Michael or Roland, could you please try iperf with UDP vs multicast, so I'm not the middleman here?
Scott > -----Original Message----- > From: Michael S. Tsirkin [mailto:[EMAIL PROTECTED] > Sent: Wednesday, April 11, 2007 9:17 PM > To: [EMAIL PROTECTED]; Roland Dreier; Scott > Weitzenkamp (sweitzen); [EMAIL PROTECTED] > Subject: Re: [Bug 506] IPoIB IPv4 multicast throughput is poor > > > Yes, get a stready stream of these on sender. > > > > ib0: TX ring full, stopping kernel net queue > > Aha. (As a note, it's always useful to set debug level when > you experience problems). > > > Why am I getting low throughput of IP multicast vs IPoIB UD > UDP unicast? > > It's something in the hardware - it's not handing out > completions fast enough, . Try increasing send queue size > through IPoIB module parameter. > > > BTW, Roland, why aren't we using txqueuelen ifconfig/ethtool > options here? > > -- > MST > _______________________________________________ general mailing list [EMAIL PROTECTED] http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
