Use the Performance tool to understand the system resources consumed by processing a single requestor session, or the SQL statements sent by the requestor session to the PegaRULES database.
Pega Platform always accumulates cumulative resource statistics for the Performance tool. Use the tool to display these statistics, and to identify incremental resources (in the delta rows) consumed by your processing. Because this feature displays existing data, its use does not degrade processing.
Using this data, you can assess possible sources of improved performance (faster response time or higher throughput) through software changes, hardware changes, or rule changes.
As Pega Platform operates, it collects statistics about the demands made on processing resources, and the server system's response. The Performance tool summarizes and formats these statistics and presents them as HTML pages.
Performance data shows the processing demand statistics of your work since you connected, and may help you assess the performance impact between different approaches or configuration choices.
The DB Trace facility records SQL interactions between your Pega Platform session and the PegaRULES database.
Performance statistics can help you distinguish between performance issues that arise in the Pega Platform server, the PegaRULES database, or external systems called by the workflow. In all cases, the statistics can help you determine how to improve performance.
Use these links at the top of the summary display:
For each summary row, many more statistics are available on the full detail page. To see full details, click the Full or Init link on a row.
The basic statistics display has three or four rows. On the initial display, statistics in the row labeled Full match those in the bottom row.
As you interact with Pega Platform, the statistics change to reflect the results of each interaction.
Label |
Description |
|
full |
Statistics in the top row reflect totals since your session started, or since the most recent Reset Data operation. |
|
(none) |
The second row provides labels for the columns. |
|
delta |
Delta rows appear as you interact with Pega Platform. Each row shows values from a single interaction. |
|
init |
The bottom row shows the totals when this Performance display first appeared. |
Columns of the display identify these counts and timings. The table below describes returned data. All CPU time is in milliseconds. The properties are stored in the PALPhase clipboard page, and are in the Code-Pega-PAL class.
The number of decimal places in timing results depends on the hardware and software in use. In general, the decimal values shown are significant. Measurement values are since log-in, or since the last Reset, or incremental between rows, depending on the row label.
Label |
Description |
| Int # |
Sequence number of the most recent completed interaction. |
| Int Count |
Total number of interactions. |
| Total Elapsed |
Total elapsed time for this interaction. |
| RA Elapsed |
Rules assembly elapsed time. |
| Rule I/O Elapsed |
Elapsed time spent finding rules. |
|
RDB I/O Elapsed pxRDBIO |
Elapsed time executing SQL operations against the PegaRULES database; excludes Connect SQL executions for the PegaRULES database or external databases. |
|
Connect Elapsed pxConnectElapsed |
Time spent waiting for an Connect rule execution to an external system . |
| Other I/O Elapsed |
Elapsed time accessing non-rule-resolved instances from the PegaRULES database plus elapsed time retrieving non-rule database lists. |
| Total CPU |
Total CPU time used. |
| RA CPU |
CPU time spent assembling Java classes. |
| Rule CPU |
CPU time spent executing rules. |
| Other CPU |
CPU time excluding rules assembly CPU and Rule CPU. |
| RA Count |
Number of Java classes assembled. |
| Rule Count |
Number of times rules are found. |
| Activity Count |
Number of activities started by this thread, including activities where an exception occurred during execution. |
| Connect Count |
Number of connector attempts made to external systems. |
|
Other I/O Count pxOtherIOCount |
Number of times Pega Platform attempts to create lists from the database. |
|
Alert Count pxAlertCount |
Number of alerts created by your requestor session. |
| Total Bytes |
Total bytes of input and output. |
Click the INIT, FULL, or DELTA links to access the Full Details display for that row. This display provides additional statistics from the same snapshot.
For a description of the contents of that window, see Performance tool — Full Details Display.
When two instances of Pega Platform are installed on a single Windows server, some Performance tool statistics may not be available on the installation that is started second.