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<p class="MsoPlainText">Dear Openstack community,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Openstack environment:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">2 compute nodes each has:<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo3">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>1x AMD Opteron(tm) Processor 6282 SE (56 cpus)<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo3">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>512GB RAM<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo3">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>1x dual port 25Gbps Mellanox connect-4 XOR bond<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Physical network:<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>Compute nodes connected through a mellanox 2700 switch (100Gbps)<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l1 level1 lfo1">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>MTU 9000<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Openstack network:<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo2">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>OVS + VxLan<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo2">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>Vxlan offloading setup on physical nics<o:p></o:p></p>
<p class="MsoPlainText" style="margin-left:.5in;text-indent:-.25in;mso-list:l2 level1 lfo2">
<![if !supportLists]><span style="font-family:Symbol"><span style="mso-list:Ignore">·<span style="font:7.0pt "Times New Roman"">        
</span></span></span><![endif]>MTU on vms 8950<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><i><u>Compute nodes nics:<o:p></o:p></u></i></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><span style="font-family:Consolas">[root@hercules-23 ~]# ip a<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">…<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">6: p2p1: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP>
<b><span style="color:red">mtu 9000</span></b><span style="color:red"> </span>qdisc mq master bond0 state UP qlen 1000<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    link/ether 7c:fe:90:12:23:c4 brd ff:ff:ff:ff:ff:ff<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">7: p2p2: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP>
<b><span style="color:red">mtu 9000</span></b><span style="color:red"> </span>qdisc mq master bond0 state UP qlen 1000<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    link/ether 7c:fe:90:12:23:c4 brd ff:ff:ff:ff:ff:ff<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">8: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP>
<b><span style="color:red">mtu 9000</span></b><span style="color:red"> </span>qdisc noqueue state UP qlen 1000<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    link/ether 7c:fe:90:12:23:c4 brd ff:ff:ff:ff:ff:ff<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    inet 10.0.32.23/16 brd 10.0.255.255 scope global bond0<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">       valid_lft forever preferred_lft forever<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    inet6 fe80::3826:9daa:ef1b:43b0/64 scope link<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">       valid_lft forever preferred_lft forever<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">…<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><i><u>VM nics:<o:p></o:p></u></i></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><span style="font-family:Consolas">[centos@centos2 ~]$ ip a<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">…<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP>
<b><span style="color:red">mtu 8950</span></b><span style="color:red"> </span>qdisc pfifo_fast state UP qlen 1000<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    link/ether fa:16:3e:a3:d4:85 brd ff:ff:ff:ff:ff:ff<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    inet 192.168.1.116/24 brd 192.168.1.255 scope global dynamic eth0<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">       valid_lft 57885sec preferred_lft 57885sec<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">    inet6 fe80::f816:3eff:fea3:d485/64 scope link<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">       valid_lft forever preferred_lft forever<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><i><u>host to host bandwidth using muttcp (1 thread):<o:p></o:p></u></i></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">[root@hercules-22 ~]# nuttcp -l65536 -fparse 10.0.32.23<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">megabytes=19844.1759 real_seconds=10.00
<b><span style="color:red">rate_Mbps=16643.4189</span></b><span style="color:red">
</span>tx_cpu=61 rx_cpu=99 retrans=0 rtt_ms=0.28<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoPlainText"><i><u>VMTP Output:<o:p></o:p></u></i></p>
<p class="MsoPlainText"><i><u><o:p><span style="text-decoration:none"> </span></o:p></u></i></p>
<p class="MsoPlainText"><span style="font-family:Consolas">==================<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">Total Scenarios:   29<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">Passed Scenarios:  17 [100.00%]<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">Failed Scenarios:  0 [0.00%]<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">Skipped Scenarios: 12<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">+----------+-------------------------------------------------------+-------------------+----------------------------------------------------------------------------------+<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| Scenario | Scenario Name                                         | Functional Status | Data                                                                             |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">+----------+-------------------------------------------------------+-------------------+----------------------------------------------------------------------------------+<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 1.1      | Same Network, Fixed IP, Intra-node, TCP               | PASSED            | {'tp_kbps': '7613130', 'rtt_ms': '0.463333'}                                     |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 1.2      | Same Network, Fixed IP, Intra-node, UDP               | PASSED            | {128: {'tp_kbps': 59954, 'loss_rate': 0.02}, 1024: {'tp_kbps': 444264,           |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 0.05}, 8192: {'tp_kbps': 2877674, 'loss_rate': 0.0}}                |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 1.3      | Same Network, Fixed IP, Intra-node, ICMP              | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '0.376/0.285/0.439/0.047',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '0.617/0.361/1.513/0.388', '1500-byte': '0.369/0.322/0.452/0.048'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 1.4      | Same Network, Fixed IP, Intra-node, Multicast         | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 2.1      | Same Network, Fixed IP, Inter-node, TCP               | PASSED            | {'tp_kbps': '6864266', 'rtt_ms': '0.653333'}                                     |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 2.2      | Same Network, Fixed IP, Inter-node, UDP               | PASSED            | {128: {'tp_kbps': 80955, 'loss_rate': 0.46}, 1024: {'tp_kbps': 166186,           |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 36.2}, 8192: {'tp_kbps': 2189389, 'loss_rate': 0.05}}               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 2.3      | Same Network, Fixed IP, Inter-node, ICMP              | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '0.484/0.315/0.561/0.068',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '0.719/0.421/2.714/0.666', '1500-byte': '0.465/0.358/0.553/0.055'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 2.4      | Same Network, Fixed IP, Inter-node, Multicast         | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 3.1      | Different Network, Fixed IP, Intra-node, TCP          | PASSED            | {'tp_kbps': '5207719', 'rtt_ms': '0.896667'}                                     |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 3.2      | Different Network, Fixed IP, Intra-node, UDP          | PASSED            | {128: {'tp_kbps': 76569, 'loss_rate': 0.9}, 1024: {'tp_kbps': 571847,            |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 2.75}, 8192: {'tp_kbps': 1855166, 'loss_rate': 0.0}}                |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 3.3      | Different Network, Fixed IP, Intra-node, ICMP         | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '0.859/0.658/1.103/0.133',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '0.976/0.576/1.946/0.361', '1500-byte': '0.824/0.644/1.082/0.136'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 3.4      | Different Network, Fixed IP, Intra-node, Multicast    | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 4.1      | Different Network, Fixed IP, Inter-node, TCP          | PASSED            | {'tp_kbps': '6730928', 'rtt_ms': '1.37667'}                                      |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 4.2      | Different Network, Fixed IP, Inter-node, UDP          | PASSED            | {128: {'tp_kbps': 31131, 'loss_rate': 4.84}, 1024: {'tp_kbps': 579859,           |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 4.35}, 8192: {'tp_kbps': 1601092, 'loss_rate': 0.18}}               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 4.3      | Different Network, Fixed IP, Inter-node, ICMP         | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '0.915/0.740/1.138/0.144',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '1.134/0.713/2.210/0.539', '1500-byte': '0.980/0.719/1.188/0.131'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 4.4      | Different Network, Fixed IP, Inter-node, Multicast    | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 5.1      | Different Network, Floating IP, Intra-node, TCP       | PASSED            | {'tp_kbps': '5406554', 'rtt_ms': '0.836667'}                                     |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 5.2      | Different Network, Floating IP, Intra-node, UDP       | PASSED            | {128: {'tp_kbps': 71084, 'loss_rate': 4.26}, 1024: {'tp_kbps': 507900,           |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 15.96}, 8192: {'tp_kbps': 2011414, 'loss_rate': 3.72}}              |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 5.3      | Different Network, Floating IP, Intra-node, ICMP      | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '0.902/0.760/1.007/0.073',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '0.875/0.661/0.967/0.104', '1500-byte': '0.889/0.754/0.988/0.082'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 5.4      | Different Network, Floating IP, Intra-node, Multicast | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 6.1      | Different Network, Floating IP, Inter-node, TCP       | PASSED            | {'tp_kbps': '6770995', 'rtt_ms': '0.973333'}                                     |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 6.2      | Different Network, Floating IP, Inter-node, UDP       | PASSED            | {128: {'tp_kbps': 81812, 'loss_rate': 2.25}, 1024: {'tp_kbps': 617485,           |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | 'loss_rate': 3.27}, 8192: {'tp_kbps': 1295351, 'loss_rate': 0.02}}               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 6.3      | Different Network, Floating IP, Inter-node, ICMP      | PASSED            | {'rtt avg/min/max/stddev msec': {'391-byte': '1.028/0.920/1.254/0.105',          |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">|          |                                                       |                   | '64-byte': '1.043/0.807/1.227/0.137', '1500-byte': '0.988/0.759/1.194/0.146'}}   |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 6.4      | Different Network, Floating IP, Inter-node, Multicast | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 7.1      | Native Throughput, TCP                                | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 7.2      | Native Throughput, UDP                                | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 7.3      | Native Throughput, ICMP                               | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 7.4      | Native Throughput, Multicast                          | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 8.1      | VM to Host Uploading                                  | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">| 8.2      | VM to Host Downloading                                | SKIPPED           | {}                                                                               |<o:p></o:p></span></p>
<p class="MsoPlainText"><span style="font-family:Consolas">+----------+-------------------------------------------------------+-------------------+----------------------------------------------------------------------------------+<o:p></o:p></span></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">My concern is about east-west bandwidth:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Inter-host and intra-subnet (vmtp Scenario 2.1): I am getting ~6.8Gbps which I found quite poor compared to 16.0 Gbps I am getting from the hosts<o:p></o:p></p>
<p class="MsoPlainText">intra-host and intra-subnet (vmtp Scenario 1.1): In this example traffic remains inside the compute node and no tunneling is required. I am getting ~7.6Gbps which I found quite poor compared to 16.0 Gbps I am getting from the hosts<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">NOTE: I am not running anything except these tests on the machines so cpu usage is quite low.
<o:p></o:p></p>
<p class="MsoPlainText">NOTE2: I know vmtp uses <o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">I would like to understand what is stopping my vms to get full network bandwidth. Is this related with an OVS configuration? ML2? Other part of neutron? Something else?<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Thank you very much<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Manuel Sopena Ballesteros | Big data Engineer<o:p></o:p></p>
<p class="MsoPlainText">Garvan Institute of Medical Research <o:p></o:p></p>
<p class="MsoPlainText">The Kinghorn Cancer Centre, 370 Victoria Street, Darlinghurst, NSW 2010<o:p></o:p></p>
<p class="MsoPlainText">T: + 61 (0)2 9355 5760 | F: +61 (0)2 9295 8507 | E: manuel.sb@garvan.org.au<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
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