Date: Mon, 7 Nov 2005 19:53:20 +0100 From: jwl@io.dk To: freebsd-questions@freebsd.org Subject: enable smp / hyperthreading Message-ID: <20051107185226.M70218@io.dk>
next in thread | raw e-mail | index | archive | help
Hi I've just installed 6.0-RELASE and am trying to get SMP to work (I have af Pentium 4 with HT). So I've compiled the kernel with 'options SMP' and according to dmesg the two CPUs are found: FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 But I'm not sure that both are enabled, because at this is at the end of dmesg and I dont see the other CPU being enabled somewhere: SMP: AP CPU #1 Launched! According to 'sysctl -a' there are 2 CPUs, but only 1 active and SMP doesnt seem to be disabled: kern.smp.cpus: 2 kern.smp.disabled: 0 kern.smp.active: 1 So I thought that it might help to but 'kern.smp.active=2' in /boot/loader.conf, but after a reboot it is back to 1 again. What am I missing here? regards, Jeppe Larsen
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20051107185226.M70218>