Difference between revisions of "Performance/Network Throughput"

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Revision as of 13:11, 14 April 2011

Benchmark Description

In this benchmark we measure throughput over 10 Gbit network connection in two directions:

  • from VM/CT to physical client
  • from physical client to VM/CT


Implementation

To measure network throughput we use standard performance test netperf. Host with VM/CT and physical client connected are interconnected directly (without switches, etc.)

Testbed Configuration

Server: 4xHexCore Intel Xeon (2.66 GHz), 32 GB RAM, Intel 82598EB 10-Gigabit network card

Client: 4xHexCore Intel Xeon (2.136 GHz), 32 GB RAM, Intel 82598EB 10-Gigabit network card

Network: 10Gbit direct server<>client optical connection

Virtualization Software: ESXi4.1upd1, XenServer5.6fp1, HyperV (R2), OpenVZ (RH6) 2.6.32-042test006.1.x86_64

Guest OS: Centos 5.5 x86_64

Software and Tunings:

  • netperf v2.4.5
  • one VM/CT with netperf configured with 4 vCPU, 4 GB RAM
  • where it was possible, we set offloading & hardware checksumming (gro, gso,etc...) and jumbo frames (MTU=9000) features
  • netperf run string:
    • Server: netserver -p PORT (5 instances)
    • Client: netperf -p PORT -HOST -t TCP_SENDFILE -l 300 (several instanes)
  • Firewall was turned off
  • All other tunings were left at default values

Benchmark Results

10gbit throughput v2.png

Summary

  • OpenVZ support near native 10Gbit network throughput: 9.70Gbit in receive and 9.87Gbit in send tests
  • OpenVZ shows the best network throughput over all the solutions tested
  • In Receive performance test (physical client-> VM/CT) OpenVZ shows great benefits over hypervisors: x2 Times faster than ESXi4.1 and x5 Times faster than XenServer5.6