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What is recording concurrency?

Type: General product inquiry    Platform: Linux   Last Updated: 2020/07/09 06:09:03

For the Agora On-premise Recording SDK, we conduct tests on the recording concurrency based on the following cloud hosting configuration:

  • AWS: Intel(R) Xeon(R) Platinum 8124M CPU @ 3.00 GHz
  • 16 Virtual Core CPU, 32 GB RAM
  • Disk I/O: 412 MB/s

Test conditions:

  • Each channel has two users/hosts. The resolution and frame rate of each channel are set as 320 × 240 and 15 fps respectively.
  • The resolution, frame rate, and bitrate of the recorded files in composite recording mode are set as 640 × 480, 15 fps, and 500 Kbps respectively; and the audio bitrate of the recorded files in composite recording mode is set as 48 Kbps.

Test results:

Channel Profile Recording Mode Performance
Live Broadcast Audio + Video
Individual recording		 When recording 215 channels simultaneously, the CPU usage is about 75%.
We recommend recording 200 channels simultaneously.
Audio + Video
Composite recording		 When recording 70 channels simultaneously, the CPU usage is about 75%.
We recommend recording 60 channels simultaneously.
Audio only
Composite recording		 When recording 300 channels simultaneously, the CPU usage is about 75%.
Communication Audio + Video
Individual recording		 When recording 210 channels simultaneously, the CPU usage is about 75%.
We recommend recording 200 channels simultaneously.
Audio + Video
Composite recording		 When recording 60 channels simultaneously, the CPU usage is about 75%.

The test results are for reference purposes only.