Hello, I came across this article today: http://www.sebastien-han.fr/blog/2013/08/12/openstack-unexplained-high-cpu-load-on-compute-nodes/ And am wondering the following things: 1. Is RBD (being sparse and certainly hosted mostly on XFS or EXT4 storage backends) being afflicted by this or is it safe? 2. Does anybody have experiences/performance numbers to compare the benefits of io=native versus io=threads with Ceph/RBD? Regards, Christian -- Christian Balzer Network/Systems Engineer chibi@xxxxxxx Global OnLine Japan/Rakuten Communications http://www.gol.com/ _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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