Performance

Performance Engineering

Tools

• VisualVM
• Gatling

Computing Resources

$ nproc 
1

$ cat /proc/meminfo | grep MemTotal
MemTotal:        1884384 kB

$ uname -m
x86_64

$ cat /etc/centos-release
CentOS Linux release 7.2.1511 (Core) 

Tomcat 7 settings

$ java -version
java version "1.8.0_91"
Java(TM) SE Runtime Environment (build 1.8.0_91-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.91-b14, mixed mode)

$ echo $CATALINA_OPTS
-Xms512M -Xmx1G

Connection settings ($CATALINA_HOME/conf/server.xml): default

    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />

Performance Test Results

CPU count	requests/sec	response time	screenshot	Gatling report
1	100	6 ms		download
1	250	35000 ms 33% failed		download
2	500	380 ms		download

VisualVM CPU/RAM consumption

2 CPUs, 500 users/sec, 10 min

VisualVM CPU sampler report

2 CPUs, 500 users/sec