From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 307E013888F for ; Wed, 7 Oct 2015 14:23:24 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 805F921C00E; Wed, 7 Oct 2015 14:23:16 +0000 (UTC) Received: from mail-wi0-f171.google.com (mail-wi0-f171.google.com [209.85.212.171]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 5A9ADE07FC for ; Wed, 7 Oct 2015 14:23:15 +0000 (UTC) Received: by wiclk2 with SMTP id lk2so216092152wic.0 for ; Wed, 07 Oct 2015 07:23:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-type:content-transfer-encoding; bh=3R6j0HSFYSuFTB9eHtzVVeg0/8kE/lYbKk6fBOyDlAs=; b=g133fpgOQd4X2TfTQXxuwqjZscM/2iVWZ1mOz53asn68wihuSZ4ezNrAmAlMfTV6Tp XNeHvmUO783QO1z0t9qQxas/U7zOx6CFJAeXmxDkewceEYF+8CgZUsrBTtcZSdrvoDQn +XjqFcV8fGeMZB5I72SuwGlkuWW0gCadOjowlQL7zYpyxjRxONV/ks/77rkEucVtdpz4 KmbA0dG4DIE+MrwHL3xljTQcIMuQf+0hec+Y4x2NkPs1Mls9fDz2NFOGFbTg0T8HluIJ dxmhke6i32ieol+Tmu82Yof3jXJAe8uVmMgTit4XFuYUZoT5fC/yaEEjYABBqFTW4b+X KM5g== X-Received: by 10.194.52.106 with SMTP id s10mr1467585wjo.35.1444227793924; Wed, 07 Oct 2015 07:23:13 -0700 (PDT) Received: from [172.20.0.41] ([105.210.54.110]) by smtp.googlemail.com with ESMTPSA id iw8sm39477765wjb.5.2015.10.07.07.23.12 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 07 Oct 2015 07:23:13 -0700 (PDT) Subject: Re: [gentoo-user] strange TCP timeout errors To: gentoo-user@lists.gentoo.org References: <5613003F.5020303@iinet.net.au> <5613073B.5090600@gmail.com> From: Alan McKinnon Message-ID: <56152AAD.5030003@gmail.com> Date: Wed, 7 Oct 2015 16:22:37 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Archives-Salt: bf9512ad-2025-4c6e-bbd4-001eb04f9145 X-Archives-Hash: 2186494dd71239f858a0cebaf7bca25f On 07/10/2015 14:58, Grant wrote: >>>> I've attached a PNG from Munin showing the TCP timeout errors on my >>>> Gentoo server over the past month. The data is expressed in timeouts >>>> per second and that rate is shown to be steadily increasing over the >>>> past month. That seems strange to me. Munin doesn't show any other >>>> data point increasing like this over the time period. Any ideas? >>>> >>>> - Grant >>>> >>> >>> weird - does it reset on an interface restart or reboot? >> >> this would be my test #1 > > > I rebooted and the rate of errors has dropped off to almost nothing. > > >>> Can you verify its not an artefact within munin (how?) >> >> In theory, a misconfigured graph can do this. Munin can draw many >> different types of graph, including cumulative values. Even for a data >> type like this which is X events per unit time, if you tell munin to add >> them all up, it will do so and graph it. >> >> Qucik test is to look at the graph config. > > > This graph lives in the "network" section of the munin web interface. > There is no matching section in /etc/munin/plugin-conf.d/munin-node so > it should be be using the default config. > > Any ideas based on this new info? A few :-) I can't find the plugin that delivers that graph though. Maybe I just don't have it, maybe it comes from contrib/ What's your USE for munin? What do you have in "ls -al /etc/munin/plugins/" ? -- Alan McKinnon alan.mckinnon@gmail.com