On Thu, Jun 28, 2012 at 7:27 AM, Brian Edmonds <mornir@xxxxxxxxx> wrote: > I've installed a little, four node Ceph (0.47.2) cluster using Xen > virtual machines for testing, and when I run bonnie against a (kernel > driver) mount of it, it seems to be somewhat flaky (disturbing log > messages, occasional binary deaths), and very slow. I expected some > slowness, with all the virtualization going on, but when bonnie is > running, simply doing a cd into the mount takes minutes to complete. > Is this to be expected, or is it worth spending time to investigate? > I intend to deploy this on bare metal eventually, but was hoping to > get some operational experience with Ceph before investing the money > in that. So right now you're using the Ceph filesystem, rather than RBD, right? What processes do you have running on which machines/VMs? What's the CPU usage on the ceph-mds process? And a warning: the filesystem, while nifty, is not yet production-ready — it works great for some use cases but there are some serious known bugs that aren't very hard to trigger, as we've been doing a lot of QA on RADOS and its associated systems (which the filesystem depends on) at the expense of the filesystem itself. -Greg -- 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
