Performance Benchmark

Method

To conduct the performance benchmarking, all the applications are packaged as Docker images and deployed to Azure Container Instances with the configuration of 1 vCPU, 2 GiB memory, 0 GPUs, running on Linux OS.

To facilitate large-scale stream publishing and subscription, the srs-bench benchmarking tool is employed. Besides, all benchmark tests were performed with the same set of videos at different resolutions and bitrates, including 240P at 200 kbps, 480P at 500 kbps, and 720P at 1500 kbps.

Code

The following code sets up a live streaming server capable of:

Accepting and broadcasting AVC/AAC RTMP streams.
Transmuxing all the incoming RTMP streams into HLS streams with the built-in HLS transmuxer.
Serving HLS streams via ASP.NET Core’s static file middleware.
Enabling GOP caching based on the RTMP_ENABLE_GOP_CACHING environment variable.
Batching media packages within a 350ms window to optimize performance for large-scale RTMP broadcasting.
Providing an admin panel UI.

using LiveStreamingServerNet;
using LiveStreamingServerNet.AdminPanelUI;
using LiveStreamingServerNet.Rtmp;
using LiveStreamingServerNet.Standalone;
using LiveStreamingServerNet.Standalone.Installer;
using LiveStreamingServerNet.StreamProcessor.AspNetCore.Installer;
using LiveStreamingServerNet.StreamProcessor.Installer;
using System.Net;

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddLiveStreamingServer(
    new IPEndPoint(IPAddress.Any, 1935),
    serverConfig =>
    {
        serverConfig.Configure(options =>
        {
            options.EnableGopCaching = builder.Configuration.GetValue("RTMP_ENABLE_GOP_CACHING", true);
            options.MediaPacketBatchWindow = TimeSpan.FromMilliseconds(350);
        });

        serverConfig.AddVideoCodecFilter(builder => builder.Include(VideoCodec.AVC))
                    .AddAudioCodecFilter(builder => builder.Include(AudioCodec.AAC));

        serverConfig.AddStandaloneServices();

        serverConfig.AddStreamProcessor()
                    .AddHlsTransmuxer();
    }
);

builder.Services.AddCors(options =>
    options.AddDefaultPolicy(policy =>
        policy.AllowAnyHeader()
              .AllowAnyOrigin()
              .AllowAnyMethod()
    )
);

var app = builder.Build();

app.UseCors();

app.UseHlsFiles();

app.MapStandaloneServerApiEndPoints();

app.UseAdminPanelUI();

await app.RunAsync();

Results

Live-Streaming-Server-Net

150 Publishers Streaming RTMP Video at 240P and 200kbps

CPU UsageMemory UsageNetwork Bytes Received

CPU Usage

Memory Usage

Network Bytes Received

300 Publishers Streaming RTMP Video at 240P and 200kbps

CPU UsageMemory UsageNetwork Bytes Received

CPU Usage

Memory Usage

Network Bytes Received

150 Publishers Streaming RTMP Video at 480P and 500kbps

CPU UsageMemory UsageNetwork Bytes Received

CPU Usage

Memory Usage

Network Bytes Received

100 Publishers Streaming RTMP Video at 720P and 1500kbps

CPU UsageMemory UsageNetwork Bytes Received

CPU Usage

Memory Usage

Network Bytes Received

1000 Subscribers Receiving RTMP Video at 720P and 1500kbps

CPU UsageMemory UsageNetwork Bytes ReceivedNetwork Bytes Transmitted

CPU Usage

Memory Usage

Network Bytes Received

Network Bytes Transmitted

Live-Streaming-Server-Net with GOP caching disabled

Generally, if the stream is to be served as HLS, GOP caching, which consumes additional memory, is not necessary. Therefore, the benchmark tests are also conducted with GOP caching disabled.