From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gentoo-user+bounces-167888-garchives=archives.gentoo.org@lists.gentoo.org>
Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80])
	by finch.gentoo.org (Postfix) with ESMTP id 307E013888F
	for <garchives@archives.gentoo.org>; 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 <gentoo-user@lists.gentoo.org>; Wed,  7 Oct 2015 14:23:15 +0000 (UTC)
Received: by wiclk2 with SMTP id lk2so216092152wic.0
        for <gentoo-user@lists.gentoo.org>; 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 <gentoo-user@lists.gentoo.org>
        (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: <CAN0CFw36pf6rHuqo-88-t6PnrO=9S5ySizERaVF7CzZqREDYsA@mail.gmail.com>
 <5613003F.5020303@iinet.net.au> <5613073B.5090600@gmail.com>
 <CAN0CFw25m1FtbeJ_5jp1Dsy-0k01-WNjOFp0GoQe9VZBEBsJTQ@mail.gmail.com>
From: Alan McKinnon <alan.mckinnon@gmail.com>
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: <mailto:gentoo-user@lists.gentoo.org>
List-Help: <mailto:gentoo-user+help@lists.gentoo.org>
List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org>
List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org>
List-Id: Gentoo Linux mail <gentoo-user.gentoo.org>
X-BeenThere: gentoo-user@lists.gentoo.org
Reply-to: gentoo-user@lists.gentoo.org
MIME-Version: 1.0
In-Reply-To: <CAN0CFw25m1FtbeJ_5jp1Dsy-0k01-WNjOFp0GoQe9VZBEBsJTQ@mail.gmail.com>
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