Background process for low latency.

[donaastor]

I don't know if it is just my system that is bloated (uses some bloated component), but on my system every (GPU accelerated) terminal takes an awful second to open if none were already open at the moment. If one is already open, then the next one opens momentarily (not Alacritty though, but wezterm does). So my suggestion is why not make some background process that starts when you open wezterm for the first time and stays running even when you close all wezterm windows. That process would have everything loaded and ready so whenever you start a new wezterm process it can just borrow from the background all resources and instantly show up.

[donaastor]

I did a little bit of exploration:

There is already a command for the opposite: wezterm start --always-new-process.

After strace-ing wezterm, I have found that there exists a socket at /run/user/1000/wezterm/gui-sock-XXXXX which shares GUI processes. So, all we have to do is not actually terminating the process and the socket will stay and all subsequent invocations of wezterm will be instantaneous.