Date: Mon, 14 Jan 2002 10:06:33 -0800 From: David Greenman <dg@root.com> To: Terry Lambert <tlambert2@mindspring.com> Cc: "James E. Housley" <jeh@FreeBSD.org>, Thomas Hurst <tom.hurst@clara.net>, arch@FreeBSD.org Subject: Re: 64 bit counters again Message-ID: <20020114100633.B8955@nexus.root.com> In-Reply-To: <3C431EE5.1CFF557B@mindspring.com>; from tlambert2@mindspring.com on Mon, Jan 14, 2002 at 10:09:41AM -0800 References: <Pine.BSF.4.41.0201132057560.62182-100000@prg.traveller.cz> <3C41F3FD.4ECC8CD@mindspring.com> <20020113231459.GA30349@voi.aagh.net> <3C42390A.F9E9F533@mindspring.com> <3C42E899.CB21BD0A@FreeBSD.org> <3C431EE5.1CFF557B@mindspring.com>
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>"James E. Housley" wrote: >> Right now I am trying to do network usage on the overflows the 32 bit >> counters in 60 120 seconds. That means the netstat values are useless, >> mrtg and other programs that poll for results every 5 minutes or so are >> useless. If I want to get good data I have to get the counts every 10 >> seconds or so to get reasonable results. > >Actually, I was thinking that if what you are counting overflowed >in such a short period of time, then you are counting the wrong >thing. > >Instead of bytes, try counting K or frames, instead of frames, >count packets, etc.. Kbytes doesn't have enough resolution to provide accurate results since the packets themselves are not integer multiples of Kbytes. >You still haven't told us exactly what counter is overflowing... He's just trying to do what every network admin is trying to do: measure link utilization (mostly bits per second) so that he can make intelligent decisions about capacity, use, and associated costs. -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com President, Download Technologies, Inc. - http://www.downloadtech.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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