When running JMeter, java server has the -Xmx value of only 512 MB. I tried to change it via following code in the jmeter.bat.sh file.
set HEAP=-server -Xms512m -Xmx6144m
set NEW=-XX:NewSize=512m -XX:MaxNewSize=6144m
also tried this:
set HEAP= -Xms512m -Xmx6144m
set NEW=-XX:NewSize=512m -XX:MaxNewSize=6144m
By checking the process after while JMeter is running I can see that java -sever doesn't recognize this setting.
If you are running jmeter startup script on Linux the syntax will be different, i.e:
HEAP="-Xms512m -Xmx6G"
as SET command is something Windows-specific
Alternatively you can define JVM_ARGS environment variable value like:
JVM_ARGS="-server -Xms512m -Xmx6G" && export JVM_ARGS
this way you won't need to edit files and/or restart JMeter.
Finally, you can launch JMeter jar directly like:
java -server -Xms512m -Xmx6G -jar ApacheJMeter.jar
See the following reference material:
Tuning Java Virtual Machines (JVMs)
JMeter Best Practices
9 Easy Solutions for a JMeter Load Test “Out of Memory” Failure
Related
I am trying to increase JVM Memory of my Go server.
This is what I see on /etc/default/go-server
# Ansible managed
export GO_SERVER_SYSTEM_PROPERTIES="-Dmail.smtp.starttls.enable=true"
export GO_SERVER_PORT=8153
export GO_SERVER_SSL_PORT=8154
export JAVA_HOME=/usr/lib/jvm/java
export SERVER_WORK_DIR=/var/lib/go-server
export GO_SERVER_SYSTEM_PROPERTIES="$GO_SERVER_SYSTEM_PROPERTIES -Dgo.plugin.build.status.go-server=http://localhost:8153"
Any idea how I can add -Xmx2048m here for GO_SERVERSYSPROPS?
Thanks.
JAVA_OPTS is the standard environment variable that some servers and other java apps append to the call that executes the java command.
JAVA_OPTS='-Xmx2048m'
I want to get GC logs from a program which runs on top of JVM. I know its possible to get those using
-Xloggc:GCLog.txt -verbose:gc -XX:+PrintGCDateStamps -XX:+UseSerialGC
parameters when running the application using
java -jar "jar_file".
But in this case I can't run the program in this manner by giving arguments, instead is there a way to specify them before running the application?
For an example we can set Xmx, Xms values using export
JVM_MEM_OPTS="-Xms100m -Xmx100m"
before running the java application.) Is there a similar way to specify GC parameters before running the application.
Thank you
For an example we can set Xmx, Xms values using export
JVM_MEM_OPTS="-Xms100m -Xmx100m"
This way is not standard and not referenced in the Java documentation.
JVM_MEM_OPTS, JAVA_OPTS or any environment variable will set the JVM options only because the tool/program that you use to start the JVM transmit it in the JVM options of the java command that is executed.
For example JAVA_OPTS is recognized in the Tomcat scripts (especially catalina.sh/bat).
-Xms100m -Xmx100m as -Xloggc:GCLog.txt -verbose:gc -XX:+PrintGCDateStamps -XX:+UseSerialGC are JVM options.
If you don't want to pass directly these options in the java command, you have to do as the tools that allows to use a custom environment variable : create a script (specific to the OS) that uses this environment variable as value of the JVM options such as (linux way):
java $JAVA_OPTS -jar "jar_file"
I want to alter (increase) java memory limit (JRE on windows pc).
I fount following commands everywhere:
-Xms set initial Java heap size
-Xmx set maximum Java heap size
for example -Xmx1024m.
But my Question is where! do I have to enter this command. Sorry for this beginner question. Normally I do not have any contact to java.
If you are using eclipse and try to run standalone java then use vm argument section in run configuration tab .For tomcat or app server in setenv script file put
set JAVA_OPTS=-Xms1024m -Xmx1024m -XX:PermSize=64m -XX:MaxPermSize=384m
for executable jar
java -Xms1024m -Xmx1024m -jar FILENAME.jar
Those are Arguments for the Virtual Machine that you pass in the command line when you start the app
example:
in the console doing:
java -Xms256m -Xmx1024m HelloWorld
or if you are in eclipse (or any other ide)
I'm new in the Oracle world and I'm working with Oracle Identity Analytics (OIA). In the test environment everything is ok, but in production environment i'm getting an "java.lang.OutOfMemoryError", so when I checked the Xmx and Xms I saw that I had Xmx:512m and Xms:512m, that's why I'm trying to modify the Xmx value.
I want to modify the Xmx and Xms values so I wrote the following line in my PuTTY:
$ java -Xmx1024m
But the PuTTY shows me the following:
Usage: java [-options] class [args...] (to execute a class) or
java [-options] -jar jarfile [args...] (to execute a jar file)
where options include:...
Seems like I'm forgetting something after "Xmx1024m", but what? Well, now I know I'm forgetting Jar file, Class or App name but I have no idea how to get any of those things. I tried putting "$AdminServer" after "Xmx1024m" but it didn't work.
My Java version is 1.6.0_45 Oracle JRockit build R28 and the Operative Systems is Linux Server 6.5.
Regards!
You have to pass filepath to execute. Of course, you can run
java -Xmx1024m
but Java doesn't know what file should be executed
You will have to pass the program-name/filename/jar-name,whatever it is,with path for which you want to set/reset the java heap size.
e.g
java -Xms1024M -Xmx2048M -jar xi.jar
java -Xmx64m ${PROGRAM_NAME}
Hope this helps you.Or to help you better,could you please tell us what exactly is your scenario?
Is there a way to set -Xmx when i start the application with "./activator start"
I tried (not working):
./activator start -J-Xmx2g
./activator -mem 2048 start
_JAVA_OPTIONS="-Xmx2g" ./activator start
It says
"Picked up _JAVA_OPTIONS: -Xmx2g"
but still not working.
Also tried various values in build.sbt and application.conf - no luck
The only way i could make it work was to use
"stage" and pass -Xmx2g to the generated shell script, which is fine, but it doesn't detach the console.
I think I tried all I found on google but still no luck.
I would like to pass -Xmx to the activator start somehow.
First define an environment variable with your JVM parameters named _JAVA_OPTIONS
export _JAVA_OPTIONS="-Xmx2048m"
and then try the play start or use the activator.
I have found solution. There is some bug in activator shell script, so passing -J-Xmx argument does not remove default mem options. To change mem parameter have a look at your activator script (/usr/local/bin/activator) and have a look how mem parameters are added. Also notice that passing -v argument will print final command to lunch java. Working solution on linux for me is this:
export JAVA_OPTS="-Xmx2700m";activator -v
# Executing command line:
java
-Dactivator.home=/usr/local/bin
-Xmx2700m
-jar
/usr/local/bin/activator-launch-1.3.2.jar
Examples of not working solution:
_JAVA_OPTIONS="-Xmx2048m";activator -J-Xmx2700m -J-Xms1024m -v
# Executing command line:
java
-Dactivator.home=/usr/local/bin
-Xmx2700m
-Xmx2700m
-Xms1024m
-jar
/usr/local/bin/activator-launch-1.3.2.jar
Also not working:
activator -J-Xmx2700m -J-Xms1024m -v
# Executing command line:
java
-Dactivator.home=/usr/local/bin
-Xmx2700m
-Xmx2700m
-Xms1024m
-jar
/usr/local/bin/activator-launch-1.3.2.jar
I think you need to specify both, min and max heap size, try this:
activator -J-Xmx2048m -J-Xms2048m start