Insane number of files created per second

Again though, this isn't _about_ file creation, it's about metadata ops; file creation is a convenient way to exercise it, while also being relevant to some usages.

Grepping a tree for the first time today? Atime updates. "make clean" in a large repository? combinations of mtime and deletions. "apt-get upgrade" with a bunch of pending updates? Oh, you better believe there's a shittonne (SI technical unit) of file creations, fsyncs, mv's and other metadata updates.

It ends up being a major but sometimes hidden determinant of how fast you can get shit done.