Do we understand why debug mode got so much slower? Is there something we can do to improve it? We are for instance seeing new issues with the messenger in our testing, apparently because the reduced speed opens up race conditions much wider. In this case that's good for us, but it could easily go the other way as well and I'm concerned about not finding new issues in our testing if the difference is so substantial compared to what will be deployed by users. -Greg On Wed, Oct 24, 2018 at 3:18 AM Yan, Zheng <ukernel@xxxxxxxxx> wrote: > > 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
