When in low memory, threads become almost sequential and many errors occur

apache / jmeter

Apache JMeter open-source load testing tool for analyzing and measuring the performance of a variety of services

https://jmeter.apache.org/

Apache License 2.0

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Open Yadoon opened 2 months ago

Yadoon commented 2 months ago

this is my heap config : "${HEAP:="-Xms5g -Xmx5g -XX:MaxMetaspaceSize=1024m"}" This memory and CPU look very normal this is part of runtime log

I want to know why I behave strangely under high pressure and if it can be resolved

there are my plugins

5.4.1

java version "1.8.0_144" Java(TM) SE Runtime Environment (build 1.8.0_144-b01) Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)

centos7

FSchumacher commented 1 month ago

It is hard to tell what exactly causes your problems. There are many things involved, which could go wrong. A few suggestions to look at:

If you suspect heap space limitations, have a look at the JVM statistics during the run. jstats, visualvm or jmc might help you detect those.
What I suspect is, that you ran out of other resources like tcp connections (on client, server or somewhere in between). That might lead to a synchronization of your simulated clients, which then might overload the target.
Try to connect to the server under test when those SocketExceptions occur. If you are not able to connect to the server too, than have a look at the server, is it overloaded?