----- Original Message ---- > From: "Stevens, Weston J" <[email protected]> > To: Martin Knoblauch <[email protected]> > Cc: "[email protected]" ><[email protected]> > Sent: Tue, September 21, 2010 8:33:10 PM > Subject: RE: [Ganglia-general] Does Ganglia measure itself? > > Sure does thanks! I guess dig into the source code of the DSO modules to make >it not recognize its own cycles? Bad idea? > > Obviously, if Ganglia is using up considerable resources, one would want to >know. However, the purpose of Ganglia is to measure the performance of >everything else, Ganglia can skew this data. Ideally and naturally, one would >like to measure performance without using up any resources in doing so. >
As others already remarked - gmond is one of the most non-intrusive collectors out there. My experience is that - when used for the core metrics alone - it is not visible at all, except for very minor network usage. Cheers Martin > -----Original Message----- > From: Martin Knoblauch [mailto:[email protected]] > Sent: Tuesday, September 21, 2010 1:53 AM > To: Stevens, Weston J; [email protected] > Subject: Re: [Ganglia-general] Does Ganglia measure itself? > > Hi Weston, > > "gmond" just looks at the low-level counters provided by the OS and has no >awareness about its own resource usage. So, it will collect cpu-usage >including >its own cycles. > > Does this answer your question? > > > Cheers > Martin > ------------------------------------------------------ > Martin Knoblauch > email: k n o b i AT knobisoft DOT de > www: http://www.knobisoft.de > > > > ----- Original Message ---- > > From: "Stevens, Weston J" <[email protected]> > > To: "[email protected]" > ><[email protected]> > > Sent: Mon, September 20, 2010 8:20:21 PM > > Subject: [Ganglia-general] Does Ganglia measure itself? > > > > For instance, if gmetad and gmond are using a few percent of CPU, > >would this show up on the CPU usage graph? Or does it ignore itself and > >only count everything else? Thanks > > > > > > ---------------------------------------------------------------------- > > -------- Start uncovering the many advantages of virtual appliances > > and start using them to simplify application deployment and > > accelerate your shift to cloud computing. > > http://p.sf.net/sfu/novell-sfdev2dev > > _______________________________________________ > > Ganglia-general mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/ganglia-general > > mG > ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ Ganglia-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/ganglia-general
