Optimizing Mesa Performance With Compiler Flags

[ncopa]

my friend please provide a bench or too to back that claim up.

Use the link in my post. (click on "known").

[Lockal]

I guess the bottleneck of most videogames is not OpenGL, unless the game is designed for high-end graphics card. Check this with any profiler: gl... calls are almost unnoticeable amoung game physics and logic. Compiling the actual software and main libraries instead of driver could give a very different result.

[ryszardzonk]

I would be very interested in how the -O1, -O2, -O3 compares to -Os (optimize for size). When code is smaller you get fewer cache misses which leads to faster execution. Ruby is known to run faster with -Os.

my friend please provide a bench or too to back that claim up. I have found no tests for ruby using -0s. I would welcome a link for those tests.
PS In that search I found the "Falcon patch" which regardless of the flags made ruby much faster

[ncopa]

I would be very interested in how the -O1, -O2, -O3 compares to -Os (optimize for size). When code is smaller you get fewer cache misses which leads to faster execution. Ruby is known to run faster with -Os.

[phoronix]

Phoronix: Optimizing Mesa Performance With Compiler Flags

Compiler tuning can lead to performance improvements for many computational benchmarks by toying with the CFLAGS/CXXFLAGS, but is there much gain out of optimizing your Mesa build? Here's some benchmark results...

http://www.phoronix.com/vr.php?view=MTI4NTY