Java High CPU usage

[Jacob]

Hello,

I installed DSpace 5.3, but when trying to access localhost:8080/jspui the Java Process goes far beyond 100% of the CPU.

attached the screen with the "Top" command.

Thank you,

Jacob

[Tim Donohue]

Hi Jacob,

Unfortunately, the top command won't provide us with enough information here.  Could you check your DSpace logs for any errors that may be occurring behind the scenes? Here's a guide for locating errors in logs: https://wiki.duraspace.org/display/DSPACE/Troubleshoot+an+error

Also, is the JSPUI actually loading successfully? Do you see anything, or is it throwing an error?  Please send any errors you are seeing to this mailing list and we'll see if we can help you resolve them.

Thanks,

Tim

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[Jacob]

Hi Tim,

No errors is displayed.

attached the log file.

Tks,

Jacob

[Tim Donohue]

Hi Jacob,

It might help us if you could describe your setup, and what you see when the Java Process goes to such a high level.

* What version of Java / Tomcat are you using?
* When the Java process uses a lot of CPU does the DSpace homepage still load?  Does it stay high forever? Or does it go down after a while?

Also, please check your Tomcat logs too, as it's always possible that errors are being logged there as well. Again, the Troubleshoot an Error guide details where to check: https://wiki.duraspace.org/display/DSPACE/Troubleshoot+an+error

Thanks,

Tim

[Jacob]

#./version.sh

Using CATALINA_BASE:   /usr/java/apache-tomcat

Using CATALINA_HOME:   /usr/java/apache-tomcat

Using CATALINA_TMPDIR: /usr/java/apache-tomcat/temp

Using JRE_HOME:        /usr/java/java-jdk

Using CLASSPATH:       /usr/java/apache-tomcat/bin/bootstrap.jar:/usr/java/apache-tomcat/bin/tomcat-juli.jar

Server version: Apache Tomcat/8.0.24

Server built:   Jul 1 2015 20:19:55 UTC

Server number:  8.0.24.0

OS Name:        Linux

OS Version:     3.10.0-229.11.1.el7.x86_64

Architecture:   amd64

JVM Version:    1.7.0_79-b15

JVM Vendor:     Oracle Corporation

The homepage never load and the process never down.

tks,

Jacob

[Tim Donohue]

Hi Jacob,

The problem may be Tomcat v8.  There have been others reporting issues with running DSpace on Tomcat 8.  This email thread describes some of the common issues (and fixes).  Another option is to try running DSpace on Tomcat 7 instead.  We are also working on fixing Tomcat 8 issues in a future release of DSpace (no exact timelines on that as of yet).

https://groups.google.com/d/msg/dspace-tech/_Ec2eZBWoj8/f_2jFYwEBwAJ

- Tim