Re: Intel P6 vs P7 system call performance

[Margit Schubert-While]

Well, in the 2.4.x kernels, the P4 gets compiled as a I686 with NO special
treatment :-) (Not even prefetch, because of an ifdef bug)
The P3 at least gets one level of prefetch and the AMD's get special compile
options(arch=k6,athlon), full prefetch and SSE.

 >From Mike Hayward
 >Dual Pentium 4 Xeon 2.4Ghz 2.4.19 kernel 33661.9 lps (10 secs, 6 samples)

Hmm, P4 2.4Ghz , also gcc -O3 -march=i686

margit:/disk03/bytebench-3.1/src # ./hanoi 10
576264 loops
margit:/disk03/bytebench-3.1/src # ./hanoi 10
571001 loops
margit:/disk03/bytebench-3.1/src # ./hanoi 10
571133 loops
margit:/disk03/bytebench-3.1/src # ./hanoi 10
570517 loops
margit:/disk03/bytebench-3.1/src # ./hanoi 10
571019 loops
margit:/disk03/bytebench-3.1/src # ./hanoi 10
582688 loops

Margit