Only ceph complied in debug mode has the regression. Ceph complied in release mode has no regression. Sorry for the noisy. Yan, Zheng On Wed, Oct 24, 2018 at 1:46 PM Yan, Zheng <ukernel@xxxxxxxxx> wrote: > > 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