Problems limiting groovyserv's max memory
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ale...@inqloud.com
Feb 19, 2018, 2:00:11 PM2/19/18
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I start groovyserv manually and I see that my memory limit is set for the java process -Xmx384m.
Some time later the memory limit seems to disappear as I've seen that the java process consumes much more memory.
Is this happening after a client restarts the server? Why would my client restart a server if the server is running?
Basically I am having trouble with ensuring a few java related environment variables, i.e. -Xmx and -Dfile.encoding=UTF-8
Ideas?
nobeans
Feb 19, 2018, 9:21:13 PM2/19/18
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Hi,
How did you specify the arguments?
I've tried now as follows:
```
$ JAVA_OPTS="-Xmx128m -Dfile.encoding=UTF-8 " groovyserver -r
(a space is required in order to avoid https://github.com/kobo/groovyserv/issues/79)
$ jcmd 35315 VM.command_line
35315:
VM Arguments:
jvm_args: -Xmx128m -Dfile.encoding=UTF-8 -Djava.awt.headless=true .....
$ build/executables/bin/groovyclient -e "println('Hello')"
Hello
$ jcmd 35315 VM.command_line
35315:
VM Arguments:
jvm_args: -Xmx128m -Dfile.encoding=UTF-8 -Djava.awt.headless=true .....
--> still OK.
$ groovyclient -Cr -v
....
--> This command restarts the server process.
$ jcmd 35315 VM.command_line
35315:
java.io.IOException: No such process
$ jcmd 36161 VM.command_line
36161:
VM Arguments:
jvm_args: -Djava.awt.headless=true ....
```
It's working expectedly.
Did you use any options like '-Cr' with groovyclient?
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Yasuharu Nakano
Alexey Panteleev
Feb 19, 2018, 11:25:23 PM2/19/18
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I start the server like this:
>groovyserver -r -v -t 100 --allow-from <IP>
The java options are defined in my environment:
JAVA_OPTS=-Xmx384m
JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF-8
Then groovyclient can be called many times by procmail (for email filtering)
>groovyclient -cp $GROOVYSERV/lib/* $GROOVYSERV/bin/MyApp.groovy
I used -Cenv LANG for a while too but not anymore.
After a while I find out that the server has lost the file.encoding=UTF-8 setting and -XMx because some special encoding done by our app stops working properly and the server’s java server runs to 4Gb of memory.
The client must be restarting the server but perhaps the environment is not set up when restarted by the client from procmail.
But I don’t understand why the server has to be restarted if I started it beforehand? And if it has to be restarted how to ensure the correct JAVA_ environment settings?
Thank you
-Alexey
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>groovyserver -r -v -t 100 --allow-from <IP>
The java options are defined in my environment:
JAVA_OPTS=-Xmx384m
JAVA_TOOL_OPTIONS=-Dfile.encoding=UTF-8
Then groovyclient can be called many times by procmail (for email filtering)
>groovyclient -cp $GROOVYSERV/lib/* $GROOVYSERV/bin/MyApp.groovy
I used -Cenv LANG for a while too but not anymore.
After a while I find out that the server has lost the file.encoding=UTF-8 setting and -XMx because some special encoding done by our app stops working properly and the server’s java server runs to 4Gb of memory.
The client must be restarting the server but perhaps the environment is not set up when restarted by the client from procmail.
But I don’t understand why the server has to be restarted if I started it beforehand? And if it has to be restarted how to ensure the correct JAVA_ environment settings?
Thank you
-Alexey
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Alexey Panteleev
Feb 19, 2018, 11:33:46 PM2/19/18
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To be exact the groovy client is called this way
>groovyclient -cp $GROOVYSERV/lib/* $GROOVYSERV/bin/MyApp.groovy -s "$HDR_FROM" -t $ORIG_TO $ROBOT_MODE_ARG
$ROBOT_MODE_ARG is mainly empty but for some emails it is “-r” and meant to be an option for MyApp.groovy
I wonder if “-r” maybe somehow treated as “-Cr”? Possible?
>groovyclient -cp $GROOVYSERV/lib/* $GROOVYSERV/bin/MyApp.groovy -s "$HDR_FROM" -t $ORIG_TO $ROBOT_MODE_ARG
$ROBOT_MODE_ARG is mainly empty but for some emails it is “-r” and meant to be an option for MyApp.groovy
I wonder if “-r” maybe somehow treated as “-Cr”? Possible?
