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Brand new, out of the box. It's been sitting here at 100% for 5 minutes.
Can somebody explain why Windows is so much slower than... basically every other OS? I mean, what does Windows-Update differently then a apt-get upgrade?
While I'm unsure of the actual reasons, the file system alone seems too be a pain.
Windows updates are kind of snapshots, they replace more files than necessary and keep the old files incase the update fails or you wish to roll back x update. Besides that you're also given new packages and features you never asked for, because Windows loves their guinea pigs and doesn't care if something breaks because of it.
Funny things that immutable OS like MicroOs or Silverblue do that 1000 times more efficiently and you can even continue usyn system normally. Update applies after reboot.
Windows is just a pile of crap put together with a duct tape and chewing gum. They did no significant progress in decades.
AFAIK the main reason is in how windows handles the filesystem - in linux everything is a file and all files are cached by default unless that memory is needed by default, so 100% memory utilization is the norm and where Linux operates most efficiently. In windows file caching seems architecturally be an after-thought and much less efficient - i.e. this causes handling a lot of files (like when updating the OS, where a lot of files need to be modified) to break the caching system and cause a lot of cache thrashing.
Arch: 30sec for update, 2min for full system upgrade
Kubuntu: 2min for update, 10min for full system upgrade
Windows: 5min for update, 30min for full system upgrade
Ubuntu: Please close firefox so i can install update. You closed it? Well... the update can wait.
Gentoo: 💀