I trust your experience over my own in this area; just reading this piece with curiosity. That makes sense, metadata and namespace operations would be difficult

I trust your experience over my own in this area; just reading this piece with curiosity. That makes sense, metadata and namespace operations would be difficult when distributed. But isn't the graph in the article specifically about file handle state maintained by the OS? I guess the graph is weird though it wants to be logarithmic but the power of the series keeps decreasing...what type of graph is that?