Hello, I'm running FreeBSD 7.2-RELEASE on a dual-core Xeon. It has a custom compiled SMP kernel, ACPI enabled, with the ULE scheduler.
I've been looking into HyperThreading, and I've come to the conclusion that I should not use it. I've been told that HTT is disabled by default, however sysctl and dmesg seems to contradict that: CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2395.93-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf29 Stepping = 9 Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> Features2=0x4400<CNXT-ID,xTPR> Logical CPUs per core: 2 FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs cpu0 (BSP): APIC ID: 0 cpu1 (AP/HT): APIC ID: 1 cpu2 (AP): APIC ID: 2 cpu3 (AP/HT): APIC ID: 3 cpu0: <ACPI CPU> on acpi0 cpu1: <ACPI CPU> on acpi0 cpu2: <ACPI CPU> on acpi0 cpu3: <ACPI CPU> on acpi0 SMP: AP CPU #2 Launched! SMP: AP CPU #3 Launched! SMP: AP CPU #1 Launched! machdep.hyperthreading_allowed: 1 hw.ncpu: 4 kern.smp.disabled: 0 kern.smp.active: 1 Am I correct to assume that the above means that HTT is enabled? There is nothing in my loader.conf, sysctl.conf, or kernel config file related to hyperthreading. Thanks. _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions-unsubscr...@freebsd.org"