How can I disable hyperthreads, but NOT smp ?

2011-09-20 Thread Jason Usher
FreeBSD 6.4-RELEASE system with two physical CPUs, each of which are HT capable. From dmesg: cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7 I also see this: machdep.hyperthreading_allowed: 0 The problem is, I have reason to believe that my workload

Re: How can I disable hyperthreads, but NOT smp ?

2011-09-20 Thread Richard Collyer
On 20/09/2011 21:34, Jason Usher wrote: FreeBSD 6.4-RELEASE system with two physical CPUs, each of which are HT capable. From dmesg: cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7 I also see this: machdep.hyperthreading_allowed: 0 The problem is, I

Re: How can I disable hyperthreads, but NOT smp ?

2011-09-20 Thread RW
On Tue, 20 Sep 2011 22:28:18 +0100 Richard Collyer wrote: On 20/09/2011 21:34, Jason Usher wrote: FreeBSD 6.4-RELEASE system with two physical CPUs, each of which are HT capable. From dmesg: cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7

Re: How can I disable hyperthreads, but NOT smp ?

2011-09-20 Thread b. f.
On 20/09/2011 21:34, Jason Usher wrote: FreeBSD 6.4-RELEASE system with two physical CPUs, each of which are HT capable. From dmesg: cpu0 (BSP): APIC ID: 0 cpu1 (AP): APIC ID: 1 cpu2 (AP): APIC ID: 6 cpu3 (AP): APIC ID: 7 I also see this: machdep.hyperthreading_allowed: 0