From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <swmike@swm.pp.se>
Received: from uplift.swm.pp.se (swm.pp.se [212.247.200.143])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(Client did not present a certificate)
	by huchra.bufferbloat.net (Postfix) with ESMTPS id 43BE321F7EC
	for <cerowrt-devel@lists.bufferbloat.net>;
	Fri, 26 Jun 2015 09:31:21 -0700 (PDT)
Received: by uplift.swm.pp.se (Postfix, from userid 501)
	id 0150FA1; Fri, 26 Jun 2015 18:31:18 +0200 (CEST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=swm.pp.se; s=mail;
	t=1435336279; bh=UcA199z6sGKauVV6ZBRXN+/nUo5fbXbwsXlhRZZWsK0=;
	h=Date:From:To:cc:Subject:In-Reply-To:References:From;
	b=VIEBzbKmvWShVcZdDpcCKy/2y1qi27G9aHCw40pRuN7LxkV34gJ0MVNG8x+I+w+XA
	KFgFy+9Bn6OK84icZSbIfHa85VseeyjarpLdRy2pxPF+ueNG5hTAMHs9yNeYswrxHV
	3GcMtliQo4+I/uVc5UPviomfWyf/IpQrMySFO73s=
Received: from localhost (localhost [127.0.0.1])
	by uplift.swm.pp.se (Postfix) with ESMTP id F11F99F;
	Fri, 26 Jun 2015 18:31:18 +0200 (CEST)
Date: Fri, 26 Jun 2015 18:31:18 +0200 (CEST)
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Jonathan Morton <chromatix99@gmail.com>
In-Reply-To: <CAJq5cE3W_yXgK4Ww+jWSwYD0EPEEMTbN0QKWMkjocYx98UHHUQ@mail.gmail.com>
Message-ID: <alpine.DEB.2.02.1506261826510.9487@uplift.swm.pp.se>
References: <CANmMgnF7eE4_eZu=LySLj9LEtqS5+b=c8zMf3c4vOb2sHx0a5A@mail.gmail.com>
	<CANmMgnFLypimDR1Hn8w4WW-UNqxZny8UL4O0C+cD_0+Y_ZTfgw@mail.gmail.com>
	<CAA93jw70pc_gKzDjknrDXyFh-uOgQ82a8wgEYEVEKW1+mpNvGQ@mail.gmail.com>
	<55847E32.9000405@gmail.com>
	<CAA93jw55+zPONQv=FZHP8t8ehfgBb_vCfYw-ZWX1Sa8OsT0iZg@mail.gmail.com>
	<5584823E.4040207@gmail.com>
	<CAA93jw4gndJFGyQfdVwxu_D_5R-BifKBEKRo2qbsoRxU0qtYvw@mail.gmail.com>
	<CAA93jw6LkVW0C=Vm6rxVGt8RtoB6P5TxHmFf45Jqy-kBPasUWQ@mail.gmail.com>
	<CAK-n8j4NSBLFssSNjHvjz+KV+TZcuuDTYn98L2EQU1mv3+StLg@mail.gmail.com>
	<0129B5FB-9D1B-45FF-84CA-492A6A0B638B@gmx.de>
	<alpine.DEB.2.02.1506231436440.9487@uplift.swm.pp.se>
	<A76B3051-B521-4FAB-B81C-66835D053FE5@gmx.de>
	<alpine.DEB.2.02.1506241233560.9487@uplift.swm.pp.se>
	<43D5C3CE-F1F4-4BA5-AEB9-55348661C7BA@gmx.de>
	<alpine.DEB.2.02.1506261252140.9487@uplift.swm.pp.se>
	<alpine.DEB.2.02.1506261640320.9487@uplift.swm.pp.se>
	<CAJq5cE3W_yXgK4Ww+jWSwYD0EPEEMTbN0QKWMkjocYx98UHHUQ@mail.gmail.com>
User-Agent: Alpine 2.02 (DEB 1266 2009-07-14)
Organization: People's Front Against WWW
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII
Cc: cerowrt-devel@lists.bufferbloat.net
Subject: Re: [Cerowrt-devel] performance numbers from WRT1200AC (Re: Latest
 build test - new sqm-scripts seem to work; "cake overhead 40" didn't)
X-BeenThere: cerowrt-devel@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: Development issues regarding the cerowrt test router project
	<cerowrt-devel.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/cerowrt-devel>,
	<mailto:cerowrt-devel-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/cerowrt-devel>
List-Post: <mailto:cerowrt-devel@lists.bufferbloat.net>
List-Help: <mailto:cerowrt-devel-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/cerowrt-devel>,
	<mailto:cerowrt-devel-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Fri, 26 Jun 2015 16:31:50 -0000

On Fri, 26 Jun 2015, Jonathan Morton wrote:

> Hypothesis: this might have to do with the receive path. Some devices might
> have more capacity than others to buffer inbound packets until the CPU can
> get around to servicing them.

Is there a way to tell? I am better at diagnosing Cisco CPU based routers 
than Linux ones. I looked in /sys/class/net/ethX/statistics but these 
drops are not recorded there.

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se