“Slow” is when the human waits on the computer.
The promise of computing is that what was slow in the 1960s and 1970s would be instant in 1990. And those things were instant, but those things aren’t what people did with computers anymore.
New software that did more than before, but less efficiently, came around, so everything felt the same. Developers didn’t have to focus on performance so much, so they didn’t.
Developers are lazy sacks who are held skyward because of hardware designers alone. And software developers are just getting heavier and heavier all the time, but the hardware people can’t hold them forever.
This cannot continue forever. Run software from the 1990s or 2000s on modern hardware. It is unbelievably fast.
Maybe it was slow in the 1990s, sure. I ask why we can’t (or won’t) write software that performs like that today.
The compiler for Turbo Pascal could compile something like a million lines per second in 1990. We have regressed to waiting for 60+ minute C++ compile times today, on even moderate project sizes.
Debugging in visual studio used to be instant when you did things like Step Over. You could hold the Function key down and just eyeball your watch variables to see what was going on. The UI would update at 60FPS the entire time. Now if I hold down that key, the UI freezes and when I let go of the key it takes time to catch up. Useless. All so Microsoft could write the front end in dotnet. Ruin a product so it is easier to write… absolute nonsense decision.
All software is like that today. It’s all slow because developers are lazy sacks who will only do the minimum necessary so they can proceed to the next thing. I am ashamed of my industry because of things like this.