Re: [gentoo-user] Recommendation for CPU type in QEMU?

["Walter Dnes" <waltdnes@waltdnes.org>]

On Wed, Jul 31, 2013 at 11:45:48AM +0100, Kerin Millar wrote

> Please provide the content of /proc/cpuinfo on the host.

  The first one is my shiney almost new desktop (Dell Inspiron 660) and
the second one is my "hot backup" (more like emergency backup, 6-year-old
Dell Dimension 530).  I'll be on the new machine unless it breaks.  But
I do want to be able to port the QEMU VM to the older machine as part of
its "hot backup" status.

  On any other distro, it wouldn't matter, but I have "-march=native" in
make.conf, so I do have to worry about keeping binaries compatable.  If
I build for "Intel Core 2 Duo CPU E4600" on both machines, would I be
losing noticable performance?  Right now, it's just one Windows program
that I'll be running occasionally.  So I'd rather trade off a bit less
speed on the new machine, versus compatability issues.  I also prefer to
be able to scp the VM disk images to the backup machine, rather than
having to do a separate install on each machine.

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 58
model name      : Intel(R) Core(TM) i5-3330 CPU @ 3.00GHz
stepping        : 9
microcode       : 0x15
cpu MHz         : 2993.981
cache size      : 6144 KB
physical id     : 0
siblings        : 4
core id         : 0
cpu cores       : 4
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 13
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep 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 nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms
bogomips        : 5987.96
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 Duo CPU     E4600  @ 2.40GHz
stepping        : 13
microcode       : 0xa1
cpu MHz         : 2400.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx lm constant_tsc arch_perfmon pebs bts aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3 cx16 xtpr pdcm lahf_lm dtherm
bogomips        : 4788.45
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

-- 
Walter Dnes <waltdnes@waltdnes.org>
I don't run "desktop environments"; I run useful applications