I think you can actually see it in the graph.
The Condor Cluster with its 500 Teraflops would have been in the Top 500 supercomputers from 2009 till ~2014.
The PS3 operating system is a BSD, and you can see a thin yellow line in that exact time frame.
Would the one made out of playstations be in this statistic?
Yes, in the linux stat. The otheros option on the early PS3 allowed you to boot linux, which is what most, of not all, of the clusters used.
I think you can actually see it in the graph.
The Condor Cluster with its 500 Teraflops would have been in the Top 500 supercomputers from 2009 till ~2014.
The PS3 operating system is a BSD, and you can see a thin yellow line in that exact time frame.