[tracer4201]

How is performance? I used Windows subsystem for Linux a year or so ago. Using a package manager to pull down some dependencies, which should take on the order of tens of seconds took several minutes to complete. It was painfully slow.

[pknopf]

WSL2 now uses VM technology, so the performance is now a lot better.

[scruple]

Wow, that's a welcomed change for me. I was trying every 3-4 months to get WSL working as a suitable development environment. There was always _something_. Excited to try this out again when I have a free day on a weekend.

[panpanna]

WSL performance problems were mostly due to slow I/O.

How does virtualization fix that?

[pknopf]

Translating syscalls to the NT kernel is slower than running Linux with a virtual filesystem.

[panpanna]

But in the end, the virtual filesystem is backed up by done Windows storage?

[pknopf]

Idk, but Microsoft cites these differences for the performance improvement.

Maybe things can be speed up/cached when you are one-to-mapping the syscalls to NT kernel.

[BinaryIdiot]

WSL in beta was significantly faster than that. Not sure what was wrong with your install or if it was something else (apt-get has always been crazy fast for me).