Performance problem

Hi,

I’m having a bit of a problem with the performance. I am receiving a lot of data and when I do that my cpu is at 100%.

I ran the Visual Studio performance profiler and it says that 90% of the load come from here:

public HidDeviceData Read(int timeout) if (IsConnected) <------------

And then 80% from here:

        NativeMethods.SetupDiGetDeviceRegistryProperty(deviceInfoSet,
                                                        ref devinfoData,
                                                        NativeMethods.SPDRP_DEVICEDESC,
                                                        ref type,
                                                        descriptionBuffer,
                                                        descriptionBuffer.Length,
                                                        ref requiredSize);

It seems like it is doing a lot of stuff while trying to find out if the device is still connected? Is it necessary to do all of that before every read?

Or did I missunderstand something?

[AdrianEggenberger]

I’ve seen that, but the HidFastReadDevice only provides fast read functions (as the name also implies). What I would need is a HidFastWriteDevice that provides fast write operations.

[amullins83]

The HidFastReadDevice class essentially replicates the HidDevice class but skips the IsConnected check. This is already part of the library, so I feel like we could close this issue if that solves your problem.