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=-3.8 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 142C8C4338F for ; Thu, 22 Jul 2021 22:16:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E5F4560E77 for ; Thu, 22 Jul 2021 22:16:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232227AbhGVVfh (ORCPT ); Thu, 22 Jul 2021 17:35:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40754 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232170AbhGVVfg (ORCPT ); Thu, 22 Jul 2021 17:35:36 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3652C061575 for ; Thu, 22 Jul 2021 15:16:10 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id q17-20020a17090a2e11b02901757deaf2c8so1312909pjd.0 for ; Thu, 22 Jul 2021 15:16:10 -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=qlDIb/U95h4PDjbbvFS2gpU1qWZdbi8kSumvPaXhfP8=; b=KpMuHkN7WicFKlh7lbq4Jg1Hw2wpPSoSJ/RzWiU6AGrBiKV8gp/k05DTbJCJ0lGi7A OV+28rCQsNVoKwJV70lAvz8aK7UJP2HViHfVwh8qjWchahfQ9yfyAklhE5B+9fY1kytE LkjddP+MY8Jr4sYPt6whSYyN8qDMhe1AEZOZRt8nJE9ph9JnG5lN+Rdqz/cGUYYcmaj9 MsDO4SXBIsPp/Mknj5ssSlTwTb8o/FSzarVaL9Zg7IwRkarcJuk5v/mEMyPxs9ZGu+2f 8NI/UQ7/VAsszylyZS0TnOYtWwmq65T/PbJFqOnO5NTqMxXNT64VcYa1gzvq0mMMo28x 6mLQ== 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=qlDIb/U95h4PDjbbvFS2gpU1qWZdbi8kSumvPaXhfP8=; b=t0lBk/3lgcewK54CYotaQKrUdrRxlU0DwA6hHRfVJaUM4vChigPYqAnTC3m4rU6g4m hcr+B7G+5AbPxum8yw1d+DSVP2DDbUO7xQZTk911D9pSlamIS3F08Ufsv77pgYPkVZP5 0FDNHOiWd2yJZBebz/Fn+QocnyQiaKft7lWd1cTLnJAApGFU0x4p+ALqjoJtMiE+N1AT +PtHy45INIW+BatGRrboOppRjZTXlosDUi3TfoZvzUITtku1rHwwcMDneXgWWccb4j3z hvUr2K0COHObmPXdw2gS+OFaYFKJZplQ58O3eiSq1wi15262btbkmRBz9pqcQnkAlYl7 JHNA== X-Gm-Message-State: AOAM531GapgBlDodvsfKPgucaZDtlRkRjACPUHcqQRtUR0NtMvrmc8E/ VU5DKUr0HHYnTBO5S9Nn6p3iWGWswKyviQ== X-Google-Smtp-Source: ABdhPJwz0ajWehklmRYEyOIWRpJBMFwP7dJork31RpZVjjpNhLYL5EI8c9jXTOMlGWcVlpQrcW9VQA== X-Received: by 2002:a05:6a00:a8a:b029:356:be61:7f18 with SMTP id b10-20020a056a000a8ab0290356be617f18mr1778052pfl.29.1626992169892; Thu, 22 Jul 2021 15:16:09 -0700 (PDT) Received: from hermes.local (204-195-33-123.wavecable.com. [204.195.33.123]) by smtp.gmail.com with ESMTPSA id j21sm26306711pjz.26.2021.07.22.15.16.09 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 22 Jul 2021 15:16:09 -0700 (PDT) Date: Thu, 22 Jul 2021 15:16:06 -0700 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: Fw: [Bug 213827] New: Stall In TCP/IP Message-ID: <20210722151606.4dd189da@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: Thu, 22 Jul 2021 22:03:50 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 213827] New: Stall In TCP/IP https://bugzilla.kernel.org/show_bug.cgi?id=213827 Bug ID: 213827 Summary: Stall In TCP/IP Product: Networking Version: 2.5 Kernel Version: Observed 5.9.2. Confirmed on 5.12 and 5.13 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Other Assignee: stephen@networkplumber.org Reporter: martenst@crankuptheamps.com Regression: No Created attachment 298007 --> https://bugzilla.kernel.org/attachment.cgi?id=298007&action=edit A basic repro of the observed issue. We see an unexpected pause of 3-60 seconds where the test no longer receives data, recv() is blocking, netstat shows data is sitting in the 7777 server's send queue and 0 bytes are in the test's receive queue. Setting net.core.rmem_max seems to be a key factor. For our testing we used net.core.rmem_max=16777216 See attached README and repro. -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.