SUNScholar/Optimisations

Introduction

This wiki help page assumes that you have used the three system setup procedures to install an Ubuntu server with DSpace software.

This wiki page details the major optimisations of the system performed at Stellenbosch University.

Tomcat

See: http://www.turnkeylinux.org/tomcat

• Remove "mod_jk", use "authbind" exclusively with no need of the Tomcat AJP connector in order to reduce the CPU load

http://wiki.lib.sun.ac.za/index.php/SUNScholar/Prepare_Ubuntu/S05

• Remove "development mode" of Tomcat by adding the following to the server context in order to reduce DNS lookups.

enableLookups="false"

XMLUI

• Use XMLUI exclusively to reduce the Java memory load

http://wiki.lib.sun.ac.za/index.php/SUNScholar/Install_Dspace/S08

Indexes

• Fix "browse index" configuration to reduce the PostgreSQL database server query load

http://wiki.lib.sun.ac.za/index.php/SUNScholar/Indexes#Browse_Indexes

Logs

• Changed all instances of "INFO" to "ERROR" in the following config file to reduce disk I/O and CPU load.

log4j.properties

References

• https://wiki.duraspace.org/display/DSDOC18/Performance+Tuning+DSpace

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