I have just observed that ceph-mon process, at least bobtail one, has an extremely high density of writes - times above _overall_ cluster amount of writes, measured by qemu driver(and they are very close to be fair). For example, test cluster of 32 osds have 7.5 MByte/s of writes on each mon node having overall amount about 1.5 Mbyte/s and dev- with only three osds has values is about 1Mbyte/s with accumulated real write bandwidth of tens of kilobytes per second. I`m afraid if this is normal, I may hit a limit of spinning storage increasing test cluster, say, twenty times up of number of osd and related ``idle'' write bandwidth. -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
