PHP's a pretty cool language, but it's got to have a lot of overhead in "stuff". Java seems to be the same way. IIRC, garbage collection is automatic. I bet that slows things down a bit.

COBOL doesn't do all that much for you, like garbage collection or figuring out memory allocation, right? My guess is it'd be right there with the fast languages. I don't remember how Ada handled memory, I'd think it could be faster like C++, but maybe part of it is C++ and C can use some optimizations the other languages can't.

The Orange Pis were the only ones dropping their connection. I wonder if they were at the edge of the AT&T gateway's range, which was pretty poor. They might have been disconnecting at random and I didn't notice because they didn't need to talk to the LAN once they started printing.

I've now got a different wireless router going and it does a great job. I get a better signal out in the shed than I did before and the router is about 30 feet farther away. It's also closer to the 3D Printers, so they'll probably stay happier.