Slow performance when working with VPN

[T-solidus-T]

Problem: Slow performance in functions like "Documentation on keyword hover" and interference with other extensions, for example with this extension to open files from the path of an include card "Open file https://marketplace.visualstudio.com/items?itemName=Fr43nk.seito-openfile"

Steps to reproduce

• Working with non local locations, i.e. network locations (through VPN).
• Have a bdf with multiple "include" cards (>500) (attached main dat and one of the bdf includes)
• Open and immediately right click -> open file under cursor (or try to obtain documentation on keyword hover)

• A message of "Activating extensions appears"

• Once the bdf is loaded, everything works fine, you can open all the includes quickly. But it takes some time to load the extension.

issue.zip

Info: VS Version: 1.85.2 OS: Windows_NT x64 10.0.19045

[dmarc3]

Hey @T-solidus-T,

Thanks for submitting this issue. I suspect the issue isn't actually related to using the VPN or the "Open File" extension you linked but actually due to the Include Hierarchy load process being slow for a really large model like the one you're working with. The first thing this extension does when activating is populate the Include Hierarchy, which can be expensive because it needs to loop through all files to find all of the includes and build the tree.

If you were to disable the "Open File" extension and try to open the file again with this extension, does it take just as long? Or if you were to comment out all of the includes except 50 or so, does it take just as long? Also, how large is your model in terms of DOF or size of all the files combined if you can say? I've been able to load models with +300,000 grids reasonably quickly but those models usually only have on the order of ~50 different include files, not +500.

P.S. Out of curiosity, are you using the Include Hierarchy functionality at all or do you prefer to use the "Open File Under Cursor" context menu? I was unaware of the "Open File" extension and might look into adding that feature here or linking it as a dependency. Thanks for pointing it out!

[T-solidus-T]

Hi,

Yes I guess that you are right. I didn't mean that the problem is the VPN or the "open file" extension themselves but that the issue only appears when I am not working in my local drive. So probably the "Include Hierarchy" feature is being slow as it needs to load all the includes. When I'm connected to the VPN, it takes a bit due to the network speed limitation. But I don't understand why the nastran extension is blocking other VS extensions, maybe VS cannot manage multiple extensions at once?

Answering your questions:

• If I disable "open file" extension I need to wait (30-60 seconds) to load the hierarchy, then I can open the include immediately. If I look for the include in windows explorer I can open the include immediately too.
• If I comment all the includes except 50 or so, it opens the include almost immediately (2 seconds), with 10 or so is immediate.
• It does not depend on the size of the model or the include.
• The "Include Hierarchy" is an awesome feature. I use it a lot when you are working a long time with the same model. But many other times, I open the main .dat (which I have opened thousands of times) and I go straight forward to a specific include. I do this way instead of navigating through folders, because it is much quicker with "open file" feature.

Maybe it would be great if we have an option to enable/disable "include hierarchy" loading, that I think it will solve all the problems, don't you think so?