAC35240 for ; Fri, 31 Jan 2020 14:56:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ED62D20705 for ; Fri, 31 Jan 2020 14:56:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="P54WA2PG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729071AbgAaO40 (ORCPT ); Fri, 31 Jan 2020 09:56:26 -0500 Received: from mail-yw1-f68.google.com ([209.85.161.68]:36556 "EHLO mail-yw1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729012AbgAaO40 (ORCPT ); Fri, 31 Jan 2020 09:56:26 -0500 Received: by mail-yw1-f68.google.com with SMTP id n184so4942060ywc.3 for ; Fri, 31 Jan 2020 06:56:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=f3RC/SQifpuY8VOrKnWaTREoPKqzmE43+PbrL0jAXis=; b=P54WA2PGuxfHKuFWwjrCbu/PdvMVuTnU6Dy7LvFOdRSFKsLV2oQuVF4ER8MQlrTzXG BXeSJzDcUOkjj1ktcmYJEd+ANaql3n7CK1hTX1lLL/noTkNXvixZOjO1xhQKB4i7oNX/ Jz0RTVlQUZ6txzCjiRFNpCIY+moznMKuzZ/jwGn076BYfEQ457YobGxXeax8y9d7Sfk/ B2HZTKv6CE2qMyFykdxTS3+qtSqlOe24FS78clS9dvGX9mg0/TAofXrBoUqJpS+fjcQf znE14zc4DrIFSnqC41wvvUaa13UJl7g0WxziSCWoLP/A7YDivoTpGwdYYNcAJzpmmvMb Ollg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=f3RC/SQifpuY8VOrKnWaTREoPKqzmE43+PbrL0jAXis=; b=ZHqBRZ0bHWNFFyuVW9s0s82aTQxv7NnuoOqL9v5E1yR7Nk9VWs/LjLPtEWgVk0+Kvu By24QtzUong3uAJLGzC/0M83dM6z5gf2gOlmRYQ3qmI8igWZJ9EtGC8AZzvPrAGMnlU2 Q6Fyty1lMlIChVQbMDaUhlEx3NQotHjzlOdqoLphj2SurZwBedcdIL9WQuIVzWJ/iJZk TeosZru+v7wOVgstpIGTALXUehPWE1Wu8y7xZgeY1Hi3jhb99MZkdGmtHL9Y2iXFNXHz kjIY+DBojSYp3PODo1ntG9JhSFubYrSYP/NjTHnuJOhOPjc+s/jD7ORiH33llEBgqAYy UyAQ== X-Gm-Message-State: APjAAAW+GwonR0oTenja1B0xrJUzpeO5TXTsbYxnXCzo9CQfVdwHAUzA eFUGzXc6bNUnQbePS+cPW495LPbVeBVn6M9SSGZGIFzY X-Google-Smtp-Source: APXvYqxA/y+W7hbdbObbPKgxxIFfPSwtpl3SGq3C/Avbu4JwPSIPL0Zm0sJFTvez7VjM7JtzbYh23B12TQvZ1QBQ0ck= X-Received: by 2002:a0d:c701:: with SMTP id j1mr1163590ywd.52.1580482585227; Fri, 31 Jan 2020 06:56:25 -0800 (PST) MIME-Version: 1.0 References: <20200131122421.23286-1-sjpark@amazon.com> <20200131122421.23286-4-sjpark@amazon.com> In-Reply-To: <20200131122421.23286-4-sjpark@amazon.com> From: Eric Dumazet Date: Fri, 31 Jan 2020 06:56:13 -0800 Message-ID: Subject: Re: [PATCH 3/3] selftests: net: Add FIN_ACK processing order related latency spike test To: sjpark@amazon.com Cc: David Miller , Shuah Khan , netdev , "open list:KERNEL SELFTEST FRAMEWORK" , LKML , sj38.park@gmail.com, aams@amazon.com, SeongJae Park Content-Type: text/plain; charset="UTF-8" Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org On Fri, Jan 31, 2020 at 4:25 AM wrote: > > From: SeongJae Park > > This commit adds a test for FIN_ACK process races related reconnection > latency spike issues. The issue has described and solved by the > previous commit ("tcp: Reduce SYN resend delay if a suspicous ACK is > received"). > I do not know for other tests, but using a hard coded port (4242) is going to be flakky, since the port might be already used. Please make sure to run tests on a separate namespace.