Resolving a large topology issue in business service maps

Problem

There is a limit on the maximum number of CIs and connections to be displayed on the service map. When this limit is reached, the described error appears.

In Service Mapping and Event Management products, when opening topology map/manual service map of Business Service, you may experience a problem when instead seeing the map, the following error message appears: "Cannot display the map. Topology too large."

Solution

This section provides a procedure to verify whether the problematic map can be displayed by relaxing the maximum size limitations.

1. Enter sys_properties.list in the application navigator field.

2. Click New and create a new property with the following values:

   Name: sa.map.LIMIT_MAX_GRAPH_SIZE
   Type: true|false
   Value: false

3. Click Submit to create the property.

4. Navigate back to the problematic service map and verify whether the the map displays.

5. If the problem is solved, navigate back to sys_properties.list, and look up the recently created property by Name (sa.map.LIMIT_MAX_GRAPH_SIZE).

6. Change the property value to true.

   To have working service maps, ensure a more accurate configuration.

7. If you are on the Helsinki release:

   1. In a Chrome browser window, navigate to the problematic map.

   2. Open the developer tools.

      

   3. Choose Console tab.

      see attached image "Filter console chrome").

   4. Click the filter icon.

   5. In the filter input field, type nNodes.

      You should see the message SA_LOG:: MAP_PERF_DEBUG: nNodes: <number>, nEdges: <number>.

   6. Copy down the numbers for nNodes and nEdges.

8. Navigate to sys_properties.list and click New.

9. Create a new property with the following values:

   Name: sa.map.MAX_NODES_FOR_LAYOUT
   Type: integer
   Value: The value for nNodes + 1. (If not available, try the number 1000.

10. Click Submit.

11. Create another property with the following values:

    Name: sa.map.MAX_EDGES_FOR_LAYOUT
    Type: integer
    Value: The value for nEdges + 1. (If not available, try the number 10000.)

12. Click Submit.

13. Navigate back to the problematic map to verify whether the problem solved.