A probléma:
OpenStreetMap.org is primarily run on actual physical hardware that our team manages. We attempt to squeeze as much performance from our systems as possible, with some services being particularly I/O bound.
We ran into some severe I/O performance issues with kernels ~6.0 to < ~6.6 on systems with NVMe storage. This pushed us onto newer mainline kernels, which led us toward Debian. On Debian 12 we could simply install the backport kernel and the performance issues were solved.