[Bug 271798] multimedia/ffmpeg: Enable LTO by default on aarch64 and amd64
Date: Wed, 25 Sep 2024 17:40:33 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271798
Olivier Cochard <olivier@freebsd.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |olivier@freebsd.org
--- Comment #4 from Olivier Cochard <olivier@freebsd.org> ---
(In reply to Daniel Engberg from comment #3)
Interpreting some result with ministat, because raw result aren’t easy to read.
All units here are utime in second.
ministat -w 74 -s plain.Decode.MPEG-2.bwdif lto.Decode.MPEG-2.bwdif
x plain.Decode.MPEG-2.bwdif
+ lto.Decode.MPEG-2.bwdif
+--------------------------------------------------------------------------+
| + + + x x x |
| |________A_M_______||
||____________M_A_______________| |
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 1032.744 1035.13 1034.172 1034.0153 1.2006904
+ 3 1026.165 1030.029 1027.714 1027.9693 1.9446132
Difference at 95.0% confidence
-6.046 +/- 3.66291
-0.584711% +/- 0.353671%
(Student's t, pooled s = 1.61604)
ministat -w 74 -s plain.Decode.MPEG-4 lto.Decode.MPEG-4
x plain.Decode.MPEG-4
+ lto.Decode.MPEG-4
+--------------------------------------------------------------------------+
| + + + x x x|
| |___________M____A_______________| |
||______M_A________| |
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 13.248 13.377 13.286 13.303667 0.066289768
+ 3 13.09 13.161 13.116 13.122333 0.03592121
Difference at 95.0% confidence
-0.181333 +/- 0.12084
-1.36303% +/- 0.898767%
(Student's t, pooled s = 0.0533135)
ministat -w 74 -s plain.Decode.H264 lto.Decode.H264
x plain.Decode.H264
+ lto.Decode.H264
+--------------------------------------------------------------------------+
|+ x + x + x|
| |____________________M_______A_____________________________| |
||_____________________A_____________________| |
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 844.163 850.07 845.918 846.717 3.0334738
+ 3 842.61 847.122 844.833 844.855 2.2560805
No difference proven at 95.0% confidence
ministat -w 74 -s plain.Decode.HEVC lto.Decode.HEVC
x plain.Decode.HEVC
+ lto.Decode.HEVC
+--------------------------------------------------------------------------+
|+ + + x x x |
| |_______AM______||
||_________MA__________| |
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 1157.997 1159.971 1159.178 1159.0487 0.99333496
+ 3 1150.939 1153.633 1152.164 1152.2453 1.3488404
Difference at 95.0% confidence
-6.80333 +/- 2.68478
-0.586976% +/- 0.23116%
(Student's t, pooled s = 1.1845)
inistat -w 74 -s plain.audio.ReplayGain lto.audio.ReplayGain
x plain.audio.ReplayGain
+ lto.audio.ReplayGain
+--------------------------------------------------------------------------+
|+ x x x + + |
| |_____________A__M__________| |
| |_________________________________A_____________M___________________||
+--------------------------------------------------------------------------+
N Min Max Median Avg Stddev
x 3 5.295 5.442 5.393 5.3766667 0.074848736
+ 3 5.222 5.558 5.504 5.428 0.18043281
So, yes: ship it!
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