Version: 4.0

Performance Banchmark

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

Provides detail benchmark steps.

The latest data, read performance.

Hardware

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

OS

Set limit: ulimit -HSn 10240
View the limit:

[root@dev6 ~]# ulimit -n
10240

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

NGINX-RTMP

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

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

Publish and Play

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

Client

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

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

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	1.0%	3MB	3	-	-	-	0.8s
nginx-rtmp	0.7%	8MB	2	-	-	-	0.8s

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.

Benchmark SRS

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:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	9.0%	8MB	503	100Mbps	112Mbps	12.6%	0.8s

The data for 1000 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	23.6%	13MB	1003	200Mbps	239Mbps	16.6%	0.8s

The data for 1500 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	38.6%	20MB	1503	300Mbps	360Mbps	17%	0.8s

The data for 2000 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	65.2%	34MB	2003	400Mbps	480Mbps	22%	0.8s

The data for 2500 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
SRS	72.9%	38MB	2503	500Mbps	613Mbps	24%	0.8s

Benchmark NginxRTMP

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:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
nginx-rtmp	8.3%	13MB	502	100Mbps	120Mbps	16.3%	0.8s

The data for 1000 clients:

Server	CPU	Memory	Clients	ExpectNbps	ActualNbps	srs-bench	Latency
nginx-rtmp	27.3%	19MB	1002	200Mbps	240Mbps	30%	0.8s

The data for 1500 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
nginx-rtmp	42.3%	25MB	1502	300Mbps	400Mbps	31%	0.8s

The data for 2000 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
nginx-rtmp	48.9%	31MB	2002	400Mbps	520Mbps	33%	0.8s

The data for 2500 clients:

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
nginx-rtmp	74.2%	37MB	2502	500Mbps	580Mbps	35%	0.8s

Performance Compare

Server	CPU	Mem	Conn	ENbps	ANbps	sb	Lat
nginx-rtmp	8.3%	13MB	502	100Mbps	120Mbps	16.3%	0.8s
SRS	9.0%	8MB	503	100Mbps	112Mbps	12.6%	0.8s
nginx-rtmp	27.3%	19MB	1002	200Mbps	240Mbps	30%	0.8s
SRS	23.6%	13MB	1003	200Mbps	239Mbps	16.6%	0.8s
nginx-rtmp	42.3%	25MB	1502	300Mbps	400Mbps	31%	0.8s
SRS	38.6%	20MB	1503	300Mbps	360Mbps	17%	0.8s
nginx-rtmp	48.9%	31MB	2002	400Mbps	520Mbps	33%	0.8s
SRS	65.2%	34MB	2003	400Mbps	480Mbps	22%	0.8s
nginx-rtmp	74.2%	37MB	2502	500Mbps	580Mbps	35%	0.8s
SRS	72.9%	38MB	2503	500Mbps	613Mbps	24%	0.8s