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I forgot to update this one. With help from the [email protected] list we have identified that the performance degradation was due to the use of a 2K MTU on the 23108 tavor HCAs. The OFED tavor_quirk to force a 1K MTU is broken. So in the mean time I simply added a cmid->route.path_rec->mtu = IB_MTU_1024; statement just prior to the rdma_create_qp() call in kiblnd_create_conn() _______________________________________________ Lustre-devel mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-devel
