Model execution logs

AnyLogic automatically writes all essential statistics about the model execution in the log files. While the model runs, all information about agents, their parameters, movement, event occurrences, message arrivals, statechart, and flowchart activities, resource usage, etc. is written into the model execution log. See the detailed description of all standard AnyLogic logs here.

How-To video: Model execution logs

To make the model write information into the log, you have just to turn logging on.

Resources utilization log

Turning on logging

To set the model write information to the log

  1. In the Projects view, click the model's Database item.
  2. In the Properties view, expand the Log section, and select the option Log model execution.

Viewing the model execution logs

AnyLogic enables the user to see the logs in a common table form, using the built-in database table editor.

To view a log

  1. Stop the model execution and close the model window. It may take some time to dump the information and refresh the model tree in the Projects view.
  2. In the Projects view, expand the Database branch.
  3. Expand the Log item's branch in the tree. You will see the list of logs in the Log branch.
  1. Double-click the log to view its data. The log contents will be shown in the table form in the database table editor. AnyLogic logs are shown in read-only mode. You cannot modify the log data.

Disabling data collection for specific logs

If the simulation takes significantly more time with the logging being turned on, you can disable data collection for some logs that you do not need.

To turn off data collection for a log

  1. After you simulated your model at least once and got the logs collected, expand the Database branch in the Projects view.
  2. Expand the Log item's branch in the tree. You will see the list of logs in the Log branch.
  3. In the Projects tree, select the log you do not need, and select the I do not need this type of log checkbox in the properties.

AnyLogic logs description

Name of the log

Description

agent_messages_log

Log on all messages sent by agents.

agent_movement_log

Log on agent movement. The table stores agent's type, agent's name, movement speed (in meters per second), start and stop time of movement.

agent_movement_stats_log

 Log on all agent movement statistics. The table stores agent's type, agent's name, total distance covered (in meters), total time spent on covering the distance and the average speed (in meters per second).

agent_parameters_log

Stores initial values of parameters of all agents in the model.

agent_statechart_states_log

 Log on agent's transitions within its statechart. The table stores agent's type, its name, the name of the statechart, the state of the agent at certain time as well as the dates at which the agent entered and exited certain states of the statechart.

agent_statechart_stats_log

 Log on agent's transitions statistics. The table stores agent's type, its name, the name of the statechart, the state of the agent, the average and the total time (in seconds) that the agent spent in this or that state, and the number of entries made to a particular state.

agent_type_statechart_states_log

 Log on agent type's transitions statistics. The table stores agent's type, the name of the statechart, the state of the agent, the average, the total, the min and the max time (in seconds) that the agent spent in this or that state.

agents_log

 [for advanced users] The table stores the creation time (and optional destroy time) of all agents.

datasets_log

Data from all data sets and charts collected during the model execution. The data is logged only for the Data sets with the property Log to database selected.

Note that data sets and charts have limitations on the number of stored samples (defined with the parameter Keep / Display up to ... samples), so having set strict limitations, you may get the data set tails only.

events_log

The log contains information about all occurrences of events and dynamic events in the model.

flowchart_entries_log

Stores information on the time moments when agents and resources entered flowchart blocks.

flowchart_process_states_log

The statistics showing the time agents spent in different states of flowchart blocks: waiting time (activity_type: WAIT), processing time (activity_type: WORK), and so on.

flowchart_stats_time_in_state_log

The aggregated statistics on time that agents spent in flowchart blocks.

Inside some blocks agent can be busy with several alternative activities. For instance, in Service block agent can wait, or it can be serviced. In the log, you will see two records for each Service, one for waiting time (activity_type: WAIT) and another for processing time (activity_type: WORK). Each record contains aggregated statistics on all agents that passed through the block: minimum, maximum, and total time in seconds, and the total number of processed agents so far.

From the following log, you can see, e.g. that the delay time of the block delayAuditKey is fixed (180 seconds), the mean waiting time for the printBill operation is 36,32 seconds, 25 bills have been processed at fixBillingErrors block so far, and so on.

fluid_rates_log

 Log on fluid rates within the flowchart. The table stores block's type, its name, port, the total amount of fluid passed through the port, the minimum, maximum, and average rate of the fluid.

fluid_storages_log

 Stores block types, the minimum, the maximum and the average amount of fluid (in cubic meters) that the each block type contained.

fluid_units_log

 Stores block types, the fluid amount and rate measurement units used in this or that block type.

fluid_utilization_log

 Stores block types, names of the blocks and the block utilization ratio.

histograms_log

Data from histogram data elements collected during the model execution. The data is logged only for the Histogram Data with the property Log to database selected.

library_block_parameters_log

 Stores initial values of parameters of all flowchart blocks in the model.

library_blocks_log

 [for advanced users] The table stores time moments when the flowchart blocks were created.

resource_pool_task_stats_log

 Stores the type of resource units for a certain resource pool, the name of the resource pool, the carried out task, the mean and total time (in seconds) spent on the task, and the total number of completed tasks.

resource_pool_utilization_log

 Log on resource pool utilization. The table stores the name of the resource pool, the utilization ratio and the quantity of resource units involved.

resource_unit_states_log

 Stores information on states of the resource units.

resource_unit_task_stats_log

 Log contains statistics on tasks of the resource units. The table contains type of resource units for a certain resource pool, the name of the resource pool, the resource unit ID, the carried out task, the mean and total time (in seconds) spent on the task, and the total number of completed tasks.

resource_unit_utilization_log

 Log on resource unit utilization. The table stores the type of the resource unit, the name of the resource pool, the population the unit is a part of, unit's index and ID within this population, and the utilization ratio of this resource unit.

statechart_transitions_log

Stores information on statechart transitions trigger moments.

You can log the information only for selected statecharts. To enable logging for a statechart, set the option Log to database for its statechart entry point.

statistics_log

Data from all statistics elements, collected during the model execution. The data is logged only for the Statistics with the property Log to database selected.

trace_log

 Stores all text outputs the user did by calling the traceToDB() function.

Each predefined log requires some particular raw data to be collected. In the Projects tree, you can see them in the Raw data branch of the database's Log. The more logs you need, the more related raw data will be collected.

Creating your own logs

Each log is in fact AnyLogic database view. If you want to create a similar log, you can create a copy of the predefined AnyLogic log, and modify its SQL query.

To create your own log based on a predefined log

  1. Click the log in the Projects tree to open its properties.
  1. In the Properties, click the link Create an editable copy of this view.
  2. In the Projects view you will see a new database view created. It will be put in the Database branch, but not in the Log branch (where only AnyLogic predefined and non-editable views are placed).
  1. The SQL query of this view is editable, so you can open the new view properties and customize its query as you need in the View definition field.

Deleting the log

The log is stored in the model folder, in the subfolder database storing all the data for the model's built-in database.

In some cases you may want to delete the log. For instance, you are distributing your model by copying the model folder, and want to optimize the folder size. You should not delete the files in the file manager, because this will delete all the input and output data from the model database. To delete just the model execution logs, please follow this way:

To delete all model execution logs

  1. In the Projects view, right-click the Database branch, and choose Delete log from the context menu.