On Thu, Jun 29, 2017 at 3:25 PM, Sage Weil <sage@xxxxxxxxxxxx> wrote: > IIRC Igor hit this by doing 4KB random writes via the fio ObjectStore > driver. I suspect we'd see a similar with the OSD and 4KB writes, but > never confirmed. There was also a recent ticket for the librbd client-side cache using up exactly 2x the amount RAM as expected under 4K workloads. I haven't looked into it yet, but I can see how "raw_combined" could potentially cause this ballooning that I haven't seen before (I used to expect it on <4K workloads under hammer). -- Jason -- 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
