Hi, Yesterday I checked how fast ceph-mds can process requests (a client keeps sending getattr request of root inode). Requests rate I got is only about half of same test I did a few weeks ago. Perf profile of ceph-mds shows that messenger functions used more CPU time compared to mimic code. Performance result and perf profiles are at http://tracker.ceph.com/issues/36561. Regards Yan, Zheng
