ArcGIS Pro layer add performance issue

Jean-PaulLavoie1 — Thu, 09 Mar 2017 19:24:01 GMT

I am having a performance issue with ArcGIS Pro (1.4). I need to create a map programmatically that contains about 50 layers.

The tests were performed under Windows 10 Pro via VMware running on a Macbook Pro with an i7 @ 3.10 ghz. The tests were repeated when the VM was set up with 4gb, 8gb, and 12gb allocated ram with no appreciable difference. The layer being added is a polyline spatial type. The test was run with a feature class containing 1188 features and again with a feature class containing 81267 features also with no appreciable difference. The layer is file geodatabased and is on the local drive.

I ran the code sample below in VS2015 six times with the loop count changed and successive uncommenting of the tests:

Test 25 layers ms 50 layer ms

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

1: CreateLayer only: 8905 16990

2: CreateLayer + FeatureLayer: 8998 16817

3: CreateLayer + FeatureLayer + Selectable: 11241 22149

// For demonstrating the ArcGIS Pro slow map layer creation issue. We are
// trying to create a map containing 50 layers. The test was run on Pro 1.4.
internal static async Task LayerPerformanceTest()
{
ArcGIS.Desktop.Mapping.Map map = null;
int ms = 0; // for performance test in milliseconds.
Task loadMap = QueuedTask.Run(() =>
{
// Create new map and set it's spatial ref.
map = MapFactory.CreateMap("LayerTest");
SpatialReference sr = SpatialReferenceBuilder.CreateSpatialReference(2227);
map.SetSpatialReference(sr);

// Create a grouplayer to contain the newly created layers.
GroupLayer groupLayer = GetOrCreateGroupLayer(map);

// Append the same layer 50 times.

string url = "c:\\Data\\COA\\FeatureEsri\\CadasterCogo.gdb\\ASR_RowLine";

DateTime dt1 = DateTime.Now;
for (int i = 0; i < 50; i++)
{
// Test 1:
LayerFactory.CreateLayer(new Uri(url), groupLayer, 0, "Layer " + i.ToString());
// Test 2, add:
// FeatureLayer featureLayer = groupLayer.Layers[0] as FeatureLayer;

// Test 3 add:
// var cimFeatureDefinition = featureLayer.GetDefinition() as ArcGIS.Core.CIM.CIMFeatureLayer;
// cimFeatureDefinition.Selectable = false;
// featureLayer.SetDefinition(cimFeatureDefinition);
}

DateTime dt2 = DateTime.Now;
TimeSpan span = dt2 - dt1;
ms = (int)span.TotalMilliseconds;
});

// Wait (not blocking) until the task is done. (loadMap.Wait() blocks).
await loadMap;

// Add the new map to the panes collection.
var newPane = await ArcGIS.Desktop.Framework.FrameworkApplication.Panes.CreateMapPaneAsync(map);
}

Re: ArcGIS Pro layer add performance issue

NarelleChedzey — Thu, 23 Mar 2017 23:19:55 GMT

Hello,

Thank you for your post. I have used your code in an ArcGIS Pro add-in and reviewed the performance. I used a polyline feature class from a file geodatabase containing approximately 8300 features - appending it 50 times to a group layer within a new map. Whilst I was not able to exactly duplicate your results, I did see some causes for concern in the performance.

I performed the test on both ArcGIS Pro 1.4.1 and our soon-to-be-released 2.0 version. There are some performance improvements in 2.0 over 1.4.1 (about 20% faster in my testing scenarios).

Additionally, there are 2 improvements you can make in your code. Specifically change your loop to be the following

for (int i = 0; i < 50; i++)

{

FeatureLayer featureLayer = LayerFactory.CreateLayer(new Uri(url), groupLayer, 0, "Layer " + i.ToString()) as FeatureLayer;

featureLayer.SetSelectable(false);

}

1. By using the return value from LayerFactory.CreateLayer you can avoid the (admittedly small) time required to access the layer from the map.

2. Casting this return value to a FeatureLayer and then using the SetSelectable function minimizes the traffic between the managed and native tier of the application code to a single call. This is preferable and better than the GetDefinition, SetDefinition functions which will message between the managed and native tier twice.

I expect you will see some improvements, mostly as a result of the second change, especially as that occurs within the 50x loop.

I have also passed this item to the appropriate testing and development teams for further investigation. Should I receive any further information I will post it here.

Regards

Narelle Chedzey

SDK Team

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ArcGIS Pro layer add performance issue

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