Re: Intel P6 vs P7 system call performance

From: Richard B. Johnson (root@chaos.analogic.com)
Date: Wed Dec 18 2002 - 15:25:10 EST

The number of CPU clocks necessary to make the 'far' or
full-pointer call by pushing the segment register, the offset,
then issuing a 'lret' is 33 clocks on a Pentium II.
 
longcall clocks = 46
call clocks = 13
actual full-pointer call clocks = 33

processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 5
model name : Pentium II (Deschutes)
stepping : 1
cpu MHz : 399.573
cache size : 512 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
bogomips : 797.90

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 5
model name : Pentium II (Deschutes)
stepping : 1
cpu MHz : 399.573
cache size : 512 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
bogomips : 797.90

Cheers,
Dick Johnson
Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips).
Why is the government concerned about the lunatic fringe? Think about it.


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This archive was generated by hypermail 2b29 : Mon Dec 23 2002 - 22:00:20 EST