Date: Fri, 29 Jan 2010 22:59:36 +0200 From: Mikolaj Golub <to.my.trociny@gmail.com> To: Gustau =?iso-8859-1?Q?P=E9rez?= <gperez@entel.upc.edu> Cc: freebsd-stable@freebsd.org Subject: Re: bsnmpd returns incorrect hrProcessorLoad values Message-ID: <86ljfg7hl3.fsf@kopusha.onet> In-Reply-To: <4B62C890.3020802@entel.upc.edu> ("Gustau =?iso-8859-1?Q?P=E9?= =?iso-8859-1?Q?rez=22's?= message of "Fri\, 29 Jan 2010 12\:37\:52 %2B0100") References: <4B62C890.3020802@entel.upc.edu>
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On Fri, 29 Jan 2010 12:37:52 +0100 Gustau P=E9rez wrote: > Hi, > > I'm using cacti to monitor some servers running FBSD. I was using 7.2 > with SCHED_4BSD. With this configuration : bsnmpd+bsnmp-ucd was > returning right values for the cores' load. > > I recently updated the servers (via csup) to RELENG_8 and bsnmpd is > returning negative values for the cores' load. If I try something like > in a 4-core system : > > snmpwalk -v 2c -c community server .1.3.6.1.2.1.25.3.3.1 > > what I get is : > > .1.3.6.1.2.1.25.3.3.1.1.6 =3D OID: .0.0 > .1.3.6.1.2.1.25.3.3.1.1.10 =3D OID: .0.0 > .1.3.6.1.2.1.25.3.3.1.1.14 =3D OID: .0.0 > .1.3.6.1.2.1.25.3.3.1.1.18 =3D OID: .0.0 > .1.3.6.1.2.1.25.3.3.1.2.6 =3D INTEGER: -182 > .1.3.6.1.2.1.25.3.3.1.2.10 =3D INTEGER: -182 > .1.3.6.1.2.1.25.3.3.1.2.14 =3D INTEGER: -182 > .1.3.6.1.2.1.25.3.3.1.2.18 =3D INTEGER: -182 > > I tried and old bsnmpd-ucd (0.2.1, works fine in a 7,2 system) with a > 8.0 system. Same wrong results. And it seems bsnmpd in /usr/src/contrib > has not changed between 7.2 and 8.0. > > Any ideas ? I'm not an expert, but with tcpdump I see different > results. Against an old 7.2 system, the field related to each core load > gives the right value. Instead, against and 8.0 system, those field show > (in hex) values like fd 4b. What I don't know is how bsdnmp-ucb retrives > those values and how it construct the udp response packet. bsnmpd-ucd has nothing to do with HOST-RESOURCES-MIB. These mibs are provid= ed by snmp_hostres(3) module (/usr/lib/snmp_hostres.so). So something wrong is there (I suppose it is not in sync with some recent changes in kernel or libkvm). --=20 Mikolaj Golub
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