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The performance benchmark for SRS, compare with nginx-rtmp single process.

Provides detail benchmark steps.

The latest data, read performance.

The client and server use lo net interface to test:

• Hardware: VirtualBox on ThinkPad T430
• OS: CentOS 6.0 x86_64 Linux 2.6.32-71.el6.x86_64
• CPU: 3 Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz
• Memory: 2007MB

Login as root, set the fd limits:

• Set limit: ulimit -HSn 10240
• View the limit:

[root@dev6 ~]# ulimit -n 10240

• Restart SRS：sudo /etc/init.d/srs restart

NGINX-RTMP version and build command.

• NGINX: nginx-1.5.7.tar.gz
• NGINX-RTMP: nginx-rtmp-module-1.0.4.tar.gz
• Read nginx-rtmp
• Build:

./configure --prefix=`pwd`/../_release \ --add-module=`pwd`/../nginx-rtmp-module-1.0.4 \ --with-http_ssl_module && make && make install

• Config nginx：_release/conf/nginx.conf

user root; worker_processes 1; events { worker_connections 10240; } rtmp{ server{ listen 19350; application live{ live on; } } }

• The limit of fd:

[root@dev6 nginx-rtmp]# ulimit -n 10240

• Start: ./_release/sbin/nginx
• Check nginx started:

[root@dev6 nginx-rtmp]# netstat -anp|grep 19350 tcp 0 0 0.0.0.0:19350 0.0.0.0:* LISTEN 6486/nginx

SRS version and build.

• SRS: SRS 0.9
• Build: ./configure && make
• Config SRS：conf/srs.conf

listen 1935; max_connections 10240; vhost __defaultVhost__ { gop_cache on; forward 127.0.0.1:19350; }

• Check limit fds:

[root@dev6 trunk]# ulimit -n 10240

• Start SRS: nohup ./objs/srs -c conf/srs.conf >/dev/null 2>&1 &
• Check SRS started:

[root@dev6 trunk]# netstat -anp|grep "1935 " tcp 0 0 0.0.0.0:1935 0.0.0.0:* LISTEN 6583/srs

Use centos to publish RTMP:

• Start FFMPEG:

for((;;)); do \ ./objs/ffmpeg/bin/ffmpeg \ -re -i doc/source.flv \ -acodec copy -vcodec copy \ -f flv rtmp://127.0.0.1:1935/live/livestream; \ sleep 1; done

• SRS RTMP stream URL: rtmp://192.168.2.101:1935/live/livestream
• Online play SRS RTMP: Online Player
• Nginx-RTMP stream URL: rtmp://192.168.2.101:19350/live/livestream
• Online play nginx-rtmp RTMP: Online Player

The RTMP load test tool, read srs-bench

The sb_rtmp_load used to test RTMP load, support 800-3k concurrency for each process.

• Build: ./configure && make
• Start: ./objs/sb_rtmp_load -c 800 -r <rtmp_url>

Record data before test:

• Use top command：

srs_pid=`ps aux|grep srs|grep conf|awk '{print $2}'`; \ nginx_pid=`ps aux|grep nginx|grep worker|awk '{print $2}'`; \ load_pids=`ps aux|grep objs|grep sb_rtmp_load|awk '{ORS=",";print $2}'`; \ top -p $load_pids$srs_pid,$nginx_pid

• The connections:

srs_connections=`netstat -anp|grep srs|grep ESTABLISHED|wc -l`; \ nginx_connections=`netstat -anp|grep nginx|grep ESTABLISHED|wc -l`; \ echo "srs_connections: $srs_connections"; \ echo "nginx_connections: $nginx_connections";

• The bandwidth in NBps:

[root@dev6 nginx-rtmp]# dstat -N lo 30 ----total-cpu-usage---- -dsk/total- -net/lo- ---paging-- ---system-- usr sys idl wai hiq siq| read writ| recv send| in out | int csw 0 0 96 0 0 3| 0 0 |1860B 58k| 0 0 |2996 465 0 1 96 0 0 3| 0 0 |1800B 56k| 0 0 |2989 463 0 0 97 0 0 2| 0 0 |1500B 46k| 0 0 |2979 461 

• The table

Memory(Mem): The memory usage in MB.

Clients(Conn): The connections/clients to server.

ExpectNbps(ENbps): The expect network bandwidth in Xbps.

ActualNbps(ANBps): The actual network bandwidth in Xbps.

srs-bench(srs-bench/sb): The mock benchmark client tool.