Alexey Panteleev
Feb 21, 2018, 2:15:17 PM2/21/18
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Java process is running away:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11691 user 20 0 4068220 1.753g 6876 S 59.5 89.7 149:25.12 java
even though -Xmx384m was specified
user 11691 1 5 Feb19 ? 02:30:38 /usr/lib/jvm/default-java/bin/java -Xms128m -Xmx384m -server -Djava.awt.headless=true -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -classpath /usr/share/groovy2/lib/groovy-2.4.5.jar -Dscript.name=/usr/bin/groovy -Dprogram.name=groovy -Dgroovy.starter.conf=/usr/share/groovy2/conf/groovy-starter.conf -Dgroovy.home=/usr/share/groovy2 -Dtools.jar=/usr/lib/jvm/default-java/lib/tools.jar org.codehaus.groovy.tools.GroovyStarter --main groovy.ui.GroovyMain --conf /usr/share/groovy2/conf/groovy-starter.conf --classpath /usr/local/groovyserv-1.1.0/lib/*:. -e groovyx.groovyserv.GroovyServer.main(args) -- 1961 69.55.236.68 true -v
ps also shows
groovyclient -cp /home/user/tools/groovyserv/lib/filter-1.0-SNAPSHOT-jar-with-dependencies.jar /home/user/tools/groovyserv/bin/MyApp.groovy -s <...> -t <...> -r
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11691 user 20 0 4068220 1.753g 6876 S 59.5 89.7 149:25.12 java
even though -Xmx384m was specified
user 11691 1 5 Feb19 ? 02:30:38 /usr/lib/jvm/default-java/bin/java -Xms128m -Xmx384m -server -Djava.awt.headless=true -XX:+TieredCompilation -XX:TieredStopAtLevel=1 -classpath /usr/share/groovy2/lib/groovy-2.4.5.jar -Dscript.name=/usr/bin/groovy -Dprogram.name=groovy -Dgroovy.starter.conf=/usr/share/groovy2/conf/groovy-starter.conf -Dgroovy.home=/usr/share/groovy2 -Dtools.jar=/usr/lib/jvm/default-java/lib/tools.jar org.codehaus.groovy.tools.GroovyStarter --main groovy.ui.GroovyMain --conf /usr/share/groovy2/conf/groovy-starter.conf --classpath /usr/local/groovyserv-1.1.0/lib/*:. -e groovyx.groovyserv.GroovyServer.main(args) -- 1961 69.55.236.68 true -v
ps also shows
groovyclient -cp /home/user/tools/groovyserv/lib/filter-1.0-SNAPSHOT-jar-with-dependencies.jar /home/user/tools/groovyserv/bin/MyApp.groovy -s <...> -t <...> -r
nobeans
Feb 21, 2018, 8:56:39 PM2/21/18
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>groovyserver -r -v -t 100 --allow-from <IP>
I think you don't need to specify `--allow-from` option if you don't run a groovyserver process in the different computer.
> I wonder if “-r” maybe somehow treated as “-Cr”? Possible?
No. Just only '-Cr' or '-Crestart-server' will restart a server process.
I think that the server process just died for some reason. The "groovyclient" command try to run a new server process when there is no server process. That's why the process lost the environment variables you specified.
To know the reason which the server process was down, how about trying to run a server process with "-v,--verbose" option? The option makes a server process emit logs to `~/.groovy/groovyserv/groovyserver-<PID>.log`. However, because the amount of log is too many, pay attention to the diskful error or reduction in performance.
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Yasuharu Nakano
Alexey Panteleev
Feb 21, 2018, 11:48:13 PM2/21/18
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I have examined my existing log file I see many many repeating exceptions. Perhaps they’re cause memory leaks?
2018/02/21 20:36:09,990 [ERROR] (java.lang.ThreadGroup[name=system,maxpri=10]) (RequestWorker:168) Failed to send the exit status: 5
groovyx.groovyserv.exception.GServIOException: Failed to send exit status
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy:110)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy)
at groovyx.groovyserv.ClientConnection$sendExit$0.call(Unknown Source)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy:166)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovyx.groovyserv.RequestWorker.terminated(RequestWorker.groovy:177)
at java.util.concurrent.ThreadPoolExecutor.tryTerminate(ThreadPoolExecutor.java:713)
at java.util.concurrent.ThreadPoolExecutor.shutdown(ThreadPoolExecutor.java:1404)
at java.util.concurrent.ThreadPoolExecutor.lambda$finalize$0(ThreadPoolExecutor.java:1491)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.ThreadPoolExecutor.finalize(ThreadPoolExecutor.java:1492)
at java.lang.System$2.invokeFinalize(System.java:1270)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:210)
Caused by: java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
at groovyx.groovyserv.ClientConnection$_sendExit_closure1.doCall(ClientConnection.groovy:106)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
at groovy.lang.Closure.call(Closure.java:426)
at groovy.lang.Closure.call(Closure.java:442)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy:103)
... 20 more
(sanitized)
2018/02/21 20:36:09,998 [ERROR] (java.lang.ThreadGroup[name=system,maxpri=10]) (IOUtils:44) Failed to close
java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
at java_io_Closeable$close$0.call(Unknown Source)
at java_io_Closeable$close$0.call(Unknown Source)
at groovyx.groovyserv.utils.IOUtils.close(IOUtils.groovy:42)
at groovyx.groovyserv.utils.IOUtils$close$1.call(Unknown Source)
at groovyx.groovyserv.ClientConnection.close(ClientConnection.groovy:132)
