Sponsored Content
Operating Systems HP-UX How to increase JVM memory in HP UX Post 302435085 by vbe on Tuesday 6th of July 2010 10:45:27 AM
Old 07-06-2010
moved to more suitable forum...

---------- Post updated at 16:38 ---------- Previous update was at 16:27 ----------

HP-UX performance tuning Java? (techniques, tools, and tips)
http://docs.hp.com/en/JAVAPERFTUTOR/...s_HPjmeter.pdf

http://download.oracle.com/docs/cd/E...rm/topten.html
Top Tuning Recommendations for WebLogic Server

---------- Post updated at 16:39 ---------- Previous update was at 16:38 ----------

What version of OS?

---------- Post updated at 16:45 ---------- Previous update was at 16:39 ----------

Get hpjconfig:
https://h20392.www2.hp.com/portal/sw...mber=HPJCONFIG

My first impression is, that some of the kernel parameters might be set too
low (max_thread_proc). So please execute hpjconfig, and set the kernel
parameters according to the suggestions of the program.
 

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Opinions on memory increase

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

Increase memory allocation for apache

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

need to increase the memory utlisation of server

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

jvm memory settings

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

How to increase jvm size for solaris 10 (sparc) operating system

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

To find JVM memory usage in shell console

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

JVM Memory used on AIX

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

JVM Memory

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

Default JVM Memory

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

JVM processes are not getting memory allocation as soon as started

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
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)
All times are GMT -4. The time now is 11:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy