Hello, my desktop Leap 15.1 system is installed on HDD, but I also mount a SSD,
connected via SATA.
When compiling software for freelance work on the SSD, the whole system hangs
(except the compiler): mouse hangs for long periods, cannot open Xfce menu,
cannot open terminal app. There are only short times when the system becomes
available.

By searching in the internet I found an advice to use 'noop' I/O scheduler
instead of 'deadline' (default for SSD in openSUSE), and this solved the
problem for me.

Here's what I did - in /etc/udev/rules.d directory I created a .rules file with
following contents (which applies to all SSD, while leaving HDD on 'cfq'
scheduler):

ACTION=="add|change", KERNEL=="sd[a-z]", ATTR{queue/rotational}=="0",
ATTR{queue/scheduler}="noop"

I wonder if it's possible to solve this problem for all future openSUSE users
by default?