jmeter压测报错 — java.lang.OutOfMemoryError: Java heap space

在Linux服务器上使用JMeter进行压力测试时遇到报错

java.lang.OutOfMemoryError: Java heap space
Dumping heap to java_pid21100.hprof ...
Heap dump file created [1165614889 bytes in 55.695 secs]

查询官方手册

To run JMeter, run the jmeter.bat (for Windows) or jmeter (for Unix) file

for windows:

jmeter.bat - run JMeter (in GUI mode by default)

jmeter-n.cmd - drop a JMX file on this to run a non-GUI test jmeter-n-r.cmd - drop a JMX file on this to run a non-GUI test remotely jmeter-t.cmd - drop a JMX file on this to load it in GUI mode jmeter-server.bat - start JMeter in server mode mirror-server.cmd - runs the JMeter Mirror Server in non-GUI mode shutdown.cmd - Run the Shutdown client to stop a non-GUI instance gracefully stoptest.cmd - Run the Shutdown client to stop a non-GUI instance abruptly
for linux:

jmeter - run JMeter (in GUI mode by default). Defines some JVM settings which may not work for all JVMs.

jmeter-server - start JMeter in server mode (calls jmeter script with appropriate parameters) jmeter.sh - very basic JMeter script with no JVM options specified. mirror-server.sh - runs the JMeter Mirror Server in non-GUI mode shutdown.sh - Run the Shutdown client to stop a non-GUI instance gracefully stoptest.sh - Run the Shutdown client to stop a non-GUI instance abruptly

修改：

windows编辑jmeter.bat,修改set HEAP的值

set JVM_ARGS="-Xms1024m -Xmx1024m "

解释一下各个参数：

-Xms1024M：初始化堆内存大小（注意，不加M的话单位是KB）

-Xmx1024M：最大堆内存大小

linux可以这样写：JVM_ARGS="-Xms1024m -Xmx1024m"  (JVM_ARGS代表启动JMeter时要使用的Java选项。这些将最后添加到java命令)，以下是举例

JVM_ARGS="-Xms4g -Xmx4g -XX:MaxMetaspaceSize=1g"

-XX:MaxPermSize=256M：最大类加载内存池大小

ps: jmeter5版本jmeter -n -t方式执行测试则修改jmeter文件即可

# system's memory availability:
: "${HEAP:="-Xms12g -Xmx12g -XX:MaxMetaspaceSize=1g"}"

# Set language

user guide原文地址：https://jmeter.apache.org/usermanual/get-started.html