Date: Wed, 19 Jul 2006 11:26:19 -0400 From: Vinny Abello <vinny@tellurian.com> To: Martin Blapp <mb@imp.ch>,David Wolfskill <david@catwhisker.org> Cc: freebsd-stable@freebsd.org Subject: Re: Please confirm: top(1) cpu time broken on FreeBSD 6.1 (RELEASE/STABLE) SMP ? Message-ID: <7.0.1.0.2.20060719112609.0abfb010@tellurian.com> In-Reply-To: <20060718161104.X36995@godot.imp.ch> References: <20060718152306.X36995@godot.imp.ch> <20060718155642.H36995@godot.imp.ch> <20060718140707.GG66891@bunrab.catwhisker.org> <20060718161104.X36995@godot.imp.ch>
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Disable hyperthreading in your BIOS. At 10:20 AM 7/18/2006, Martin Blapp wrote: >Hi, > >Ok, seems to be a HTT issue on a untuned system. > >On two boxes I get with 'sysctl -a | grep smp | grep kern.smp.cpus' >kern.smp.cpus: 4 > >Here I see CPU-IDs 0 and 2 in top. No other CPUs seem to be >used. Here I get the broken CPU usage. > >And yes, seeting hyperthreading_allowed=1 corrects the top usage. > >On two other boxes where it works I get 'sysctl -a | grep smp | grep >kern.smp.cpus' kern.smp.cpus: 2 > >Here I see CPU-ID's 0 and 1 in top. Here everything works as it should. > >Martin > >Martin Blapp, <mb@imp.ch> <mbr@FreeBSD.org> >------------------------------------------------------------------ >ImproWare AG, UNIXSP & ISP, Zurlindenstrasse 29, 4133 Pratteln, CH >Phone: +41 61 826 93 00 Fax: +41 61 826 93 01 >PGP: <finger -l mbr@freebsd.org> >PGP Fingerprint: B434 53FC C87C FE7B 0A18 B84C 8686 EF22 D300 551E >------------------------------------------------------------------ > >_______________________________________________ >freebsd-stable@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-stable >To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" Vinny Abello Network Engineer Server Management vinny@tellurian.com (973)300-9211 x 125 (973)940-6125 (Direct) PGP Key Fingerprint: 3BC5 9A48 FC78 03D3 82E0 E935 5325 FBCB 0100 977A Tellurian Networks - The Ultimate Internet Connection http://www.tellurian.com (888)TELLURIAN "Courage is resistance to fear, mastery of fear - not absence of fear" -- Mark Twain
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