Difference between revisions of "SUNScholar/Optimisations"
Jump to navigation
Jump to search
| Line 23: | Line 23: | ||
*http://www.yourkit.com | *http://www.yourkit.com | ||
| − | ==Tomcat== | + | ==[[SUNScholar/Optimisations/Tomcat|Tomcat]]== |
| − | + | Click on the heading above. | |
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
| − | |||
==[[SUNScholar/Optimisations/Logs|Reduce system log sizes]]== | ==[[SUNScholar/Optimisations/Logs|Reduce system log sizes]]== | ||
| Line 37: | Line 31: | ||
==[[SUNScholar/Optimisations/Error Logs|Email error logs]]== | ==[[SUNScholar/Optimisations/Error Logs|Email error logs]]== | ||
Click on the heading above | Click on the heading above | ||
| + | |||
==XMLUI== | ==XMLUI== | ||
*Use XMLUI exclusively to reduce the memory load. | *Use XMLUI exclusively to reduce the memory load. | ||
Revision as of 12:45, 27 January 2014
Back to After Installation Tasks
Contents
Introduction
This wiki page details the major optimisations of the system performed at Stellenbosch University in order to create a truly production optimised version of DSpace.
Java
Setup custom java environment parameters. See link below.
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Prepare_Ubuntu/S08
Perform Java profiling to find memory and CPU intensive code.
Information
- http://en.wikipedia.org/wiki/Java_performance
- http://en.wikipedia.org/wiki/VisualVM
- http://en.wikipedia.org/wiki/Java_Development_Kit
- http://en.wikipedia.org/wiki/OpenJDK
Tools
- http://java-source.net/open-source/profilers
- http://www.infoq.com/articles/java-profiling-with-open-source
- http://theholyjava.wordpress.com/2012/02/25/profiling-tomcat-webapp-with-visualvm-and-netbeans-pitfalls
- http://java.dzone.com/articles/pitfalls-experienced-when
- http://docs.oracle.com/javase/6/docs/technotes/guides/visualvm/profiler.html
- http://www.yourkit.com
Tomcat
Click on the heading above.
Reduce system log sizes
Click on the heading above.
Email error logs
Click on the heading above
XMLUI
- Use XMLUI exclusively to reduce the memory load.
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Install_DSpace/S08
Database
- Fix "browse index" configuration to reduce the PostgreSQL database server query load.
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Indexes#Browse_Indexes
Vacumn the database regularly
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Daily_Admin#.22postgres.22_crontab
Bitstream checker
Modified bitstream checker settings as follows to reduce database size.
#### Checksum Checker Settings #### # Default dispatcher in case none specified plugin.single.org.dspace.checker.BitstreamDispatcher=org.dspace.checker.SimpleDispatcher # check history retention checker.retention.default=1y checker.retention.CHECKSUM_MATCH=2w
- References
Monit monitor service
In case the Tomcat service halts or hangs due to whatever... , I installed monit to restart the service and then alert me. See an example of my config below.
dspace@ir1:/etc/monit$ sudo cat /etc/monit/monitrc
set daemon 60
set logfile syslog facility log_daemon
set mailserver localhost
set mail-format { from: XXXX@XX.XXX.XX.XX }
set alert XXXX@localhost
set httpd port 2812
allow %user%:%password%
check process sshd with pidfile /var/run/sshd.pid
start program "/etc/init.d/ssh start"
stop program "/etc/init.d/ssh stop"
if failed port 22 protocol ssh then restart
check host sunscholar with address scholar.sun.ac.za
start program = "/etc/init.d/tomcat6 restart"
stop program = "/etc/init.d/tomcat6 stop"
if failed port 80 proto http then restart
alert XXXX@XXX.XX.XX
alert XXXX@XXX.XX.XX
All confidential information has been replaced with % signs or captial X's.
