Rene Herman wrote:
> Good day.
>
> Would some people on x86 (both 32 and 64) be kind enough to compile
> and run the attached program? This is about testing how long I/O port
> access to port 0x80 takes. It measures in CPU cycles so CPU speed is
> crucial in reporting.
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 6
cpu MHz : 930.347
cache size : 256 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 sep mtrr pge mca cmov pat pse36 mmx fxsr sse
bogomips : 1861.99
clflush size : 32
cycles: out 1183, in 706
cycles: out 1183, in 707
cycles: out 1182, in 706
cycles: out 1182, in 706
cycles: out 1183, in 706
cycles: out 1182, in 706
cycles: out 1182, in 706
cycles: out 1183, in 706
cycles: out 1183, in 707
cycles: out 1183, in 707
cycles: out 1183, in 706
cycles: out 1183, in 706
cycles: out 1183, in 706
cycles: out 1182, in 706
cycles: out 1183, in 707
cycles: out 1183, in 707
cycles: out 1183, in 706
cycles: out 1183, in 706
cycles: out 1182, in 706
cycles: out 1183, in 706
cycles: out 1183, in 706
cycles: out 1183, in 706
Dave.
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