On 16:52 Wed 01 Nov , Oliver wrote: > Hi, folks - > > I am trying to verify and evaluate IB QoS support, running openSM as > subnet manager. The perftest program is extended to set SL as command > line options instead of default 0, and by modifying VL arbitration > tables, I am expecting to see the traffic shaping can actually take > place, but it did not. More details on configuration: > > in opensm.opts: > # QoS default options > qos_high_limit 255 # disable low priority table > qos_vlarb_high: 0:4,1:4,2:8,3:0, 4:0 .... # this is to give VL 2 > (corresponding to SL 2) a higher weight 8 > qos_sl2vl 0,1,2,3,4, ... # no changes here > > I think (though not verified) the Voltaire HCA we are using can > support 8 data VLs. I don't have much more information to go on why > qos shaping is not taking place, any suggestions?
You can verify actual port's parameters with smpquery (from diags), you will need to run to get QoS related parameters: smpquery portinfo ... smpquery vlarb ... smpquery sl2vl ... Sasha > A related question is, if I modify qos setting in SM, do I need to > restart SA on each hosts for it to see the changes? (I am hoping not, > as I tried in the test, it doesn't seem to make a difference) > > Thanks for help. > -- > Oliver > > _______________________________________________ > openib-general mailing list > [email protected] > http://openib.org/mailman/listinfo/openib-general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general > _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
