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Weblogic High Cpu Usage


The CPU usage should not rise because of this. Implement mechanisms that provide performance metrics which you can compare against your performance objectives, allowing you to schedule a tuning phase before your system fails. I am able to take thread dump using JSTACK 2. Secnario-2). have a peek here

Recently we worked on couple of customer escalations where we have extensively used Java Mission Control to resolve high CPU problems. This can be due to many reasons: WebLogic Server itself, user created threads, bad coding practices, or 3rd party software. Basically Solaris or VMWare? Keeping windshield ice-free without heater more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / http://blog.csdn.net/zhouleiblog/article/details/21236091

Java Process Taking Too Much Cpu

This will give you the stacktrace of the thread that is causing the High CPU issue. Find the thread id in the WLS process that is using the most CPU via ps -eLo pid,ppid,tid,pcpu,comm | grep . problem description A system administrator notices that the WebLogic Server process is consuming a lot of CPU cycles and wants to know why/what is consuming CPU cycles. Run pc windows program on Linux running thru harddrive?

Copyright © 2017. jps: to know How to use JPS utility please refer to : http://middlewaremagic.com/weblogic/?p=2291 2). Simply put, good system performance depends on: good design, good implementation, defined performance objectives, and performance tuning. Your target CPU usage should not be 100%, you should determine a target CPU utilization based on your application needs, including CPU cycles for peak usage.

Once you have stack strace of the threads which are causing the high cpu/slow performance , u can see who is causing the issue ,may be a bad app code, third Gc Worker Thread High Cpu Some of the disk bottlenecks for application server disks are: Persistent Store writes Transaction logging (tlogs) HTTP logging Server logging The disk I/O on an application server can be optimized using However, the UNIX and Linux operating systems usually need to be tuned appropriately. Homepage Tags: weblogic.socket.NIOSocketMuxerweblogic12c Add new comment Your name E-mail The content of this field is kept private and will not be shown publicly.

Keep Posting 🙂 Thanks Jay SenSharma Log in to Reply sathya December 15th, 2010 on 2:22 am Awesome Jay!!! For this purpose we are going to use 2 very basic utilities . 1). Authentication Error for ABBY Ocr Sdk! top command -> to know the high CPU consuming process.2.

  • The "Top 5"-list will give you pointers to start looking deeper from. –grassroot Jan 26 '13 at 16:44 Solaris zones.
  • Rajasekhar Reddy Naredlabefore restarting the server we need verify the below tings. 1.
  • For example, resource contention could be a case of poor design, rather than inherent to the application domain.
  • What kind of capacity you have in the servers?
  • Difference between 8 9 10 versions Difference between Queue and Topic: Deployment Staging Modes Configure Apache with Weblogic Server JVM Basic Idea Http Error Codes Exception , Issues with Weblogic Server
  • It's a use case i found on the web few months ago (maybe on middleware magic) merely explaining the same thing about this page.
  • During the problem create 2-3 thread dumps with pkill -3 java.

Gc Worker Thread High Cpu

Homepage Subject Comment * More information about text formatsPlain textNo HTML tags allowed.Lines and paragraphs break automatically. This is the error and cause of the High CPU in this example. Java Process Taking Too Much Cpu Tip: Even if you find that the CPU is 100 percent utilized, you should profile your application for performance improvements. Weblogic Performance Monitoring Right click and go to properties Step 3:- Go to threads tab and check for the “TID” consuming high CPU usage.(TID 3968, 4464, 4456, 2196) Step4:- At the same time,

HomeTroubleshootingHigh CPU Usage of WebLogic Server on Linux High CPU Usage of WebLogic Server on Linux Faisal May 5, 2014 Troubleshooting 2 Comments Tweet Pin It If you observe CPU being navigate here Please drop a mail @ [email protected] WebLogic Wonders Log in Entries RSS Comments RSS WordPress.org Middleware wonders!! The process of determining what type of hardware and software configuration is required to meet application needs adequately is called capacity planning. For e.g. Jstack

