SASADA Koichi wrote:
> Hi,
> 
> M. Edward (Ed) Borasky wrote:
>> 1. All tests run on a Pentium III Coppermine 933 MHz 512 megabytes
>> 2. OS is Gentoo Linux 2.6.17 Kernel
>> 3. Compiler is gcc-3.4.6
>>    * non-profiling compiler flags "-O2 -march-pentium3"
>>    * profiling compiler flags "-g -pg"
>>
>> Ruby version                            gprof   dim     seconds
>> ruby 1.8.5 (2006-06-22)                 no      256     200.635709
>> ruby 1.8.5 (2006-08-19)                 yes     256     617.325720
>>
>> #define OPT_SPECIALISED_INSTRUCTION  1
>> YARVCore 0.4.1 Rev: 540 (2006-08-20)    no      256     54.842272
>> YARVCore 0.4.1 Rev: 540 (2006-08-20)    yes     256     243.747870
>>
>> #define OPT_SPECIALISED_INSTRUCTION  0
>> YARVCore 0.4.1 Rev: 540 (2006-08-20)    no      256     89.597011
>> YARVCore 0.4.1 Rev: 540 (2006-08-20)    yes     256     243.750908
> 
> Good results :)
> 
> mmm.  What was the reason why first resuts were so bad?
> 
I probably did something wrong during the compile of the yarv tarball.
In any event, it looks like you want to keep

#define OPT_SPECIALISED_INSTRUCTION  1



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