 WSL2 settings can be tweaked by the "WSL global configuration", contained in an INI file named codice_6 in the User Profile folder.The distribution installation resides inside an ext4-formatted filesystem inside a virtual disk, and the host file system is transparently accessible through the 9P protocol, similarly to other virtual machine technologies like QEMU.For the users, Microsoft promised up to 20 times the read/write performance of WSL 1.