From owner-freebsd-performance@FreeBSD.ORG  Wed Sep 24 15:16:22 2014
Return-Path: <owner-freebsd-performance@FreeBSD.ORG>
Delivered-To: freebsd-performance@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id ABAEBFB4
 for <freebsd-performance@FreeBSD.org>; Wed, 24 Sep 2014 15:16:22 +0000 (UTC)
Received: from cu01176a.smtpx.saremail.com (cu01176a.smtpx.saremail.com
 [195.16.150.151])
 (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 66673B5B
 for <freebsd-performance@FreeBSD.org>; Wed, 24 Sep 2014 15:16:22 +0000 (UTC)
Received: from [172.16.1.232] (izaro.sarenet.es [192.148.167.11])
 by proxypop03.sare.net (Postfix) with ESMTPSA id 8319A9DD043
 for <freebsd-performance@FreeBSD.org>; Wed, 24 Sep 2014 17:16:13 +0200 (CEST)
From: Borja Marcos <borjamar@sarenet.es>
Content-Type: text/plain;
	charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (1.0)
Subject: Re: I like iostat, but...
Message-Id: <5DBB0BDC-92FB-44FF-8869-67CFA2B52C26@sarenet.es>
Date: Wed, 24 Sep 2014 17:16:14 +0200
References: <20140924150915.GC1221@albert.catwhisker.org>
In-Reply-To: <20140924150915.GC1221@albert.catwhisker.org>
To: "freebsd-performance@FreeBSD.org" <freebsd-performance@FreeBSD.org>
X-Mailer: iPad Mail (12A365)
X-BeenThere: freebsd-performance@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Performance/tuning <freebsd-performance.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-performance>, 
 <mailto:freebsd-performance-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-performance/>
List-Post: <mailto:freebsd-performance@freebsd.org>
List-Help: <mailto:freebsd-performance-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-performance>, 
 <mailto:freebsd-performance-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 24 Sep 2014 15:16:22 -0000





> On 24/9/2014, at 17:09, David Wolfskill <david@catwhisker.org> wrote:
>=20
>=20
>> On Tue, Sep 23, 2014 at 10:45:14AM +0200, Borja Marcos wrote:
>> ...=20
>> Anyway, for disk stats GEOM offers a nice API. You can get delays per GEO=
M provider, bandwidths, etc.
>=20
>>=20
>=20
>=20
> Folks, I appreciate the suggestions, but they address problems other
> than the one I am trying to solve.
>=20
> In particular:
> * I require that the tool must only depend on components of base FreeBSD;
>  thus, I don't need to perturb the system I want to measure by
>  installing otherwise unneeded software on it.


Devilator has no dependencies. It reads sysctl and geom.


>=20
> Basically, I have something that works "well enough" for things
> like CPU counters, memory usage (at the rather coarse granularity
> that top(1) provides, vs. "vmstat -m" output), load avergaes, and
> NIC counters, and is readily extensible to any univariate (or simple
> list of multivariate) (non-opaque) sysctl OIDs.  I'd like to be
> able to include information from the I/O subsystem -- in particular,
> data that is accessible from "iostat -x".

Check the diskbw.c module. Actually Most of it is borrowed from gstat(8). Ju=
st format the output  data as you wish ;)

But you don't need Orca. The agent just creates text files.=20

Cheers,




Borja.