While you are at it, should this script be packaged for all operating systems, instead of residing in debian/additions/innotop/innotop of the source tree?

I remember looking at this script in the past, possibly related to MDEV-18582 when I was thinking of removing some parts of the SHOW ENGINE INNODB STATUS output, since the same information can be obtained via better structured interfaces. In the end, I decided to keep the output compatible with the script.

It would also be a good idea to test that the script can actually produce nonzero counters for everything. At least starting with MDEV-29694, the section 'Insert Buffers' should be useless.

In MDEV-21452 the SEMAPHORES section of SHOW ENGINE INNODB STATUS was intentionally left blank because innotop wants to find that section.

One thing that I was thinking Innotop should have (very) small test set that can assure that things like you describe can be tested and make work. I'll make first very small facelift and try to make this tool slowly better. If there is known problem please open new Issue and you can assign to me as there is small interest (I use this tool on openSUSE also) for this tool.

What is the status of mytop illuusio ?

Haven't check mytop lately and every repo I've encountered is like last commit from 6 years ago. Mytop and Innotop seems to be very different beasts.