[ofa-general] Chelsio T3: Aggregate Throughput

Philip Frey1 PHF at zurich.ibm.com
Fri Feb 6 01:59:27 PST 2009


> Are the RNICs experiencing lots of pause frames during the test? 
> 
> ethtool -S ethX|grep Pause

(cheiron was the server and the others were RDMA reading from it)

[root at ajax]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 248428611
     RxPauseFrames      : 0

[root at achilles]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 250937599
     RxPauseFrames      : 0

[root at bacchus]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 21153321
     RxPauseFrames      : 70

[root at borus]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 22056840
     RxPauseFrames      : 70

[root at car]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 23540619
     RxPauseFrames      : 70

[root at cheiron]$ ethtool -S eth2 | grep Pause
      TxPauseFrames      : 0
     RxPauseFrames      : 26569935


> Also, are the iWARP stacks retransmitting a lot during the test? 
> 
> cat /sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs

[root at ajax]$ cat /sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0

[root at achilles]$ cat 
/sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0

[root at bacchus]$ cat 
/sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0

[root at borus]$ cat /sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0

[root at car]$ cat /sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0

[root at cheiron]$ cat 
/sys/class/infiniband/cxgb3_0/proto_stats/tcpRetransSegs
 0
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