NTFS is just slow for accessing lots of files in a short amount of time. That was a tradeoff that was made intentionally, and it won't go away until you use another filesystem for your boot volume. ReFS is apparently going to be an option for this sometime soon.
there are other ways to get files from A to B. consider backing up to the local network rather than the host Windows machine, maybe. I don't know.
another option may be to mount your home directory from another host.
that may not suffice if you're doing a lot of windows interop I suppose. once in WSL I tend to stay there, and not do much related stuff in Windows, and I just tar & gz the home directory and put it on a flash drive when I want to back it up.
> you're obviously not familiar with 9p, so ill restate my original question.
you're obviously not familiar with the term "restate." statements are restated, not questions. also, if you say you're going to ask again, you should actually ask again...
[let's pretend you asked again and that I quoted you here.]
how does one make anything slow? poor implementation, throttling, bugs, etc.
if 9p is just raw bytes over the wire then you tell me how it could be so slow. you seem to know the answer and you're clearly playing manipulative games by asking what you're asking. going out of your way to make yourself feel superior to a few words on a website.
people here are saying it's slow. you're asking how it could be. I'm gesturing vaguely at the thing saying "this is how, apparently."
stop being an ass and either participate in the conversation or leave the conversation.
ReFS is not a new term for most Windows admins or people who follow what MS is doing, but I didn't think that someone might misinterpret that name. Thank you.