Checkmk 2.0 extremely slow

[andreas-doehler (Andreas)]

@bitwiz

… so it seems it might be a one-time onslaught after the major upgrade, however long it may take? Although I’m wondering why the cmk process thinks it needs to create any of those RRD files in the first place, as they are already there. Also, disk usage for the /opt/ partition remains more or less unchanged, so there is indeed no such thing as a “RRD creation” actually happening.

This sounds like a problem with your performance data. That something is not right there.