Dotaz: QEMU a rôzne verzie virtuálnych CPU (ktorý?)

[Peter]

Prajem pekný deň osadenstvu

Inštalujem qemu-kvm na jeden HP ProLiant (voľajaké Xeon-y) a príkaz "qemu-kvm -cpu ?model" mi vyhodí toto:

x86       Opteron_G3  AMD Opteron 23xx (Gen 3 Class Opteron)          
x86       Opteron_G2  AMD Opteron 22xx (Gen 2 Class Opteron)          
x86       Opteron_G1  AMD Opteron 240 (Gen 1 Class Opteron)           
x86          Nehalem  Intel Core i7 9xx (Nehalem Class Core i7)       
x86           Penryn  Intel Core 2 Duo P9xxx (Penryn Class Core 2)    
x86           Conroe  Intel Celeron_4x0 (Conroe/Merom Class Core 2)   
x86      cpu64-rhel5  QEMU Virtual CPU version (cpu64-rhel5)          
x86      cpu64-rhel6  QEMU Virtual CPU version (cpu64-rhel6)          
x86           [n270]  Intel(R) Atom(TM) CPU N270   @ 1.60GHz          
x86         [athlon]  QEMU Virtual CPU version 0.12.1                 
x86       [pentium3]                                                  
x86       [pentium2]                                                  
x86        [pentium]                                                  
x86            [486]                                                  
x86        [coreduo]  Genuine Intel(R) CPU           T2600  @ 2.16GHz 
x86         [qemu32]  QEMU Virtual CPU version 0.12.1                 
x86          [kvm64]  Common KVM processor                            
x86       [core2duo]  Intel(R) Core(TM)2 Duo CPU     T7700  @ 2.40GHz 
x86         [phenom]  AMD Phenom(tm) 9550 Quad-Core Processor         
x86         [qemu64]  QEMU Virtual CPU version 0.12.1

A ja teraz absolútne netuším, že čo vybrať. Je to jedno? Alebo samotný beh hosťa od toho závisí?

Vopred ďakujem za konštruktívne rady.

Odpovědi

[blackman]

Vyber samozrejme typ CPU podla toho ake mas na fyzickom hostovi, cize si zisti ake XEONy su to, ktora generacia.

[Peter]

Je to 4-jadrový Xeon:

cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 26
model name      : Intel(R) Xeon(R) CPU           E5506  @ 2.13GHz
stepping        : 5
cpu MHz         : 2132.788
cache size      : 4096 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 11
wp              : yes
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 syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 popcnt lahf_lm tpr_shadow vnmi flexpriority ept vpid
bogomips        : 4265.57
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management:

[pepino]

V tom případě je to jasné.

[Peter]

Jasné pre teba? Alebo ani pre teba nie? Tak pre koho vlastne?

[pa3k]

Nehalem