Can I disable HyperThreading in OS?
Andrew P.
infofarmer at gmail.com
Fri Oct 7 03:20:37 PDT 2005
On 10/7/05, hshh <hunreal at gmail.com> wrote:
> My /boot/loader.conf,
> userconfig_script_load="YES"
> kern.ipc.nmbclusters="65536"
>
> I sure there are only 2 physical processors inside the box.
> Attached dmesg infomation.
> -----------------------------------------
> Copyright (c) 1992-2005 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
> The Regents of the University of California. All rights reserved.
> FreeBSD 4.11-RELEASE-p12 #1: Fri Sep 30 17:05:26 CST 2005
> root at www.sa20.com:/usr/obj/usr/src/sys/www
> Timecounter "i8254" frequency 1193182 Hz
> CPU: Intel(R) Xeon(TM) CPU 1.80GHz (1794.19-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0xf27 Stepping = 7
>
> 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>
> Hyperthreading: 2 logical CPUs
> real memory = 2146959360 (2096640K bytes)
> avail memory = 2087632896 (2038704K bytes)
> Programming 24 pins in IOAPIC #0
> IOAPIC #0 intpin 2 -> irq 0
> Programming 24 pins in IOAPIC #1
> Programming 24 pins in IOAPIC #2
> FreeBSD/SMP: Multiprocessor motherboard: 4 CPUs
> cpu0 (BSP): apic id: 0, version: 0x00050014, at 0xfee00000
> cpu1 (AP): apic id: 1, version: 0x00050014, at 0xfee00000
> cpu2 (AP): apic id: 6, version: 0x00050014, at 0xfee00000
> cpu3 (AP): apic id: 7, version: 0x00050014, at 0xfee00000
> io0 (APIC): apic id: 2, version: 0x00178020, at 0xfec00000
> io1 (APIC): apic id: 3, version: 0x00178020, at 0xfec80000
> io2 (APIC): apic id: 4, version: 0x00178020, at 0xfec80400
> Preloaded elf kernel "kernel" at 0xc02e6000.
> ....
> SMP: AP CPU #1 Launched!
> SMP: AP CPU #3 Launched!
> SMP: AP CPU #2 Launched!
Please, cc freebsd-questions and append your answers,
don't prepend them.
Post your kernel config as well please. I have very little
experience with SMP systems, but someone from the
list would probably like to look into your problem.
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