Step-4). asked 3 years ago viewed 4080 times active 3 years ago Related 2High CPU usage - symptoms moving from server to server after bouncing1Is there a difference between starting a WebLogic Solaris Run the prstat command on the Java process. http://1pxcare.com/high-cpu/wmiapsrv-exe-high-cpu-usage.html Articles(27) GoldenGate Solutions(23) ODI(38) Enterprise Manager(10) Exalogic(53) Architecture(7) Exalogic A-Team Tools(6) Hardware(12) Operating Systems(19) Software(22) Tips and Tricks(32) Fusion Applications(148) Architecture(29) BI/Reporting(33) Diagnose and Troubleshoot(18) E-Business Suite(7) Extend and Customize(20) Install

by Jay SenSharma under Debug, JVM Tuning, Monitoring BufferEmailPrintHi All, Jay SenSharma High CPU utilization is a very very common thing for an Application Server Administrator. This maps to nid=0x4c in the JVM thread dump: "Thread-6" prio=5 tid=0x1e2fd8 nid=0x4c waiting on monitor [0xe2e81000..0xe2e819d8] at java.lang.Thread.sleep(Native Method) at weblogic.management.deploy.GenericAppPoller.run(GenericAppPoller.java:139) In this example, the thread using the most CPU Why leave magical runes exposed?

If you are keep on getting that Heap is filled up to 95% (Even after the full Garbage collection) then it is an indication that very frequently your application is demanding

My test case simulates high CPU usage every few minutes as shown below. Apache Camel based EJB Client accessing the EJBs deployed on WebLogic 12c Recent CommentsJay SenSharma on About UsNoor on About UsJay SenSharma on JMSamkrishna333 on JMSJay SenSharma on How to get Once you have stack strace of the threads which are causing the high cpu/slow performance , u can see who is causing the issue ,may be a bad app code, third When you open the JFR file in Java Mission Control, your initial screen will look like as below.

Now convert those PIDs into Hexadecimal values…..Example     the Hex Decimal Value for     5522 will be      1592. Note the thread id that consistently shows the highest value for pcpu. Step3 :- Examine the pstack output for lwp# 8. this contact form Step1: The following is an example of the above process for Solaris.

Unfortunately, proving where this happens can sometimes be difficult. Run the below command to see which threads in the JVM's are using high cpu/slow performance,top -Hp Note the thread id's which are causing more cpu usage or slow performance3. jstack: to know how to use jstack please refer to : http://middlewaremagic.com/weblogic/?p=2281 Generating High CPU Step1). why does the problem occur?

But it would be best if you can enable the Garbage Collection Logging on your Server's JAVA_OPTIONS sothat we can get to know where exactly is the problem. Step8). Fill in your details below or click an icon to log in: Email (required) (Address never made public) Name (required) Website You are commenting using your WordPress.com account. (LogOut/Change) You are Performance objectives are limited by constraints, such as The configuration of hardware and software such as CPU type, disk size vs.

And when I investigated the thread dump I found this: "ExecuteThread: '0' for queue: 'weblogic.socket.Muxer'" daemon prio=10 tid=0x00007fe20c420000 nid=0x58dc runnable [0x00007fe25c66d000] java.lang.Thread.State: RUNNABLE at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269) at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:79) at Redistribution not allowed without written permission Filed Under: Diagnostics, Java, WebLogic Server Tagged With: Java, Mission Control, weblogic Add Your Comment Cancel replyYou must be logged in to post a comment. Do you have Sar-statistics available of the situation? Optimize your Java code.

Why does the U-2 use a chase car when landing? Achieve Performance Objectives Performance tuning is an iterative process. Please refer to the following article: http://middlewaremagic.com/weblogic/?p=6016 Please refer to the following section : Watching and Notifying . . Also, confirm whether there are too many ORDER BY clauses used in your application that are affecting the database CPU.

Measure Your Performance Metrics After you have determined your performance criteria in Understand Your Performance Objectives, take measurements of the metrics you will use to quantify your performance objectives. com.ateam.LongRunningEJB.threadCalc(int) Now let's look at my code snippet that's causing the high CPU public void threadCalc(int seconds) { double start = 0; long t0 = System.currentTimeMillis(); while (((System.currentTimeMillis() - t0) / See Setting TCP Parameters With the ndd Command. Take several thread dumps of the WebLogic Server process via kill -3 .

Now In Parallel to collecting the Thread Dumps please collect the "top" commands output as well….like (NOTE: Make sure that u collect the Thread Dumps and the Top commands results in debugging, JVM Tuning, JVM Utilities, Monitoring 18 Comments for this entry sohel07 December 11th, 2010 on 7:24 am Hi Jay, Excellent Sir… If you can teach us also how to analyze