Makia, On Wed, 2006-11-01 at 17:42, Makia Minich wrote: > It just so happens that we've started looking at this here at ORNL as > well. I had a question about the options. The manpage makes it seem > that you can set these qos options (e.g. qos_high_limit) from the > command line, but I haven't been overly successful.
What are you referring to in the man page ? Which OpenSM are you using (trunk or 1.1 based) ? > Is there an example of this being done? Yes in both the man page under QOS CONFIGURATION or under osm/doc/qos-config.txt in the repository. > Or is changing the /var/cache/osm/opensm.opts file > the preferred method of changing the options? I think it's the only way but it is imperative QoS is enabled for this to have any effect. -- Hal > Sasha Khapyorsky wrote: > > 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 > > > > _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
