On Mon, Jun 10, 2013 at 3:13 PM, Emalayan Vairavanathan <svemala...@yahoo.com> wrote: > I suspect that nodetool cleanup is IO intensive. So running nodetool cleanup > concurrently on the entire cluster may have a significantly impact the IO > performance of applications.
cleanup is a specific kind of compaction, and as such respects the compaction throughput throttle. The compaction throughput throttle is designed to prevent compaction from negatively impacting the performance of things-not-compaction. If you notice that cleanup compaction on all or most nodes consumes too much i/o, reduce the throttle value. =Rob
