Hi,
I'm not a Java expert, but it looks like you need to check these errors:
When your system hangs, can open a remote (ssh) session from another system?
System can hang for several reasons, memory, resources, hard disk, or your system is just busy compiling your Java programs. I'd also like to suggest that you post your system details, like memory, Redhat version and release
Your java version may also helpful. You also try running top on another terminal while you are try to compile your Java code.
Im having a problem,
Any want know why after ive upgrade from Linux 7.0 to 7.1 ( 2.4.2-2 ) My mouse is having problem. If i drag a content in my Desktop let say an icon suddently the mouse stops moving ( Hang / freeze ) i need to do a hard reboot everytime to make it comes to normal. If... (4 Replies)
Hi everybody, i need help regarding my Linux start up.I was trying to configure internet connection with my Red Hat in order to use for Internet,but of no avail and I think I have changed one parameter to activate device during computer start up.
Now the problem is during start up and... (1 Reply)
All greetings:)
I had problem: hangs linux a server, and hangs always on miscellaneous and at various times, for example, can stand about one week, and can and in some minutes after reboot. Tried on a server to put windows 2003, with him problems do not arise. What could it be?:)
I from... (4 Replies)
Hello,
I am having a HP proliant 350 G3 sever installed wih RedHat linux 9.0
when I enterd using any user(Except root) the server hanged after few seconds, also the folder icons are blacked out and the names of the folder icons are disapper.
can any body help me.
Ajay (1 Reply)
Hi guys sorry for my English I am from GREECE and I speak from translator.I have in my school work to hang the program I've done is this
encounter the problems is that the meter that I have put on the mistakes does not work (I have not stated anywhere lathi = 0, not to reset the meter at each of... (1 Reply)
I have a script that collects data from about 200 servers using 'ssh'. The problem is that, process sometime hangs at some point stopping the execution of the script. Please give me some idea how can I force the execution to jump to the next step if there arises any problem !! Thanks for replies if... (1 Reply)
Hi,
I ported a file system from Kernel version 2.6.18.* to 2.6.32.46 as VFS implementation has changed and prepare_write/commit_write are replaced by write_begin/write_end pairs.
Implemented the feature by writing a wrapper for write_begin and write_end and calling original functions for... (0 Replies)
Dear All ,
One of our Oracle Database Server , which got hanged a couple of days before , so that we could not login to the Server , but it was pinging.
So we tried various options and at last we did a reboot of this server.
To find out the root cause of the Server Hang , when i checked the... (2 Replies)
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (0 Replies)
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (1 Reply)
Discussion started by: naveeng
1 Replies
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jvisualvm
jvisualvm(1) General Commands Manual jvisualvm(1)NAME
jvisualvm - Java Virtual Machine Monitoring, Troubleshooting, and Profiling Tool
SYNOPSIS
jvisualvm [ options ]
PARAMETERS
Options, if used, should follow immediately after the command name. Options may be in any order. For a discussion of parameters that apply
to a specific option, see OPTIONS below.
DESCRIPTION
Java VisualVM is an intuitive graphical user interface that provides detailed information about Java technology-based applications (Java
applications) while they are running on a given Java Virtual Machine (JVM(*)). The name Java VisualVM comes from the fact that Java Visu-
alVM provides information about the JVM software visually.
Java VisualVM combines several monitoring, troubleshooting, and profiling utilities into a single tool. For example, most of the function-
ality offered by the standalone tools jmap, jinfo, jstat and jstack have been integrated into Java VisualVM. Other functionalities, such as
some of those offered by the JConsole tool, can be added as optional plug-ins.
OPTIONS
The following option is possible when you launch Java VisualVM.
-J<jvm_option>
Pass this <jvm_option> to the JVM software.
USAGE
Java VisualVM is useful to Java application developers to troubleshoot applications and to monitor and improve the applications' perfor-
mance. Java VisualVM can allow developers to generate and analyse heap dumps, track down memory leaks, perform and monitor garbage collec-
tion, and perform lightweight memory and CPU profiling. Plug-ins also exist that expand the functionality of Java VisualVM. For example,
most of the functionality of the JConsole tool is available via the MBeans Tab and JConsole Plug-in Wrapper plug-ins. You can choose from a
catalog of standard Java VisualVM plug-ins by selecting 'Tools' | 'Plugins' in the Java VisualVM menus.
Start Java VisualVM with the following command:
% jvisualvm <options>
SEE ALSO
For more details about Java VisualVM see the following pages.
o Java VisualVM developers' site @
https://visualvm.dev.java.net
o Java VisualVM in Java SE platform documentation @
http://java.sun.com/javase/6/docs/technotes/guides/visualvm/index.html
(* The terms "Java Virtual Machine" and "JVM" mean a Virtual Machine for the Java platform.)
26 Mar 2008 jvisualvm(1)