JMeter 的 JVM 在 10 分钟后崩溃

Question

我在 10 个从站上使用 JMeter。执行 10 分钟后 java 崩溃：

# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x0000000051c39ea0, pid=2488, tid=0x0000000000000ac0
#
# JRE version: Java(TM) SE Runtime Environment (8.0_181-b13) (build 1.8.0_181-b13)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.181-b13 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# V  [jvm.dll+0x69ea0]
#
# Core dump written. Default location: C:\apache-jmeter-3.1\bin\hs_err_pid2488.mdmp
#
# If you would like to submit a bug report, please visit:
#   http://bugreport.java.com/bugreport/crash.jsp
#

VM Arguments:
jvm_args: -XX:+HeapDumpOnOutOfMemoryError -Xms512m -Xmx3276m -XX:NewSize=128m -XX:MaxNewSize=128m -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=50 -XX:MaxTenuringThreshold=2 -XX:+CMSClassUnloadingEnabled 
java_command: ApacheJMeter.jar
java_class_path (initial): ApacheJMeter.jar
Launcher Type: SUN_STANDARD

Environment Variables:
PATH=C:\Program Files (x86)\Common Files\Oracle\Java\javapath;C:\ProgramData\Oracle\Java\javapath;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Amazon\cfn-bootstrap\
USERNAME=XXX
OS=Windows_NT
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 85 Stepping 4, GenuineIntel

由于 OutOfMemoryError，我最近不得不增加 Java 所有从机和服务器机器的堆大小。所有 10 个从机都有 4GM RAM，服务器机器有 16GM RAM。当前的 JMeter 设置是：HEAP=-Xms512m -Xmx3276m

Answer 1

您正在使用 Java 8，但仍在使用旧的 JMeter 3.1 版本，

请尽量使用最新的Version 5.0 which is the first listed in JMeter best practices，同时针对你的问题，尽量减少资源：

Use non-GUI mode: jmeter -n -t test.jmx -l test.jtl

Use as few Listeners as possible; if using the -l flag as above they can all be deleted or disabled.

Don't use "View Results Tree" or "View Results in Table" listeners during the load test, use them only during scripting phase to debug your scripts.

Rather than using lots of similar samplers, use the same sampler in a loop, and use variables (CSV Data Set) to vary the sample. [The Include Controller does not help here, as it adds all the test elements in the file to the test plan.]

Don't use functional mode

Use CSV output rather than XML

Only save the data that you need

Use as few Assertions as possible Use the most performing scripting language (see JSR223 section)

Answer 2

不是JMeter崩溃，而是JVM崩溃。

您的配置有很多问题：

你有这个：

-Xms512m -Xmx3276m -XX:NewSize=128m -XX:MaxNewSize=128m

因为你的调整是错误的，请删除那些：

-XX:NewSize=128m -XX:MaxNewSize=128m

还要检查您是否是运行同一台机器上的 10 个从属：

(heap+metaspace size + Number of threads x Stack size) x 10 + 300m < Machine memory size

你说每个从站有 5 个线程，为什么要对这么少的从站进行分布式测试？ JMeter 能够在一台普通机器上运行 1000 个线程而不会出现问题。

最后，升级你的 jmeter 非常旧的版本。

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