most likely obvious and perhaps already answered in the past, but just want to 
be sure ...

E.g. I have set:

concurrent_compactors: 4
compaction_throughput_mb_per_sec: 16

I guess this will lead to ~ 4MB/s per Thread if I have 4 compactions running in 

So, in case of upscaling a machine and following the recommendation in 
cassandra.yaml I may set:

concurrent_compactors: 8

If this throughput remains unchanged, does this mean that we have 2 MB/s per 
Thread then, e.g. largish compactions running on a single thread taking twice 
the time then?

Using Cassandra 2.1 and 3.11 in case this matters.

Thanks a lot!

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