From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gentoo-user+bounces-167885-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 699A813888F
	for <garchives@archives.gentoo.org>; Wed,  7 Oct 2015 12:58:20 +0000 (UTC)
Received: from pigeon.gentoo.org (localhost [127.0.0.1])
	by pigeon.gentoo.org (Postfix) with SMTP id 7F0AD21C00E;
	Wed,  7 Oct 2015 12:58:10 +0000 (UTC)
Received: from mail-qk0-f172.google.com (mail-qk0-f172.google.com [209.85.220.172])
	(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 57CBCE07FA
	for <gentoo-user@lists.gentoo.org>; Wed,  7 Oct 2015 12:58:09 +0000 (UTC)
Received: by qkas79 with SMTP id s79so5176331qka.0
        for <gentoo-user@lists.gentoo.org>; Wed, 07 Oct 2015 05:58:08 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=gmail.com; s=20120113;
        h=mime-version:in-reply-to:references:date:message-id:subject:from:to
         :content-type;
        bh=1XYT09zyq7hIL9Yw4KDh8QQaUiVaAxwCD1mfGl52pYQ=;
        b=dmDHqMbZzwpKEm1f7dyDzhp+92oJ0pVpeZnWjrLRYAY0IiCPDg4VHFpfHDsvYVSiMi
         S2FsYc+s9RgpzOvDSmpoSiWUABPqf0c2SOx0Aa6go5o5MfCJxzGIE58KV4L3AM2IAYy3
         P92VPRAZj/vEyWXQgfTA8Gy8wVqR6M1UyGP0gHSmhQZPT3TMNLgjM0DrVk3ymi9eOByc
         NrQdMxO9ppC8Uzpf4/vQosaRtmJ1w1KLecn0B4G2HYYrH2GZAUIuc57xR9uqJMlX+wu6
         QSIzLGh0z1TKhm1iI4Qk8zIkkIKhB6+YAPmlpByhmbISy8rEhILZ8DJPZw6dlRitN2so
         DwEQ==
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
X-Received: by 10.55.198.20 with SMTP id b20mr1157152qkj.35.1444222688310;
 Wed, 07 Oct 2015 05:58:08 -0700 (PDT)
Received: by 10.140.100.241 with HTTP; Wed, 7 Oct 2015 05:58:08 -0700 (PDT)
In-Reply-To: <5613073B.5090600@gmail.com>
References: <CAN0CFw36pf6rHuqo-88-t6PnrO=9S5ySizERaVF7CzZqREDYsA@mail.gmail.com>
	<5613003F.5020303@iinet.net.au>
	<5613073B.5090600@gmail.com>
Date: Wed, 7 Oct 2015 05:58:08 -0700
Message-ID: <CAN0CFw25m1FtbeJ_5jp1Dsy-0k01-WNjOFp0GoQe9VZBEBsJTQ@mail.gmail.com>
Subject: Re: [gentoo-user] strange TCP timeout errors
From: Grant <emailgrant@gmail.com>
To: Gentoo mailing list <gentoo-user@lists.gentoo.org>
Content-Type: text/plain; charset=UTF-8
X-Archives-Salt: d32cf9b8-b859-4a27-a19b-3ad9a0d766a9
X-Archives-Hash: eb2c6b2da52b618e9e0994231a7e94b3

>>> 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?

- Grant