[Version 5.0.1 and later]Monitoring performance

Why and when to perform this task

WebSphere for z/OS always collects certain performance data on z/OS which is available through the facilities of z/OS operating system which includes RMF data. Workload Management (WLM) delay monitoring is always enabled for WebSphere for z/OS. The Performance Monitoring Infrastructure (PMI) data is a non-platform specific WebSphere set of API's to do performance monitoring. The System Management facilities (SMF) interface is a z/OS platform way of collecting performance and accounting information. The PMI and SMF data are each individually configurable and need to be enabled. WebSphere for z/OS relies on its use of WLM services to collect some of the accounting and performance data. This information gets presented back to the installation through RMF and RMF-written SMF records. See Collecting job-related information with Systems Management Facility (SMF).

WebSphere Application Server collects data on run time and applications through the Performance Monitoring Infrastructure (PMI). Performance data can then be monitored and analyzed with a variety of tools.

To set up performance monitoring:

Steps for this task

  1. Setup workload management as described in Setting up workload management (WLM). Also see Workload management (WLM) tuning tips for z/OS.
  2. Enable PMI services in the application server as described in Enabling performance monitoring services in the application server through the administrative console.
    To monitor performance data through the PMI interfaces, you must first enable the performance monitoring service through the administrative console before restarting the server.
  3. Collect the data.

    The monitoring levels that determine which data counters are enabled can be set dynamically, without restarting the server. You can set these values in one of the following ways:

    1. Starting the Tivoli Performance Viewer.
    2. Enabling performance monitoring services using the command line.

    For WebSphere for z/OS, also refer to Collecting performance diagnosis information.

What to do next


Related concepts
Performance information and accounting for WebSphere Application Server for z/OS
Performance Monitoring Infrastructure
Performance Monitoring Infrastructure Request Metrics data output
Related tasks
Performance monitoring service settings
Configuring the dynamic cache service to improve performance
Related reference
Performance data organization
Performance data classification
Collecting job-related information with Systems Management Facility (SMF)
Collecting performance diagnosis information
Performance: Resources for learning



Searchable topic ID:   tprf_entrypoint
Last updated: Jun 21, 2007 9:56:50 PM CDT    WebSphere Application Server for z/OS, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.websphere.zseries.doc/info/zseries/ae/tprf_entrypoint.html

Library | Support | Terms of Use | Feedback