konimarti

I looked into this a few years back and I think I stumbled over the same problem as you that some COM calls with go-ole are not supported, at least...

@alexlev2004 Thanks. A while ago, I looked quickly into the subscription model as well and made the same observations as you did: the bottleneck seems to be go-ole. You can,...

Yes. Enhancing go-ole would be the place to start. And correct, the proposed solution emulates the subscriber on the client side which is admittedly a less elegant solution. However, in...

> there doesn't seem to be a way to read from device, can you confirm this? This is correct. Currently, the read routine has OPCCache hard-coded: https://github.com/konimarti/opc/blob/master/connection_windows.go#L312 Patches are welcome...

Thanks! Yes, I agree it's a good idea to bump the minimum go version and update the package dependencies. However, I don't think that the error reported is related to...

Mhh. I can only reproduce your error when running with the wrong architecture. In your stacktrace, there's also a reference to `D:/software/go/src/runtime/asm_amd64.s` file, that's why I assumed you are using...

Have you compiled the binary with GOARCH=386?

A good reference is the following book (in german): https://link.springer.com/book/10.1007/978-3-658-16728-8 Same author also published a paper about ROSE vs conventional Kalman filters [here](https://arxiv.org/abs/2108.11321). Hope this helps

ROSE = Rapid Ongoing Stochastic covariance Estimation