Latency(Lat): The latency of client.

Let's start performance benchmark.

• Start 500 clients

./objs/sb_rtmp_load -c 500 -r rtmp://127.0.0.1:1935/live/livestream >/dev/null &

• The data:

• The data for 1000 clients:

• The data for 1500 clients:

• The data for 2000 clients:

• The data for 2500 clients:

Let's start performance benchmark.

• Start 500 clients:

./objs/sb_rtmp_load -c 500 -r rtmp://127.0.0.1:19350/live/livestream >/dev/null &

• The data for 500 clients:

• The data for 1000 clients:

| Server | CPU | Memory | Clients | ExpectNbps | ActualNbps | srs-bench | Latency

• The data for 1500 clients:

• The data for 2000 clients:

• The data for 2500 clients:

The performance is refined to support about 4k clients.

[winlin@dev6 srs]$ ./objs/srs -v 0.9.130 

top - 19:52:35 up 1 day, 11:11, 8 users, load average: 1.20, 1.05, 0.92 Tasks: 171 total, 4 running, 167 sleeping, 0 stopped, 0 zombie Cpu0 : 26.0%us, 23.0%sy, 0.0%ni, 34.0%id, 0.3%wa, 0.0%hi, 16.7%si, 0.0%st Cpu1 : 26.4%us, 20.4%sy, 0.0%ni, 34.1%id, 0.7%wa, 0.0%hi, 18.4%si, 0.0%st Cpu2 : 22.5%us, 15.4%sy, 0.0%ni, 45.3%id, 1.0%wa, 0.0%hi, 15.8%si, 0.0%st Mem: 2055440k total, 1972196k used, 83244k free, 136836k buffers Swap: 2064376k total, 3184k used, 2061192k free, 926124k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 17034 root 20 0 415m 151m 2040 R 94.4 7.6 14:29.33 ./objs/srs -c console.conf 1063 winlin 20 0 131m 68m 1336 S 17.9 3.4 54:05.77 ./objs/sb_rtmp_load -c 800 -r rtmp://127.0.0.1:1935/live/livestream 1011 winlin 20 0 132m 68m 1336 R 17.6 3.4 54:45.53 ./objs/sb_rtmp_load -c 800 -r rtmp://127.0.0.1:1935/live/livestream 18736 winlin 20 0 113m 48m 1336 S 17.6 2.4 1:37.96 ./objs/sb_rtmp_load -c 800 -r rtmp://127.0.0.1:1935/live/livestream 1051 winlin 20 0 131m 68m 1336 S 16.9 3.4 53:25.04 ./objs/sb_rtmp_load -c 800 -r rtmp://127.0.0.1:1935/live/livestream 18739 winlin 20 0 104m 39m 1336 R 15.6 2.0 1:25.71 ./objs/sb_rtmp_load -c 800 -r rtmp://127.0.0.1:1935/live/livestream 

[winlin@dev6 ~]$ dstat -N lo 30 ----total-cpu-usage---- -dsk/total- ---net/lo-- ---paging-- ---system-- usr sys idl wai hiq siq| read writ| recv send| in out | int csw 3 2 92 0 0 3| 11k 27k| 0 0 | 1B 26B|3085 443 32 17 33 0 0 17| 273B 60k| 69M 69M| 0 0 |4878 6652 34 18 32 0 0 16| 0 38k| 89M 89M| 0 0 |4591 6102 35 19 30 0 0 17| 137B 41k| 91M 91M| 0 0 |4682 6064 33 17 33 0 0 17| 0 31k| 55M 55M| 0 0 |4920 7785 33 18 31 0 0 17|2867B 34k| 90M 90M| 0 0 |4742 6530 32 18 33 0 0 17| 0 31k| 66M 66M| 0 0 |4922 7666 33 17 32 0 0 17| 137B 39k| 65M 65M| 0 0 |4841 7299 35 18 30 0 0 17| 0 28k| 100M 100M| 0 0 |4754 6752 32 17 33 0 0 18| 0 41k| 44M 44M| 0 0 |5130 8251 34 18 32 0 0 16| 0 30k| 104M 104M| 0 0 |4456 5718 

SRS2.0.15, not SRS1.0, performance is refined to support 6k clients. That is 4Gbps for 522kbps bitrate, for a single SRS process. Read https://github.com/ossrs/srs/issues/194

SRS2.0.30 refined to support 7.5k clients, read https://github.com/ossrs/srs/issues/217

Winlin 2014.11