Performance

UltraGrid Performance

This site contains the results of performance tests of UltraGrid.

End-to-End Latency

The following table compares performance of individual cards. The results are measured as end-to-end frame-delay, i.e. the number of frames sent before the reciever outputs the original frame.

Linux

Setup:

• Testing machine: hd2
• Reference machine: hd4 with BlackMagic Decklink HD Extreme
• For the test, we used 1080i HD video at 29.97Fps.

Card	send	recieve
DVS Centaurus II	5	3
BlackMagic DeckLink HD Extreme	3.75	3.75
BlackMagic DeckLink 4K Extreme	3.5	3
BlackMagic Decklink Quad	4.5	4
BlackMagic Decklink Intensity PRO	4.5	4
BlackMagic Decklink Intensity	4.5	4.5
Deltacast 3G	4.5	3
OpenGL	-	2.5

MacOS X

Setup:

• Testing machine: hd7
• Reference machine: hd4 with BlackMagic Decklink HD Extreme
• For the test, we used 1080i HD video at 29.97Fps.

Card	send	recieve
AJA Kona 3G	4	3.5
DeckLink HD Pro (Quicktime)	4.5	5.5
DeckLink HD Pro (native API)	4.5	4
OpenGL (with VSync)	-	2.25
OpenGL (without VSync)	-	1.75

Windows

Setup:

• Testing machine: hd7
• Reference machine: hd4 with BlackMagic Decklink HD Extreme
• For the test, we used 1080i HD video at 29.97Fps.

Card	send	recieve
BlackMagic DeckLink HD Extreme	4.5	3.5
BlackMagic Decklink Quad	4.5	4
BlackMagic Decklink Intensity PRO	4.5	3.5
BlackMagic Decklink Intensity	4.5	4
Deltacast 3G	4	3

Compression

Performance

Here you can see the performance of individual compression modules (encoding). For the measurement purposes, we used machine hd2 running Ubuntu as receiver and hd7 as sender. We used Decklink HD Extreme as grabbing cards on both sides. We used a 4k video with increasing framerate to pin down the biggest achievable that still offers fluent video experience.

UYVY, 8bit

module	2k	4k	Content	HW	version
RTDXT:DXT1	150 Fps	52 Fps
RTDXT:DXT5_YCoCg	110 Fps	38 Fps
cuda_DXT	280 Fps	80 Fps
libavcodec:codec=H.264	50 Fps	16 Fps
libavcodec:codec=H.264		43 Fps	New Zeland 4K	Intel i7-4960X
libavcodec:codec=H.264		32 Fps	New Zeland 4K	Intel i7-980X
libavcodec:codec=VP8		28 Fps	New Zeland 4K	Intel i7-4960X
libavcodec:codec=MJPEG		65 Fps	New Zeland 4K	Intel i7-4960X
JPEG:90	170 Fps	45 Fps
JPEG:90		150 Fps	NZ (frame 2500)	kypowall0 (i7-4770S, NV GTX 980, 4x8G DDR3@1600)	UG v1.3-140-g08dba83
JPEG:90		137 Fps	NZ (frame 2500)	hd12 (i7-4960X, 32 GB 1866 MHz DDR3, NV GTX 960)	UG v1.3-140-g08dba83
JPEG:90		157 Fps	NZ (frame 2500)	i7-5960X, DDR4@2166, NV GTX 960	UG v1.3-140-g08dba83
JPEG:90		201 Fps	NZ (frame 2500)	i7-5960X, DDR4@2166, GeForce GTX Titan Black	UG v1.3-140-g08dba83
JPEG:90:8		207 Fps	NZ (frame 2500)	i7-5960X, DDR4@2166, GeForce GTX Titan Black	UG v1.3-140-g08dba83
JPEG:90:16		200 Fps	NZ (frame 2500)	i7-5960X, DDR4@2166, GeForce GTX Titan Black	UG v1.3-140-g08dba83
JPEG:90		178 + 146 Fps	NZ (frame 2500)	i7-5960X, DDR4@2166, GeForce GTX Titan Black + NV 960	UG v1.3-140-g08dba83
JPEG:90		92 Fps	NZ (frame 2500)	bunny(2x Xeon E5-2660 v2, [email protected], GeForce GTX Titan)	UG v1.3-140-g08dba83
JPEG:90		96 + 96 Fps	NZ (frame 2500)	bunny(2x Xeon E5-2660 v2, [email protected], 2 x GeForce GTX Titan) (utilization of both cards around 50%, the same in previous case)	UG v1.3-140-g08dba83
JPEG:90		130 Fps	NZ (frame 2500)	hdd1(i7-4930K, 780Ti,2x4GB DDR3@1333)	UG v1.3-140-g08dba83

Latency

We also measured the latency added by the compression modules. For the tests 1080p@30fps was used, compressing at [[hd7|UltraGrid_Testbed#hd7]]running Ubuntu and decompression done by hd2

module	end-to-end latency
uncompressed	3.75
cuda_dxt	3.75 (+0)
RTDXT:DXT1	6 (+2)
RTDXT:DXT5	5.5 (+1.75)
JPEG:90:0	4 (+0.25)
JPEG:97:0	4 (+0.25)
H.264	5 (+1.25)

Bandwidth

Here you can see the measured bandwidth including overhead with 9000B Ethernet frames. Uncompressed signal was 8-bit YUV422.

module	1080i@30	2k@30	4k (4096 × 2160)@25fps
uncompressed	980 Mbps	1504 Mbps	3489 Mbps
DXT1	245 Mbps	376 Mbps	870 Mbps
DXT5 YCoCg	489 Mbps	752 Mbps	- Mbps
JPEG:90	80 Mbps	85 Mbps	160 Mbps
H.264	22 Mbps	22 Mbps	60 Mbps