[英]Setting Java Heap Size under Apache Karaf
I apologize if this is a duplicate, but I can't seem to find this answered anywhere. 如果这是重复的话,我道歉,但我似乎无法在任何地方找到答案。
What is the best way to increase the maximum Java heap size when using Apache Karaf? 使用Apache Karaf时增加最大Java堆大小的最佳方法是什么?
Currently, I modified the following line in the karaf.bat file: 目前,我修改了karaf.bat文件中的以下行:
set DEFAULT_JAVA_OPTS=-server -Xmx<NewMaxValue>M
. set DEFAULT_JAVA_OPTS=-server -Xmx<NewMaxValue>M
I feel like modifying the bat file is not the best solution. 我觉得修改bat文件不是最好的解决方案。 Additionally, none of the config files seem to have a place to put this.
此外,没有一个配置文件似乎有地方放这个。
Thanks 谢谢
(At least) in karaf 2.2.10: (至少)在karaf 2.2.10中:
bin/start
bin/start
运行karaf As Ford Guo pointed out, memory values could be configured in the bin/setenv
file: 正如Ford Guo指出的那样,可以在
bin/setenv
文件中配置内存值:
export JAVA_MIN_MEM=256M # Minimum memory for the JVM
export JAVA_MAX_MEM=1024M # Maximum memory for the JVM
export JAVA_PERM_MEM=128M # Minimum perm memory for the JVM
export JAVA_MAX_PERM_MEM=256M # Maximum memory for the JVM
karaf-service
) karaf-service
) In this case any exported variable seems to be ignored. 在这种情况下,任何导出的变量似乎都会被忽略。
The maximum java heap size could be defined in the etc/karaf-wrapper.conf
: 最大的Java堆大小可以在
etc/karaf-wrapper.conf
定义:
# Maximum Java Heap Size (in MB)
wrapper.java.maxmemory=1024
Updating to Karaf 2.2.3 reveals a new bat file. 更新到Karaf 2.2.3会显示一个新的bat文件。
if "%JAVA_MIN_MEM%" == "" (
set JAVA_MIN_MEM=128M
)
if "%JAVA_MAX_MEM%" == "" (
set JAVA_MAX_MEM=512M
)
if "%JAVA_PERM_MEM%" == "" (
set JAVA_PERM_MEM=16M
)
if "%JAVA_MAX_PERM_MEM%" == "" (
set JAVA_MAX_PERM_MEM=64M
)
This means one can just create a system variable instead of modifying the bat file. 这意味着可以只创建一个系统变量而不是修改bat文件。
在bin目录中,有一个setenv(.bat)文件,你可以在那里设置max / min mem。
setenv
wasnt loaded for me (using the karaf wrapper), so I put it into the wrapper config: ( /opt/apache-servicemix-6.1.3/etc/karaf-wrapper.conf
in my case) setenv
为我加载(使用karaf包装器),所以我把它放入包装器配置/opt/apache-servicemix-6.1.3/etc/karaf-wrapper.conf
在我的情况下/opt/apache-servicemix-6.1.3/etc/karaf-wrapper.conf
)
# JVM Parameters
# note that n is the parameter number starting from 1.
wrapper.java.additional.1=-Dkaraf.home=%KARAF_HOME%
wrapper.java.additional.2=-Dkaraf.base=%KARAF_BASE%
wrapper.java.additional.3=-Dkaraf.data=%KARAF_DATA%
wrapper.java.additional.4=-Dkaraf.etc=%KARAF_ETC%
wrapper.java.additional.5=-Dcom.sun.management.jmxremote
wrapper.java.additional.6=-Dkaraf.startLocalConsole=false
wrapper.java.additional.7=-Dkaraf.startRemoteShell=true
wrapper.java.additional.8=-Djava.endorsed.dirs=%JAVA_HOME%/jre/lib/endorsed:%JAVA_HOME%/lib/endorsed:%KARAF_HOME%/lib/endorsed
wrapper.java.additional.9=-Djava.ext.dirs=%JAVA_HOME%/jre/lib/ext:%JAVA_HOME%/lib/ext:%KARAF_HOME%/lib/ext
# added by me
wrapper.java.additional.10=-XX:PermSize=512m
wrapper.java.additional.11=-XX:MaxPermSize=512m
Check prior to the restart: 重启之前检查:
# get process id of you running instance
jps -lvm
# or
ps aux | grep java
# check memory before and after restarting the service to see wether it changed
jmap -heap $MY_PID 2>/dev/null | sed -ne '/Heap Configuration/,$p';
That what I would do in your situation. 这就是我在你的情况下会做的事情。
I have seen people suggest using a service start which allows you define the the command line arguments. 我见过人们建议使用服务启动,它允许您定义命令行参数。
I liked using the webconsole so I changed it so it read a karaf.vmoptions file for the applications it starts. 我喜欢使用webconsole所以我更改了它,因此它为它启动的应用程序读取了一个karaf.vmoptions文件。 This requires patching the code, but it turned out to be very useful.
这需要修补代码,但结果证明是非常有用的。
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