On Tue, 2005-09-20 at 19:39, Sean Hefty wrote: > > What application/ULP are you running ? > > He's running a modified version of dtest over DAPL that times RDMA reads from > the post time to poll CQ completion. > > The test setup is actually a little more complex. The latencies for the runs > with the various PSNs were: > > 1 - 60us > 0x10000 - 60us (first run) > 0x10000 - 100us (subsequent runs) > 0x20000 - 100us (first run) > 0x20000 - 140us (subsequent runs) > 0x40000 - 140us (first run) > 0x40000 - 220us (subsequent runs) > > The application halts and is re-started between each run, and the QP is > different each time. The only change from run to run is the PSN.
Might it be some timeout being hit before this starts working ? Not sure I understand it but it looks like the CM starting_psn is set to ep_ptr->qp_handle->qp_num in the uDAPL CM. Don't know if that has anything to do with this but shouldn't this be the same PSN set for the QP ? -- Hal _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
