Layer Performance

If a layers are taking a long time to load or render, the following issues may apply.

Server Capacity

Use the server’s performance monitoring tools to determine if the server is under load. If CPU is constantly under load, look at what services are running on the server. Anti-virus and other services may be consuming CPU and memory.

WFS Layers

Layers that are enabled for WFS are loaded by the Pozi app in full. This includes every feature, every geometry in its raw, unsimplified form, and every attribute.

When layers take a long time to load, the following issues may apply:

• The layer has a large number of features
• The layer has complex geometries
• The layer has a large number of fields

If you suspect that any of these could be contributing to slow loading, consider using WMS for your layer. If you disable WFS, Pozi will instead use WMS, utilising QGIS Server to render the layer for the current map view without loading the entire dataset.

See WMS vs WFS.