AV1 Multi-Threaded Decoding on Mobile SOCs 2020-May-19 (final)

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R
1	AV1 Decoder Comparison - 1080p
2		CC BY 4.0					Author	Nathan Egge		dav1d speed-up	big	LITTLE	Both					Previous Studies
3							Affiliation	Mozilla / Xiph.Org		8-bit	1.70x	2.26x	1.98x					AV1 Decoder Comparison 2020-May-10 (final)
4										10-bit	5.40x	4.34x	4.70x					AV1 Decoder Comparison 2019-Oct-7 (final)
5	Software Decoders
6		libgav1	b998b0a	2020-Apr-29
7		dav1d-0.7.0	dd1ed29	2020-May-19
8
9	Source Material
10		Resolution	1920x1080 4:2:0 @ 23.98 FPS
11		8-bit @ 6736kbps	http://dgql.org/~nathan/chimera-8b-1080p.ivf
12		10-bit @ 6191kbps	http://dgql.org/~nathan/chimera-10b-1080p.ivf
13		Skip	120
14		Limit	5000
15
16	CPU Configurations
17		big	taskset on just high power cores
18		LITTLE	taskset on just low power cores
19		Both	no taskset (all cores)
20
21	Thread Configurations
22		libgav1		dav1d
23		Threads	Frame Parallel	Frame Threads	Tile Threads
24		1	No	1	1
25		2	Yes	1	2
26		4	Yes	2	2
27		6	Yes	3	2
28		8	Yes	4	2
29		12	Yes	6	2
30		16	Yes	8	2
31
32
33	Results (max FPS over thread configuration)
34			Google Pixel 1 XL (2016) - Snapdragon 821			Google Pixel 2 (2017) - Snapdragon 835			Google Pixel 3 (2018) - Snapdragon 845			Xiaomi Mi 9T Pro (2019) - Snapdragon 855			ODROID-N2 (2019) - Amlogic S922X
35			(2x) 2.15 GHz (2x) 1.6 GHz			(4x) 2.35 GHz (4x) 1.9 GHz			(4x) 2.35 GHz (4x) 1.9 GHz			(1x) 2.84 GHz (3x) 2.42 GHz (4x) 1.78 GHz			(4x) 1.8 GHz A73 (2x) 1.9 GHz A53
36			big	LITTLE	Both	big	LITTLE	Both	big	LITTLE	Both	big	LITTLE	Both	big	LITTLE	Both
37		8-bit dav1d	33.831	28.071	54.050	81.094	40.185	87.020	102.799	39.927	98.147	72.790	38.482	73.925	66.729	20.503	73.659
38		10-bit dav1d	28.479	20.800	43.628	53.733	26.700	56.184	69.917	24.675	60.559	79.369	22.560	44.018	43.298	13.409	43.628
39		8-bit libgav1	20.573	15.209	23.660	43.244	16.259	35.984	54.539	15.118	55.516	67.322	16.047	61.873	32.932	10.653	32.977
40		10-bit libgav1	6.778	5.455	8.386	9.842	4.888	9.575	10.851	4.777	11.713	15.835	4.646	14.044	7.371	5.575	10.529
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42
43	Goolge Pixel 1 XL
44		Released	Oct 2016
45		CPU	Snapdragon 821
46		Chipset	MSM8996
47		Cores	4
48		big	(2x) 2.15 GHz
49		LITTLE	(2x) 1.6 GHz
50		Memory	4 GB
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82
83	Google Pixel 2
84		Released	Oct 2017
85		CPU	Snapdragon 835
86		Chipset	MSM8998
87		Cores	8
88		big	(4x) 2.35 GHz
89		LITTLE	(4x) 1.9 GHz
90		Memory	4 GB
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