On Sat, Oct 19, 2013 at 8:58 PM, hjwsm1989-gmail <hjwsm1989@xxxxxxxxx> wrote: > Hi, > I'm testing ceph with samba. > I have 20 OSD nodes on 4 hosts > dy01:1MON, 5 OSDs, 1 samba server > dy02: 1MDS, 5OSDs, 1 samba server > dy03: 5 OSDs, 1 samba server > dy04:5 OSDs, 1 samba server > every samba server exports the ceph kclient mount point. > > When I set 3 samba clients connect to a samba server(dy01), and each write a > single 18GB file, gets 110MB/s speed each. > But when I use 4 clients, the cluster will report 'slow request' msg, and > this time I list files in samba client dir, it gets stuck. > And the test tool reports frame losing. > For the list operation related to MDS, I think the MDS op messages should > have higher priority than clients op. > Have I understood correctly? Hi, I think you are right, the MDS needs higher priority. could you modify the mds code and re-test. In src/ceph_mds.cc, add "messenger->set_default_send_priority(CEPH_MSG_PRIO_HIGH);" after "messenger->set_cluster_protocol(CEPH_MDS_PROTOCOL);" Regards Yan, Zheng > > thanks > > > -- > 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 -- 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
