From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <toke@toke.dk>
Received: from mail2.tohojo.dk (mail2.tohojo.dk [77.235.48.147])
	(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 F0D9B21F5A3
	for <cake@lists.bufferbloat.net>; Mon,  2 Nov 2015 07:27:22 -0800 (PST)
X-Virus-Scanned: amavisd-new at mail2.tohojo.dk
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=201310;
	t=1446478039; bh=93gAVmaW6J0GFAB+Zh5QFU1jCKwtGKvi5DE7VZSI5Ck=;
	h=From:To:Subject:Date;
	b=sCtP7ElqRMwT09IdtMwq3f+JMevhxf/jEhJ+L0lN5h6ydqm4CrjV61N7Jhe5CtlF/
	XzfFO2uryjGePv+La482sG9yl8ekcDz9SXtt1b759cyvJQjkFlqB/eSat4RZQCgg9h
	tqQbufLfCdgMhkOwljzh6yDqllXDMmAPvSvG7Yac=
Sender: toke@toke.dk
Received: by alrua-kau.kau.toke.dk (Postfix, from userid 1000)
	id A476BC402B3; Mon,  2 Nov 2015 16:27:18 +0100 (CET)
From: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
To: cake@lists.bufferbloat.net
Date: Mon, 02 Nov 2015 16:27:18 +0100
X-Clacks-Overhead: GNU Terry Pratchett
Message-ID: <87twp4pgkp.fsf@toke.dk>
MIME-Version: 1.0
Content-Type: text/plain
Subject: [Cake] Testing and build IDs
X-BeenThere: cake@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: Cake - FQ_codel the next generation <cake.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/cake>,
	<mailto:cake-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/cake>
List-Post: <mailto:cake@lists.bufferbloat.net>
List-Help: <mailto:cake-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/cake>,
	<mailto:cake-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Mon, 02 Nov 2015 15:27:45 -0000

For those of you building your own Cake modules for testing:

The Cake build now supports embedding the git hash of the source
repository into the kernel module, which makes it possible to refer back
to the source version from the test results. The latest git version of
Flent will pick this up if pointed at the right box (with
--remote-metadata=HOSTNAME).

For normal builds this should work out of the box. For openwrt, support
went into trunk last Friday to allow the right debug symbol to be
embedded in the .ko. However, by default openwrt doesn't build the
kernel with the configuration parameter that makes it export the value;
you need to enable CONFIG_KERNEL_KALLSYMS which is called "Compile the
kernel with symbol table information" under "Global build settings" in
menuconfig.

In the interest of actually keeping track of the different versions when
comparing test results, I'll encourage those of you who do your own
builds to include this option and to collect this metadata along with
the test results. The latter is as easy as supplying Flent with
--remote-metadata=root@router.ip.addr after setting up a suitable public
key :)

Cheers,

-Toke