Date: Tue, 21 Nov 2006 06:40:05 -0600 From: Kirk Strauser <kirk@strauser.com> To: freebsd-questions@freebsd.org Subject: Disabled HTT in the kernel but not the BIOS? Message-ID: <200611210640.09814.kirk@strauser.com>
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[-- Attachment #1 --] I have a dual Xeon/HTT server that I run with machdep.hyperthreading_allowed set to 0. At boot, it detects 4 CPUs: FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7 but top confirms that only processors 0 and 2 are actually running. So, other than top being unwilling to report more than 50% CPU load, are there any other problems with running like this, such as the cache being split for the benefit of the HTT that I'm not enabling? I can live with the cosmetic glitch, but don't want to take a pointless performance hit. -- Kirk Strauser [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQBFYvOp5sRg+Y0CpvERAt+wAJ0euFNFnFVgKALMpGZoxf2MUGv5awCgjvtM F00MYEPjueVrdBAUbrNv4w8= =2cQO -----END PGP SIGNATURE-----
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