[netperf-talk] global question concerning Netperf test and SMP support

[Simon Duboue]

Hello everyone,

Here are a part of my last results:

netperf -l 60 -H 10.0.17.200 -t TCP_STREAM -cC -i 10,2 -I 99,5 -- -m 32768 
-s 57344 -S 57344
netperf -l 60 -H 10.0.17.200 -t TCP_STREAM -cC -i 10,2 -I 99,5 -- -m 32768 
-s 57344 -S 57344
netperf -l 60 -H 10.0.17.200 -t TCP_STREAM -cC -i 10,2 -I 99,5 -- -m 32768 
-s 57344 -S 57344
netperf -l 60 -H 10.0.17.200 -t TCP_STREAM -cC -i 10,2 -I 99,5 -- -m 32768 
-s 57344 -S 57344
netperf -l 60 -H 10.0.17.200 -t TCP_STREAM -cC -i 10,2 -I 99,5 -- -m 32768 
-s 57344 -S 57344
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.17.200 
(10.0.17.200) port 0 AF_INET : +/-2.5% @ 99% conf.  : demo
Recv   Send    Send                          Utilization       Service 
Demand
Socket Socket  Message  Elapsed              Send     Recv     Send Recv
Size   Size    Size     Time     Throughput  local    remote   local 
remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB us/KB

114688 114688  32768    60.00      1471.34   25.67    33.66    2.889 
15.081 
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.17.200 
(10.0.17.200) port 0 AF_INET : +/-2.5% @ 99% conf.  : demo
Recv   Send    Send                          Utilization       Service 
Demand
Socket Socket  Message  Elapsed              Send     Recv     Send Recv
Size   Size    Size     Time     Throughput  local    remote   local 
remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB us/KB

114688 114688  32768    60.00      1456.63   25.68    33.67    2.901 
15.043 
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.17.200 
(10.0.17.200) port 0 AF_INET : +/-2.5% @ 99% conf.  : demo
Recv   Send    Send                          Utilization       Service 
Demand
Socket Socket  Message  Elapsed              Send     Recv     Send Recv
Size   Size    Size     Time     Throughput  local    remote   local 
remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB us/KB

114688 114688  32768    60.01      1512.94   25.68    33.67    2.816 
14.969 
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.17.200 
(10.0.17.200) port 0 AF_INET : +/-2.5% @ 99% conf.  : demo
Recv   Send    Send                          Utilization       Service 
Demand
Socket Socket  Message  Elapsed              Send     Recv     Send Recv
Size   Size    Size     Time     Throughput  local    remote   local 
remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB us/KB

114688 114688  32768    60.03      1465.22   25.67    33.68    2.920 
14.895 
TCP STREAM TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 10.0.17.200 
(10.0.17.200) port 0 AF_INET : +/-2.5% @ 99% conf.  : demo
Recv   Send    Send                          Utilization       Service 
Demand
Socket Socket  Message  Elapsed              Send     Recv     Send Recv
Size   Size    Size     Time     Throughput  local    remote   local 
remote
bytes  bytes   bytes    secs.    10^6bits/s  % S      % S      us/KB us/KB

114688 114688  32768    60.03      1498.52   25.67    33.68    2.819 
14.849 

Total throughput = 1471.34 + 1456.63 + 1512.94 + 1465.22 + 1498.52 = 
7404.65 Mbits/s.
The CPU utilization seems correct and are very close together and they are 
not negative! (this seems to appear more with UDP stream test than with 
TCP ones)
I observe that these negative values mainly appears on the first results 
of my test script.

If you have any remarks.

I wish you a nice day.

Best regards.

Simon Duboué
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