WLMTK Overview: Using HP-UX WLM Effectively With Your Most Critical Applications

Example configuration files

ApacheTK provides example configuration files for WLM, as well as Apache in some cases:

• apache_vs_oradb.wlm—WLM configuration file that demonstrates separating an Oracle database

instance workload from Apache and its children

• apache_vs_batch.wlm—WLM configuration file that demonstrates separating a batch job workload

from Apache and its children

• apache_vs_single_cgi.wlm—WLM configuration file that demonstrates separating a single, resource-

intensive CGI workload from Apache

• apache_vs_tomcat.wlm—WLM configuration file that demonstrates separating the Tomcat Java

Virtual Machine (JVM) from Apache

• apache1_servlet_vs_apache2_ssl.wlm, apache1_servlet_vs_apache2_ssl.conf—Apache and WLM

configurations to support two separate Apache instances, one running Tomcat workloads and one

running mod_ssl

• apache_2mods_rewrite.wlm, apache_2mods_rewrite.conf—Apache and WLM configurations to

support two separate Apache instances, each running different mod_* (module-based) workloads in

a workload

• apache1.split—File that starts and stops separate Apache instances for the

apache_2mods_rewrite.wlm configuration

• apache_single_servlet.wlm, start_servlet_jail.sh, stop_ servlet_jail.sh—Apache and WLM

configurations to support running a specific, resource-intensive servlet in a second copy of Tomcat

• apache_resptimes.wlm—WLM configuration file that supports managing an Apache instance by

URL fetch response time

HP-UX WLM WebLogic Toolkit

HP-UX WLM BEA WebLogic Toolkit (WebLogicTK), combined with WLM, enables you to manage and

prioritize WebLogic Server workloads.

Why use WebLogicTK?

Using WLM with WebLogicTK, you can move CPU resources to or from WebLogic Server instances to

maintain acceptable performance. When the instances’ CPU resources are managed by WLM, the

instances tend to use less net CPU resources over time. You can then use the additional CPU resources

for other computing tasks.

Tools in WebLogicTK

WebLogicTK includes a white paper and example configuration files that demonstrate resource

separation of WebLogic-based workloads. WebLogicTK also includes the data collector wlmwlsdc,

which tracks metrics for WebLogic instances. Finally, WebLogicTK provides the expsmooth utility for

smoothing values from WLM data collectors by computing a running average in which the importance

of old values diminishes over time.

How WebLogicTK works

The WebLogicTK data collector, wlmwlsdc, enables you to track metrics indicating how busy

WebLogic Server instances are. You then use those metrics to create SLOs that adjust the CPU

allocations for the associated workloads.