HTT on single CPU?
Lukas Ertl
l.ertl at univie.ac.at
Tue Jul 8 02:09:57 PDT 2003
Hi,
how do I enable Hyperthreading on a box that has just a single CPU?
From dmesg:
---8<---
CPU: Intel(R) Pentium(R) 4 CPU 2.53GHz (2523.99-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,C
MOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
Programming 24 pins in IOAPIC #0
IOAPIC #0 intpin 2 -> irq 0
FreeBSD/SMP: Multiprocessor System Detected: 1 CPUs
cpu0 (BSP): apic id: 0, version: 0x00050014, at 0xfee00000
io0 (APIC): apic id: 2, version: 0x00178020, at 0xfec00000
---8<---
smp(4) mentions machdep.hlt_logical_cpus, but:
# sysctl machdep.hlt_logical_cpus
sysctl: unknown oid 'machdep.hlt_logical_cpus'
The kernel is 5.1-CURRENT from July 4.
regards,
le
--
Lukas Ertl eMail: l.ertl at univie.ac.at
UNIX-Systemadministrator Tel.: (+43 1) 4277-14073
Zentraler Informatikdienst (ZID) Fax.: (+43 1) 4277-9140
der Universität Wien http://mailbox.univie.ac.at/~le/
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