title: Netperf return zero throughput and also zero Trans.Rate per sec
body: <p>I am using Netperf tool to benchmark throughput and latency between two VM which have private IP 10.0.1.3 and 10.0.1.13.
  VM 10.0.1.13</p>
  <pre><code>eth0      Link encap:Ethernet  HWaddr 02:3d:b2:f5:33:95
            inet addr:10.0.1.13  Bcast:10.0.1.255  Mask:255.255.255.0
            inet6 addr: fe80::3d:b2ff:fef5:3395/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1450  Metric:1
            RX packets:514888981 errors:0 dropped:0 overruns:0 frame:0
            TX packets:654103302 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:1164689163796 (1.1 TB)  TX bytes:1060437004684 (1.0 TB)
  </code></pre>
  <p>VM 10.0.1.3</p>
  <pre><code>eth0      Link encap:Ethernet  HWaddr 02:91:51:fa:03:08
            inet addr:10.0.1.3  Bcast:10.0.1.255  Mask:255.255.255.0
            inet6 addr: fe80::91:51ff:fefa:308/64 Scope:Link
            UP BROADCAST RUNNING MULTICAST  MTU:1450  Metric:1
            RX packets:2111769 errors:0 dropped:0 overruns:0 frame:0
            TX packets:1936716 errors:0 dropped:0 overruns:0 carrier:0
            collisions:0 txqueuelen:1000
            RX bytes:44230395762 (44.2 GB)  TX bytes:663995366 (663.9 MB)
  </code></pre>
  <p>I make VM 10.0.1.3 become server listen in port 12001 using the following command:</p>
  <pre><code>netserver -d -L 10.0.1.3 -p 12001 -4
  </code></pre>
  <p>After that, I run Netperf test from VM 10.0.1.13 with the following command:</p>
  <pre><code>netperf -d -H 10.0.1.3 -p 12001 -t TCP_STREAM
  </code></pre>
  <p>The connection and test running as expected but I always get value of throughput is 0:</p>
  <pre><code>calculate_confidence: itr  1; time 10.000263; res  0.000000
                                 lcpu -1.000000; rcpu -1.000000
                                 lsdm -1.000000; rsdm -1.000000
  Recv   Send    Send
  Socket Socket  Message  Elapsed
  Size   Size    Size     Time     Throughput
  bytes  bytes   bytes    secs.    10^6bits/sec
  
   87380  16384  16384    10.00       0.00
  </code></pre>
  <p>Similar to the TCP_RR test, I also received the 0 value in the Trans.Rate per sec.</p>
  <pre><code>calculate_confidence: itr  1; time 10.000262; res  0.000000
                                 lcpu -1.000000; rcpu -1.000000
                                 lsdm -1.000000; rsdm -1.000000
  Local /Remote
  Socket Size   Request  Resp.   Elapsed  Trans.
  Send   Recv   Size     Size    Time     Rate
  bytes  Bytes  bytes    bytes   secs.    per sec
  
  16384  87380  1        1       10.00       0.00
  16384  87380
  </code></pre>
  <p>I see a similar topic that related to this question, but I can not find the answer in this topic: <a href="https://stackoverflow.com/questions/23318123/netperf-reporting-zero-throughput">Netperf reporting zero throughput</a></p>
  <p>So, does anyone has some idea about this result.</p>
  <p>Thanks in advance for reading my question, I hope I can find something to debug.</p>