Date: Tue, 18 Jul 2006 16:20:02 +0200 (CEST) From: Martin Blapp <mb@imp.ch> To: 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: <20060718161104.X36995@godot.imp.ch> In-Reply-To: <20060718140707.GG66891@bunrab.catwhisker.org> References: <20060718152306.X36995@godot.imp.ch> <20060718155642.H36995@godot.imp.ch> <20060718140707.GG66891@bunrab.catwhisker.org>
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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 ------------------------------------------------------------------
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