Date: Wed, 21 May 2008 09:11:52 +0700 From: Stanislav A Svirid <s.svirid@sibset-team.ru> To: freebsd-current@freebsd.org Subject: Re: bsnmpd hrProcessorLoad results incorrect on FreeBSD 7 or 8? Message-ID: <20080521021152.GA24273@unknown.211.ru> In-Reply-To: <4832216F.9030606@jellydonut.org> References: <4820FE0F.9050808@jellydonut.org> <200805070149.m471nToM073813@lava.sentex.ca> <482121B1.7080901@jellydonut.org> <20080507085035.L9490@beagle.kn.op.dlr.de> <20080507103247.GA84958@unknown.211.ru> <4832216F.9030606@jellydonut.org>
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On Mon, 19 May 2008, Michael Proto wrote: > Stanislav A Svirid wrote: >> On Wed 07 May, 2008, Harti Brandt wrote: >> >>> On Tue, 6 May 2008, Michael Proto wrote: >>> >>> MP>Mike Tancsa wrote: >>> MP>> At 08:55 PM 5/6/2008, Michael Proto wrote: >>> MP>> > Is anyone seeing problems with bsnmpd reporting an incorrect >>> MP>> > HOST-RESOURCES-MIB::hrProcessorLoad value under HEAD? I'm using the >>> MP>> > default /etc/snmpd.config settings and am loading the >>> MP>> > /usr/lib/snmp_hostres.so library just as I do in 6.3, but the value for >>> MP>> > this MIB always reports CPU utilization at 100% regardless of the actual >>> MP>> > load on the system. 6.3 and 6-STABLE both work correctly and report the >>> MP>> > actual CPU utilization when queried. >>> MP>> >>> MP>> IIRC, I noticed this when I changed to ULE from 4BSD_SCHED. >>> MP>> >>> MP>> ---Mike >>> MP>> _______________________________________________ >>> MP>> freebsd-current@freebsd.org mailing list >>> MP>> http://lists.freebsd.org/mailman/listinfo/freebsd-current >>> MP>> To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >>> MP> >>> MP>Would match my environment as well, as I'm using ULE on all of the >>> MP>affected systems. Just built a 4BSD kernel on my HEAD system and >>> MP>HOST-RESOURCES-MIB::hrProcessorLoad reports a correct value again. >>> MP> >>> MP>Anyone have an idea on a fix? >>> >>> If anybody has a fix that works with both schedulers, I happily commit >>> this. >> >> Here you are :) >> >> --- hostres_processor_tbl.c.old 2008-05-07 17:23:47.000000000 +0700 >> +++ hostres_processor_tbl.c 2008-05-07 17:23:54.000000000 +0700 >> @@ -120,7 +120,7 @@ static double >> processor_getpcpu(struct kinfo_proc *ki_p) >> { >> >> - if (ccpu == 0 || fscale == 0) >> + if (fscale == 0) >> return (0.0); >> >> #define fxtofl(fixpt) ((double)(fixpt) / fscale) >> > > > This worked (sorta). On my PCEngines ALIX platform CPU utilization on > HEAD dropped down to 0-2% from a constant 100%. It looks slightly > incorrect though, as there is 3-4% interrupt load at all times on that > system (as per top and vmstat). Still a much better representation than > before though. This patch just fix "Stolen from /usr/src/bin/ps/print.c" :) In ULE ccpu is 0. -- Stanislav Svirid > Siberian Networks, Novosibirsk, Russia > SAS-RIPE, 3909675@ICQ
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