Advertisement

08.17.2008 at 06:56PM PDT, ID: 23655246
[x]
Attachment Details
[x]
The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

  • The Grade of the Solution
  • The Zone Rank of the Expert Providing the Solution
  • The Number of Author and Expert Comments
  • The Number of Experts Contributing
  • The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!
7.2

How does thread creation work on Linux, i.e JVM's Xss vs Ulimit -a ?

Asked by TenzingTech in Red Hat Linux, Linux, Linux Programming

Tags: , , ,

Hi All,
We were experiencing following errors on Tomcat logs
unable to create new native thread
java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start(Native Method)
After some research we figured out that we need to have an addition parameter 'Xss' to reduce the stack size so that JVM can create more threads. We are on JVM 1.4.2 and we specified Xss128k to the catalina options. But after even after that the error has re surfaced.

Researching further on this error, we found following link which says that " Xss:Some people have reported that it is necessary to change stack size settings at the OS level for Linux"
http://www.caucho.com/resin-3.0/performance/jvm-tuning.xtp

 i.e. when I do Ulimit -a

core file size        (blocks, -c) 0
data seg size         (kbytes, -d) unlimited
file size             (blocks, -f) unlimited
max locked memory     (kbytes, -l) unlimited
max memory size       (kbytes, -m) unlimited
open files                    (-n) 1024
pipe size          (512 bytes, -p) 8

stack size            (kbytes, -s) 8192

cpu time             (seconds, -t) unlimited
max user processes            (-u) 7168
virtual memory        (kbytes, -v) unlimited

So, How does this two relate - JVM's XSS vs Linux's Stack SIze ?

What do we need to do to fix this error : "java.lang.OutOfMemoryError: unable to create new native thread
        at java.lang.Thread.start(Native Method)"

Do we need to reduce stack size at Linux/OS level ??

Appreciate your help.

Thanks
Start Free Trial
 
Keywords: How does thread creation work on Lin…
Title
1 How to know if another JVM is running?
2 How to read core dump of JVM
3 JVM?
4 on jvm
5 JVM
6 jvm
 
Loading Advertisement...
 
[+][-]08.19.2008 at 05:28PM PDT, ID: 22265172

View this solution now by starting your 7-day free trial. Setting up your free trial is quick, easy, and secure. We will return you to this solution, unlocked, when you're done.

 

About this solution

Zones: Red Hat Linux, Linux, Linux Programming
Tags: RedHat, RedHat, 2.4.19 #8 SMP, JVM Xss vs LINUX Ulimit
Sign Up Now!
Solution Provided By: Nopius
Participating Experts: 1
Solution Grade: A
 
 
[+][-]08.19.2008 at 05:37PM PDT, ID: 22265203

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]08.19.2008 at 09:51PM PDT, ID: 22266255

Often, when Experts are collaborating with members who have asked questions, they will request additional information about the problem. Askers respond with an author comment like this one.

Start your 7-day free trial to view this Author Comment or ask the Experts your question.

 
[+][-]08.20.2008 at 04:33PM PDT, ID: 22274905

At Experts Exchange, members can ask their questions to thousands of technology professionals, also known as Experts. Experts compete and collaborate to answer those questions by leaving comments like this one.

Start your 7-day free trial to view this Expert Comment or ask the Experts your question.

 
[+][-]09.10.2008 at 08:51AM PDT, ID: 22439606

Experts Exchange has a courteous staff of administrators who help members get the most out of the website by means of administrative comments like this one.

Start your 7-day free trial to view this Administrative Comment or ask the Experts your question.

 
[+][-]09.14.2008 at 05:19PM PDT, ID: 22475168

Experts Exchange has a courteous staff of administrators who help members get the most out of the website by means of administrative comments like this one.

Start your 7-day free trial to view this Administrative Comment or ask the Experts your question.

 
[+][-]09.19.2008 at 06:02PM PDT, ID: 22527336

Experts Exchange has a courteous staff of administrators who help members get the most out of the website by means of administrative comments like this one.

Start your 7-day free trial to view this Administrative Comment or ask the Experts your question.

 
 
Loading Advertisement...
20080716-EE-VQP-32 / EE_QW_2_20070628