Date: Fri, 20 May 2005 09:02:45 +0300 From: "Donatas" <donatas@lrtc.net> To: "Gleb Smirnoff" <glebius@FreeBSD.org> Cc: freebsd-net@freebsd.org Subject: Re: ng_bridge fluctuations Message-ID: <006101c55d01$8b08fe20$9f90a8c0@DONATAS> References: <131b01c55b9a$5fb58530$9f90a8c0@DONATAS> <20050518112720.GA6678@cell.sick.ru>
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> Donatas, >=20 > On Wed, May 18, 2005 at 02:11:43PM +0300, Donatas wrote: > D> D> ### Regular MRTG monitoring=20 > D> D> 0,10,20,30,40,50 * * * * root /usr/local/etc/mrtg/exec_mrtg.sh > = /dev/null 2>&1=20 > D> >No-no. The question was: what is the scale of time axis? How long = does one=20 > D> >peak last?=20 > D> hmm...still difficult to understand your question. well, time axis = scale is displayed in hours. each new point is added every 10 minutes. = each point value is read immediately > D> by mrtg without any averages or somth. >=20 > So, there is 24 hours between red lines on the image [1]? Then we have = 2 peaks > per hour, right? May be this is sendmail (or other MTA) processing its = queue? >=20 > [1] ftp://temp:temp@217.9.241.242/hatm0.png your idea seems logical enough....just can't understand why peaks have = never been detected on incoming interfaces, before ng_bridge? mrtg = doesn't allways reads current values with precission of seconds....for = example=20 point 1 - 00:00:15, point 2 - 00:10:37, point 3 - 00:20:24 etc... you might say that incoming traffic on ethernet interfaces is much = bigger that incoming traffic bridged to current ngethxxx and it simply = swallows peaks, but we've done experiments with only one physical and = one logical bridged interfaces - fluctuations have also been noticed. anyway, maybe you have any ideas why after doing "ngctl msg ng_bridge: = setconfig '{ ipfw=3D[1] }', and getconfig showing succesful activation = of "ipfw =3D [ 1 ]", traffic is not passed to ipfw? bsd 5.3... thanks...
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