cvs commit: src/test/cpuperf Makefile cpu_add.S cpu_call.S cpu_cmpadd.S cpu_cmpexg.S cpu_lcmpexg.S cputest.c src/test/sysperf blib.c blib.h

[Bosko Milekic]

On Tue, Feb 10, 2004 at 09:52:57AM -0800, Matthew Dillon wrote:
> 
> :Some data for you:
> :
> :DragonFly saturnine.emea.epson.net 1.0-CURRENT DragonFly 1.0-CURRENT #2:
> :Fri Jan 16
> :
> :CPU: Intel(R) Pentium(R) 4 CPU 1.60GHz (1594.81-MHz 686-class CPU)
> :  Origin = "GenuineIntel"  Id = 0xf12  Stepping = 2
> :  Features=0x3febfbff<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,HTT,TM>
> :
> :I find the negative values funny, is this expected?
> 
>     The machine doesn't look entirely idle.  The timing
>     tests are very, very sensitive.  The second addl
>     taking 77nS is the locked add instruction?  Obviously not
>     the 3 x addl $1,%eax, not at 77ns :-).  I've gotten negative
>     numbers from the first addl test, but I've never gotten 
>     negative numbers from the call/ret test.
>      
> 					-Matt
> 					Matthew Dillon 

   Geez.  And here I was thinking you guys had bus analyzers. :-)

-Bosko