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There are three different types of statistics: host, pico instance, and workflow.
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collects statistics from the different machines hosting a Platform or Execution Context, e g the load of the CPU or the number of context switches. This is called host statistics.
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CPU User Time - This value shows how much time was spent in non-kernel specific code. This value is displayed in percentage. 100% means that all processing power is spent. See CPU System Time as well.
CPU System Time - This value shows how much time was spent in kernel specific code, such as scheduling of different processes or network transfer. This value is displayed in percentage. 100% means that all processing power is spent.
Context Switches - The number of context switches per second. A context switch occurs when one process hands over information to another process. The more context switches, the less effective and scalable the system will be.
Swapped To Disk - The amount of data that was swapped out. A large value indicates that the system does not have enough RAM to manage the memory requirements of the different processes.
Swapped In From Disk - The amount of data that was read from swap.
Processes Waiting For Run - Shows how many processes that are waiting to run. A high number indicates that the machine is not fast enough to manage the load.
Processes Swapped Out - Processes that have been persisted in swap due to insufficient available memory, or due to aggressive management of the memory layer.
Processes In Sleep - The number of processes that are presently not doing anything.
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Every minute, collects memory information from the different Java processes defining the Platform and the Execution Context. This information shows how much memory is used and how much memory that is available for the running process
Used Memory - Shows the amount of memory currently allocated by the running process. As Java is a language utilizing garbage collection, this number may very well get close to the maximum memory limit without being a problem for the running process. However, if the amount of used memory is close to the maximum limit for a long time, the process needs more memory. This value is displayed in bytes. See the -Xmx and -Xms properties defined in the XML file defining the process.
Maximum Memory - Shows the amount of memory that the process can use. This value is displayed in bytes.
Process CPU Time - Shows the percentage of CPU time that has been used.
Open File Descriptors - This is a Unix measurement that enables you to create a statistical diagram over the number of open files during the last minute, hour, or day.
Garbage Collection Count - Shows the number of times the garbage collector has run since the last time statistics was collected.
Garbage Collection Time - Shows the amount of time the garbage collector has run since the last time statistics was collected. This value is displayed in milliseconds
Thread Count - Shows the number of allocated threads.
Workflow Statistics
collects statistical data that is sampled every 5 seconds as long as a workflow is being executed. This information includes:
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uses Java Management Extensions (JMX) to monitor MIM tree attributes in running workflows. For more information, refer to 7.3 Workflow Monitoring.
Viewing the System Statistics
To open the System Statistics, click the button in the upper left part of the Desktop window, and then select from the menu.
To display statistics in System Statistics, you will have to use the Search function, see the section below, Searching the System Statistics or for Import statistics, see the section below, Importing Statistics.
Searching the System Statistics
To search, either click on the Search button, or click on the Edit menu and select the Search... option to open the Search System Statistics dialog.
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View Mode | Specifies the type of statistics you want to view; host, pico instance or workflow. | ||||||||
Resolution | Specifies the time resolution to be used. There are three different time resolutions on which statistics are collected.
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Criteria | The Criteria settings are used for selecting which search criteria you want the displayed statistics to meet. The following criteria are available: Host - If this option is selected, the statistics originating from the host selected in the drop-down list will be displayed. Pico Instance - If this option is selected, the statistics originating from the pico instance selected in the drop-down list will be displayed. Workflow - If this option is selected, the statistics originating from the workflow selected in the drop-down list will be displayed. Period - If this option is selected, the statistics from the chosen time interval will be displayed. Either you can select one of the predefined time intervals; Last Hour, Today, Yesterday , This Week , Previous Week , Last 7 Days , This Month, or Previous Month , or you can select the option User Defined and enter the start and end date and time of your choice in the From and To fields.
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Options in System Statistics
When you have performed your first Search, see the section above, Searching the System Statistics, or for imported statistics, see the section below, Importing Statistics, System Statistics displays the statistical information.
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Minimum | Displays the lowest value that was sampled |
Average | Displays the average value that was sampled |
Maximum | Displays the highest value that was sampled |
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Exporting statistics may be useful for several purposes, for example if you want to share the statistical information with someone who do not have access to your system.
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In System Statistics, click the File menu and select the Export... option.
The Save dialog will open.
Browse to the directory where you want to save the file, enter a file name and click on the Save button.
The statistical information for the selected time period will be saved in *.zip format.
Tip title Hint! The export functionality can also be used for saving statistics on a regular basis, e g every month or every year, to use for comparison with current statistics.
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The Import functionality is used for importing statistics that has previously been exported in a system. When using the Import functionality you do not have to perform a search in order to display the statistics.
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In System Statistics, click the File menu and select the Import... option.
The Open dialog will open.
Browse to the directory where the *.zip file you want to import is located, select the file and click on the Open button.
The statistical information will now be displayed in System Statistics. The same search criteria that were set in the Search System Statistics dialog when the statistics was exported will be displayed.
The date information at the top of the dialog now displays the time interval for the imported statistics, and the text "Imported Statistics" will also appear in red beside the date information.
Disabling Collection of Statistics
You can disable collection of statistics on the Platform by setting the following Platform properties to false in platform.conf:
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