Date: Sat, 30 Oct 2004 16:32:17 +0200 From: Ewald Jenisch <a@jenisch.at> To: freebsd-questions@freebsd.org Subject: SMP with hyperthreading CPU (5.3)? Message-ID: <20041030143217.GA9742@athena.oekb.co.at>
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Hi, I've got a 3GHz P4 system with hyperthreading enabled in the BIOS. For this system I've built a SMP-kernel (kernel config-file "SMP" that comes with 5.3). However SMP doesn't seem to be enabled - at least I don't seen the usual messages like "CPU ... launched" that's common with SMP configurations. The only thing I'm seeing are the following entries during boot: CPU: Intel(R) Pentium(R) 4 CPU 3.00GHz (2992.71-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0xf34 Stepping = 4 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> Hyperthreading: 2 logical CPUs Neither does "top" show anything about a second (logical) cpu being active, nor does ps. So do I have two logical CPUs active on this system? If not - what should I do besides enabling "SMP" in the kernel config file (sure enough "cpu I386_CPU" which effectively disables SMP is commented out) Thanks much in advance for any hints, -ewald
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