Performance settings suggestions

[DagUd]

Very nice project ! I'm testing this project with a Siemens plc. Is working correctly but the performance are slow on a I7 12700K with 32GB and quadro 2000 video adapter. Do you have some suggestion about freecad settings for improve performances ? Thank you

[heissgetraenk]

Fcmcua relies heavily on the recompute functionality of FreeCAD, which took most of the time of each update cycle in my testing. I have seen a lot of discussion about the performance of that mechanic, like this discussion on multithreading occ. I am hoping the performance will improve in future releases of FreeCAD.

Since the recompute is a CPU heavy task, you could look into the following:

• close all other programs that might consume CPU bandwidth (e.g. TIA Portal heavily relies on CPU as well, I think)
• keep your CAD assembly as simple as possible. Only include parts that absolutely need to be represented in your simulation. Remove all 'cosmetic' parts.
• Play with the polling rate: reduce it until it doesn't change the compute time anymore.
• For a more granular view of the recompute time: go into the Freecad/Mod directory, where Fcmcua installed into and find opc_cad_updater.py. In the updateCad() method: uncomment lines 29 and 50-61. Restart Freecad. Fcmcua now prints FreeCAD's recompute time to the output window of FreeCAD.

For reference: In my testing I had compute times of around 100ms or ~10 Fps of which the recompute command made up ca. 80ms.