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commented
9 years ago Running perf shows its spending too much time filtering the rows.
Events: 9K cycles
79.39% libyuv_unittest libyuv_unittest [.] ARGBInterpolateRow_SSSE3
9.94% libyuv_unittest libyuv_unittest [.] ScaleARGBFilterCols_SSSE3
5.44% libyuv_unittest libyuv_unittest [.] ScaleARGBCols_SSE2
1.37% libyuv_unittest libyuv_unittest [.] ScaleARGBBilinearDown
1.19% libyuv_unittest libyuv_unittest [.] ScaleARGB
1.03% libyuv_unittest libc-2.15.so [.] getenv
0.79% libyuv_unittest libc-2.15.so [.] __strncmp_sse2
0.19% libyuv_unittest libyuv_unittest [.] ARGBScaleClip
0.18% libyuv_unittest libc-2.15.so [.] __random_r
0.17% libyuv_unittest libyuv_unittest [.] libyuv::ARGBClipTestFilter(int, int, int, int, libyuv::FilterMode, int)
0.07% libyuv_unittest libc-2.15.so [.] __random
0.06% libyuv_unittest [kernel.kallsyms] [k] 0xffffffff8103b51a
0.06% libyuv_unittest libc-2.15.so [.] __memset_sse2
0.04% libyuv_unittest libc-2.15.so [.] __strlen_sse2
0.03% libyuv_unittest libyuv_unittest [.] ScaleARGBFilterCols_C
0.02% libyuv_unittest libyuv_unittest [.] libyuv::ARGBTestFilter(int, int, int, int, libyuv::FilterMode, int)
0.02% libyuv_unittest ld-2.15.so [.] _dl_relocate_object
0.01% libyuv_unittest libyuv_unittest [.] random@plt
0.01% libyuv_unittest libyuv_unittest [.] ARGBScale
Original intent was to clip the source region
On Windows, before:
d:\src\libyuv2\trunk>out\release\libyuv_unittest
--gtest_filter=*ARGBScale*DownBy34_Bilinear | sed "s/\(.*(\)\([0-9]*\)\(
ms)\)/\2 - \1\2\3/
g" | c:\cygwin\bin\sort -rn | grep ms
11842 - [ OK ] libyuvTest.ARGBScaleClipDownBy34_Bilinear (11842 ms)
726 - [ OK ] libyuvTest.ARGBScaleDownBy34_Bilinear (726 ms)
[==========] 2 tests from 1 test case ran. (12568 ms total)
[----------] 2 tests from libyuvTest (12568 ms total)
After
d:\src\libyuv\trunk>out\release\libyuv_unittest
--gtest_filter=*ARGBScale*DownBy34_Bilinear | sed "s/\(.*(\)\([0-9]*\)\(
ms)\)/\2 - \1\2\3/g
" | c:\cygwin\bin\sort -rn | grep ms
5293 - [ FAILED ] libyuvTest.ARGBScaleClipDownBy34_Bilinear (5293 ms)
794 - [ OK ] libyuvTest.ARGBScaleDownBy34_Bilinear (794 ms)
[==========] 2 tests from 1 test case ran. (6087 ms total)
Bug causing failure needs to be resolved. 2x faster, but still slow.Original comment by fbarch...@chromium.org on 17 May 2013 at 3:52
Original issue reported on code.google.com by
fbarch...@google.comon 16 May 2013 at 8:00