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from what you pasted, you have a 32bit cpu. But you have a flag I do as |
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well, and that is 'ht'. Hyper-Threading is a whole different beast I |
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know very little about, it's more of an Intel thing for there first |
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generation dual-core cpu's. |
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|
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Uwe Thiem wrote: |
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> On Wednesday 05 March 2008, Chris Brennan wrote: |
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>> Here is the output of my cpuinfo, I'll point out where it will mean |
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>> 64bit. For the sake of this demonstration, I have only pasted one |
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>> (1) CPU. |
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>> |
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>> xaero@Leviathan ~ $ cat /proc/cpuinfo |
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>> processor : 0 |
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>> vendor_id : AuthenticAMD |
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>> cpu family : 15 |
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>> model : 75 |
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>> model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ <-- |
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>> Here will be your first indication. 64 bit processors, weather they |
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>> are SPARC, AMD or intel, must identify themselves clearly in the |
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>> model name field. |
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>> stepping : 2 |
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>> cpu MHz : 1000.000 <-- forgive this, my cpu's are idle at the |
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>> moment and speedstep droped me down for the moment. |
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>> cache size : 512 KB |
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>> physical id : 0 |
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>> siblings : 2 |
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>> core id : 0 |
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>> cpu cores : 2 <-- If you are a multi-core CPU, this will tell you |
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>> how many cores per processor. All cores are identical, so if you |
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>> have a 64-bit Dual/Quad-Core CPU, then all cores are 64bit. |
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>> fpu : yes |
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>> fpu_exception : yes |
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>> cpuid level : 1 |
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>> wp : yes |
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>> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca |
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>> cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext |
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>> fxsr_opt rdtscp lm 3dnowext 3dnow rep_good pni cx16 lahf_lm |
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>> cmp_legacy svm extapic cr8_legacy <-- you can look for flags that |
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>> may give away 64bit, such as lahf_lm, lm and nx. |
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>> bogomips : 2010.67 |
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>> TLB size : 1024 4K pages |
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>> clflush size : 64 |
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>> cache_alignment : 64 |
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>> address sizes : 40 bits physical, 48 bits virtual |
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>> power management: ts fid vid ttp tm stc |
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> |
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> I am a bit confused now. I always thought my CPU was 32bit. Here are |
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> the relevant two lines from my /proc/cpuinfo: |
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> |
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> model name : Intel(R) Pentium(R) 4 CPU 3.00GHz |
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> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge |
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> mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx |
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> lm constant_tsc pebs bts sync_rdtsc pni monitor ds_cpl cid cx16 xtpr |
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> lahf_lm |
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> |
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> So the model name does not indicate anything 64bit while the flags |
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> contain lm, nx and lahf_lm. |
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> |
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> What gives? |
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> |
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> Uwe |
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> |
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-- |
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