Which is the best choice, pae or x64?

[Karl Larsen]

On 09/25/2010 06:28 AM, Rofail Qu wrote:
> Inter Core2 Duo E8400 CPU @ 3.00GHz
>
> 2010/9/25 Christopher Chan<christopher.chan at bradbury.edu.hk>:
>    
>> Rofail Qu wrote:
>>      
>>> My PC is x86 arch and has 4GB of mem.
>>> I tried,
>>> $ cat /proc/cpuinfo |grep lm
>>> flags         : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
>>> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
>>> pebs bts pni dtes64 monitor ds_cpl cid xtpr lahf_lm
>>> flags         : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat
>>> pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe constant_tsc
>>> pebs bts pni dtes64 monitor ds_cpl cid xtpr lahf_lm
>>>
>>> So, i think it support x64 as well.
>>> The question is, which kernel should i choose? The pae or x64?
>>> Which is the best choice? Why?
>>> Thanks.
>>>
>>>        
>> What cpu are you using?
>>
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>>      
>    
         I think there might be a language problem here. Your $ cat 
/proc/cpuinfo | grep lm is odd  If you just use $ cat /proc/cpuinfo it 
does print a lot but the last page is good as shown on my computer:

model name    : AMD Athlon(tm) Processor LE-1640
stepping    : 2
cpu MHz        : 1000.000
cache size    : 512 KB
fpu        : yes
fpu_exception    : yes
cpuid level    : 1
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt 
rdtscp lm 3dnowext 3dnow up rep_good extd_apicid pni cx16 lahf_lm svm 
extapic cr8_legacy 3dnowprefetch
bogomips    : 2004.41
TLB size    : 1024 4K pages
clflush size    : 64
cache_alignment    : 64
address sizes    : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

model name    : AMD Athlon(tm) Processor LE-1640
stepping    : 2
cpu MHz        : 1000.000
cache size    : 512 KB
fpu        : yes
fpu_exception    : yes
cpuid level    : 1
wp        : yes
flags        : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca 
cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt 
rdtscp lm 3dnowext 3dnow up rep_good extd_apicid pni cx16 lahf_lm svm 
extapic cr8_legacy 3dnowprefetch
bogomips    : 2004.41
TLB size    : 1024 4K pages
clflush size    : 64
cache_alignment    : 64
address sizes    : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc 100mhzsteps

     It is clear 64 bit and I am running the 64 bit Ubuntu version 
10.04.1 now. I suggest you try what I did and see if you get about the 
same stuff. Then load 64 bit and enjoy that.

73 Karl





-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.
         Key ID = 3951B48D