Thiago Guzella kirjoitti viestissään (lähetysaika perjantai, 21. tammikuuta 2005 04:01): > Well, /proc/cpuinfo reports the HT feature flag as active, so > this is a HT capable cpu. No, the HT flag does _not_ indicate an actually HyperThreading capable CPU. My non-HyperThreaded P4 shows the HT flag: $ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.40GHz stepping : 4 cpu MHz : 2410.358 cache size : 512 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov patpse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm bogomips : 4784.12 If you really want to know if a P4 is HT capable, boot with a SMP kernel and see if it detects two CPUs. -- Markku Kolkka markku.kolkka@xxxxxx
