Date: Mon, 1 Feb 2010 17:25:45 +0000 From: "Hoang V.D. | Creative Solutions GmbH" <hoang.v.d@creativesolutions.at> To: "freebsd-hardware@freebsd.org" <freebsd-hardware@freebsd.org> Cc: Ivan Voras <ivoras@freebsd.org> Subject: RE: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores available Message-ID: <65BCAB515656D34AA48B0E713966CC8305F832@MBX021-E2-NJ-5.exch021.domain.local> In-Reply-To: <201002011150.31782.jhb@freebsd.org> References: <65BCAB515656D34AA48B0E713966CC83046A64@MBX021-E2-NJ-5.exch021.domain.local> <201002010932.20443.jhb@freebsd.org> <65BCAB515656D34AA48B0E713966CC8305F775@MBX021-E2-NJ-5.exch021.domain.local> <201002011150.31782.jhb@freebsd.org>
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I would like to thanks both of you John and Ivan for your assistance. We th= ink=20 we have found out the cause of the problem now, this thread from Dell's "Li= nux=20 PowerEdge" list probably explained it: http://lists.us.dell.com/pipermail/linux-poweredge/2010-January/041159.html For some weird reason Dell decided to turn off two cores per CPU by default= (not HT but real cores) for those servers. We will ask the datacenter guys to lo= ok at that specific BIOS option tomorrow and fix it. Again, many thanks from happy FreeBSD users :-) Best regards, Hoang > -----Original Message----- > From: John Baldwin [mailto:jhb@freebsd.org] > Sent: Monday, February 01, 2010 5:51 PM > To: Hoang V.D. | Creative Solutions GmbH > Cc: freebsd-hardware@freebsd.org > Subject: Re: FreeBSD 8.0, Intel Xeon E5530, Dell R410, only 2 cores avail= able >=20 > Yes, they are disabled in both the APIC and SRAT (NUMA info) tables. CPU= s > here mean SMT threads. Effectively each logical CPU that is visible to t= he > OS should be listed in the ACPI APIC table. >=20 > Grr, it looks like cpuid hasn't been updated to parse the cpuid bits that > tell you how many threads and cores there are for a single package, but I > suspect it would tell you the same thing that FreeBSD is claiming. What = does > your BIOS say about the number of cores in your CPU? >=20 > -- > John Baldwin
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