at java_io_Closeable$close.call(Unknown Source)
at java_io_Closeable$close$0.call(Unknown Source)
at groovyx.groovyserv.utils.IOUtils.close(IOUtils.groovy:42)
at groovyx.groovyserv.utils.IOUtils$close$1.call(Unknown Source)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy:170)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovyx.groovyserv.RequestWorker.terminated(RequestWorker.groovy:177)
at java.util.concurrent.ThreadPoolExecutor.tryTerminate(ThreadPoolExecutor.java:713)
at java.util.concurrent.ThreadPoolExecutor.shutdown(ThreadPoolExecutor.java:1404)
at java.util.concurrent.ThreadPoolExecutor.lambda$finalize$0(ThreadPoolExecutor.java:1491)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.ThreadPoolExecutor.finalize(ThreadPoolExecutor.java:1492)
at java.lang.System$2.invokeFinalize(System.java:1270)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:210)
(sanitized)
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2018/02/21 20:36:09,990 [ERROR] (java.lang.ThreadGroup[name=system,maxpri=10]) (RequestWorker:168) Failed to send the exit status: 5
groovyx.groovyserv.exception.GServIOException: Failed to send exit status
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy:110)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy)
at groovyx.groovyserv.ClientConnection$sendExit$0.call(Unknown Source)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy:166)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovyx.groovyserv.RequestWorker.terminated(RequestWorker.groovy:177)
at java.util.concurrent.ThreadPoolExecutor.tryTerminate(ThreadPoolExecutor.java:713)
at java.util.concurrent.ThreadPoolExecutor.shutdown(ThreadPoolExecutor.java:1404)
at java.util.concurrent.ThreadPoolExecutor.lambda$finalize$0(ThreadPoolExecutor.java:1491)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.ThreadPoolExecutor.finalize(ThreadPoolExecutor.java:1492)
at java.lang.System$2.invokeFinalize(System.java:1270)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:210)
Caused by: java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
at groovyx.groovyserv.ClientConnection$_sendExit_closure1.doCall(ClientConnection.groovy:106)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)
at groovy.lang.Closure.call(Closure.java:426)
at groovy.lang.Closure.call(Closure.java:442)
at groovyx.groovyserv.ClientConnection.sendExit(ClientConnection.groovy:103)
... 20 more
(sanitized)
2018/02/21 20:36:09,998 [ERROR] (java.lang.ThreadGroup[name=system,maxpri=10]) (IOUtils:44) Failed to close
java.net.SocketException: Socket closed
at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:118)
at java.net.SocketOutputStream.write(SocketOutputStream.java:155)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
at java.io.FilterOutputStream.close(FilterOutputStream.java:158)
at java_io_Closeable$close$0.call(Unknown Source)
at java_io_Closeable$close$0.call(Unknown Source)
at groovyx.groovyserv.utils.IOUtils.close(IOUtils.groovy:42)
at groovyx.groovyserv.utils.IOUtils$close$1.call(Unknown Source)
at groovyx.groovyserv.ClientConnection.close(ClientConnection.groovy:132)
at java_io_Closeable$close.call(Unknown Source)
at java_io_Closeable$close$0.call(Unknown Source)
at groovyx.groovyserv.utils.IOUtils.close(IOUtils.groovy:42)
at groovyx.groovyserv.utils.IOUtils$close$1.call(Unknown Source)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy:170)
at groovyx.groovyserv.RequestWorker.closeSafely(RequestWorker.groovy)
at java.lang.reflect.Method.invoke(Method.java:498)
at groovyx.groovyserv.RequestWorker.terminated(RequestWorker.groovy:177)
at java.util.concurrent.ThreadPoolExecutor.tryTerminate(ThreadPoolExecutor.java:713)
at java.util.concurrent.ThreadPoolExecutor.shutdown(ThreadPoolExecutor.java:1404)
at java.util.concurrent.ThreadPoolExecutor.lambda$finalize$0(ThreadPoolExecutor.java:1491)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.concurrent.ThreadPoolExecutor.finalize(ThreadPoolExecutor.java:1492)
at java.lang.System$2.invokeFinalize(System.java:1270)
at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:210)
(sanitized)
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nobeans
Feb 25, 2018, 9:30:36 PM2/25/18
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I also sometimes saw the errors in my log files. I think the socket errors are no problem essentially.
Isn't there any errors else?
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Yasuharu Nakano
Alexey Panteleev
Mar 2, 2018, 2:58:51 AM3/2/18
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I set the following java option -XX:MaxMetaspaceSize=1024m and now I know for sure that groovyserv is causing my jvm to run out of meatspace memory.
>java.lang.OutOfMemoryError: Metaspace
Why is this happening?
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>java.lang.OutOfMemoryError: Metaspace
Why is this happening?
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> Yasuharu Nakano
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Alexey Panteleev
Mar 2, 2018, 3:11:36 AM3/2/18
to groov...@googlegroups.com
I wonder if -cp options the cause of this and the specified classes are loaded again and again?
groovyclient -cp /path/* script.groovy
groovyclient -cp /path/* script.groovy
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