Good morning ceph community, for quite some time I was wondering if it would not make sense to add an iftop alike interface to ceph that shows network traffic / iops on a per IP basis? I am aware of "rbd perf image iotop", however I am much more interested into a combined metric featuring 1) Which clients read/write to where and 2) inter OSDs traffic to see the total load on the cluster and being able to drill down. For example, the metric could look like this: -------------------------------------------------------------------------------- FROM TO Bytes/s Packets/s osd.0 [IP] -> [IP] osd.10 .. .. osd.0 [IP] -> [IP] client .. .. -------------------------------------------------------------------------------- Given that this table would be sortable by from/to/min-or-max bytes/min-or-max packets, this would allow spotting the And maybe a summarised view such as: -------------------------------------------------------------------------------- FROM IN Bytes/s OUT Bytes/s IN Packets/s OUT Packets/s osd.0 [IP] osd.10 [IP] -------------------------------------------------------------------------------- This way it would be nicely possible to identify high load. If it was combined with average/current latency, it would potentially also be able to find the bottlenecks in the cluster. From my perspective, easily combining client + intra cluster traffic would be very helpful. What do you think, does that make sense, does it already exist or how do you approach this? Best regards, Nico -- Sustainable and modern Infrastructures by ungleich.ch