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.

Encoder (setting)	res	FPS	Content	HW	Ver
libx264	2160p	43	NZ	H1
libx264	2160p	32	NZ	H2
libvpx	2160p	28	NZ	H1
mjpeg	2160p	65	NZ	H1
gpujpeg (90)	2160p	150	NZ2500	H3	1.3
gpujpeg (90)	2160p	137	NZ2500	H4	1.3
gpujpeg (90)	2160p	157	NZ2500	H5	1.3
gpujpeg (90)	2160p	201	NZ2500	H6	1.3
gpujpeg (90:8)	2160p	207	NZ2500	H6	1.3
gpujpeg (90:16)	2160p	200	NZ2500	H6	1.3
gpujpeg (90)	2160p	178+146	NZ2500	H7	1.3
gpujpeg (90)	2160p	92	NZ2500	H8	1.3
gpujpeg (90)	2160p	96+96	NZ2500	H9	1.3
gpujpeg (90)	2160p	130	NZ2500	H10	1.3

Legend:

H1

Intel i7-4960X

H2

Intel i7-980X

H3

kypowall0 (i7-4770S, NV GTX 980, 4x8G DDR3@1600)

H4

hd12 (i7-4960X, 32 GB 1866 MHz DDR3, NV GTX 960)

H5

i7-5960X, DDR4@2166, NV GTX 960

H6

i7-5960X, DDR4@2166, GeForce GTX Titan Black

H7

i7-5960X, DDR4@2166, GeForce GTX Titan Black + NV 960

H8

bunny(2x Xeon E5-2660 v2, [email protected], 2 x GeForce GTX Titan) (utilization of both cards around 50%, the same in previous case)

H9

hdd1(i7-4930K, 780Ti,2x4GB DDR3@1333)

1.3

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 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