[2.4] [2.5] [i386] Add support for GCC 3.1
Quoted 2 lines
Quoted 2 lines
Adding
CONFIG_XF86_USE_3DNOW=y
seems to help a little too.
Mmm, maybe not.
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Make sure you benchmark FPU intensive use when testing
USE_3DNOW. I've seen several situations where it looks marginally better until you actually measure two things - memory bandwidth available to user programs, and also FPU performance, especially of FPU heavy apps that schedule a lot (eg Quake)
Thanks for helping me narrow the search. On an allocate and write to pages of memory test, USE_3DNOW increased test time by 15% (which is bad) on k6-2.
Both kernels compiled with gcc-3.1.0 -march=k6-2.
mtest01 -w 50 executed 100 times
CONFIG_X86_USE_3DNOW=n 745 secondsCONFIG_X86_USE_3DNOW=y 860 seconds
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Randy Hron