2 Commits

Author	SHA1	Message	Date
Siarhei Siamashka	b31a696263	test: Switch to the new PRNG instead of old LCG ... Wallclock time for running pixman "make check" (compile time not included): ----------------------------+----------------+-----------------------------+ | old PRNG (LCG) | new PRNG (Bob Jenkins) | Processor type +----------------+------------+----------------+ | gcc 4.5 | gcc 4.5 | gcc 4.7 (simd) | ----------------------------+----------------+------------+----------------+ quad Intel Core i7 @2.8GHz | 0m49.494s | 0m43.722s | 0m37.560s | dual ARM Cortex-A15 @1.7GHz | 5m8.465s | 4m37.375s | 3m45.819s | IBM Cell PPU @3.2GHz | 23m0.821s | 20m38.316s | 16m37.513s | ----------------------------+----------------+------------+----------------+ But some tests got a particularly large boost. For example benchmarking and profiling blitters-test on Core i7: === before === $ time ./blitters-test real 0m10.907s user 0m55.650s sys 0m0.000s 70.45% blitters-test blitters-test [.] create_random_image 15.81% blitters-test blitters-test [.] compute_crc32_for_image_internal 2.26% blitters-test blitters-test [.] _pixman_implementation_lookup_composite 1.07% blitters-test libc-2.15.so [.] _int_free 0.89% blitters-test libc-2.15.so [.] malloc_consolidate 0.87% blitters-test libc-2.15.so [.] _int_malloc 0.75% blitters-test blitters-test [.] combine_conjoint_general_u 0.61% blitters-test blitters-test [.] combine_disjoint_general_u 0.40% blitters-test blitters-test [.] test_composite 0.31% blitters-test libc-2.15.so [.] _int_memalign 0.31% blitters-test blitters-test [.] _pixman_bits_image_setup_accessors 0.28% blitters-test libc-2.15.so [.] malloc === after === $ time ./blitters-test real 0m3.655s user 0m20.550s sys 0m0.000s 41.77% blitters-test.n blitters-test.new [.] compute_crc32_for_image_internal 15.77% blitters-test.n blitters-test.new [.] prng_randmemset_r 6.15% blitters-test.n blitters-test.new [.] _pixman_implementation_lookup_composite 3.09% blitters-test.n libc-2.15.so [.] _int_free 2.68% blitters-test.n libc-2.15.so [.] malloc_consolidate 2.39% blitters-test.n libc-2.15.so [.] _int_malloc 2.27% blitters-test.n blitters-test.new [.] create_random_image 2.22% blitters-test.n blitters-test.new [.] combine_conjoint_general_u 1.52% blitters-test.n blitters-test.new [.] combine_disjoint_general_u 1.40% blitters-test.n blitters-test.new [.] test_composite 1.02% blitters-test.n blitters-test.new [.] prng_srand_r 1.00% blitters-test.n blitters-test.new [.] _pixman_image_validate 0.96% blitters-test.n blitters-test.new [.] _pixman_bits_image_setup_accessors 0.90% blitters-test.n libc-2.15.so [.] malloc	2012-12-06 17:20:35 +02:00
Søren Sandmann Pedersen	9fe7d32c4b	Add alpha-loop test program ... This tests what happens if you attempt to make an image with an alpha map that has the image as its alpha map. This results in an infinite loop in _pixman_image_validate(), so the test sets up a SIGALRM to exit if it runs for more than five seconds.	2010-08-15 21:57:18 -04:00