07-06-2010
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
We are trying to tune a server which phsycially is maxed out on cpu.
We are maxing out on memory and swapping at a rate of 20-43% of our swap space which is approx 45% of total ram.
We "can" upgrade to twice the memory that we currently have but it will be costly as there are no more seats... (5 Replies)
Discussion started by: MizzGail
5 Replies
2. Solaris
Hi,
The physical memory of the unix box running on sun solaris is going to be increased. What extra conf. changes should I take care in order for the Apache server to recognise the extra memory. Your response asap is appreciated.
Thanks
ravi (1 Reply)
Discussion started by: rkrgarlapati
1 Replies
3. UNIX for Advanced & Expert Users
hi all,
i need to replicate the environment of one server in another.
Two servers are there A and B. i need to replicate A's environment on B.
The server A's memory utlisation is 60%, whereas server B's is 15 to 20%. Can some one tell how i can increase the memory utilisation of B to reach... (5 Replies)
Discussion started by: sais
5 Replies
4. Solaris
When i changed jvm memory settings from 3048 to 3548, appsserver could not start. if no change , it was normal. How do we change .otherwise i had a out of swap space error appeared after 3hrs period when do the monitoring of java application. (1 Reply)
Discussion started by: vijill
1 Replies
5. Solaris
Hi,
I have solaris 10 (sparc) operating system machine on which I have installed supported weblogic 10.3. It was installed properly. As we know weblogic uses jvm to run and uses a part of jvm memory.
But I am facing one problem in which JVM is getting crashed again and again resulting my... (2 Replies)
Discussion started by: neeraj.tati
2 Replies
6. Shell Programming and Scripting
i need to find memory usage by JVM in shell prompt,
i tried with
pidVal=$( ps -ef | grep "/opt/bea2/jrockit/bin/java -jrockit" | grep -v grep | awk -F' ' '{print $2}' | tr "\n" "," | cut -d ',' -f1 )
top -b -n 1 | grep $pidVal
this will just give cpu usage and ram... How do i find... (4 Replies)
Discussion started by: vivek d r
4 Replies
7. UNIX for Advanced & Expert Users
Hello,
i need just a Unix command line (AIX 6) that gives me the memory/CPU used by a WebSphere JVM from it's PID such as ps -ef | grep 'jvm name'.
I know jstat -gc PID but it didn't work
Could you help me please
Thanks
Christian (1 Reply)
Discussion started by: steiner
1 Replies
8. UNIX for Dummies Questions & Answers
Hi all,
I am starting a JVM in unix and when I use ps command on the pid of process starting JVM the output is something like this :-
java -Xms32M -Xmx64M -Xmx128M
I need to know what would be the value of Xmx in this case.
And how to check that this value be picked while starting JVM... (3 Replies)
Discussion started by: Raj999
3 Replies
9. UNIX for Dummies Questions & Answers
Hi ,
Whenever I am starting JVM it is getting started with Xms as 256MB, which is 1/64 of the Memory available and by default this should happen.
But I want to change and start the every JVM with 128MB.
Is there any way to do or I have to manually specify Xms tag while starting JVM.
Thanks (1 Reply)
Discussion started by: Raj999
1 Replies
10. Programming
Hi,
i have this scenario, when i start about 20 java processes simultaneously in unix and run ps -eaf command i can see that processes are running but memory is not getting allocated to them immediately and it stays ideal for at least 10-15 min.
Meanwhile i run free command to check the RAM,... (5 Replies)
Discussion started by: Vishal Gangrade
5 Replies
LEARN ABOUT OSX
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)