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* '''six''' VMs/CTs (which needed to load server CPU - see testcases) configured with 4vCPU 1GB RAM
* netperf run string:
** in VM/CT; netperf netserver -p 30300
** on the client: netperf -p 30300 -H 172.0.1.1 -t TCP_RR -l 120 -- -r 128 -s 128
* Firewall was turned off
'''In all the three cases (idle system and idle VM/CT, busy system and idle VM/CT, busy system and busy VM/CT) Virtuozzo Containers show the lowest overhead over all the tested virtualization solutions'''
== 10 Gbit Network Throughput ==
=== 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), PVC 4.7 (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 in server mode configured with 1 vCPU, 1 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 ===
[[File:10gbit_throughput.png]]
=== Summary ===
* Parallels Virtuozzo Containers support near native 10Gbit network throughput: 9.70Gbit in receive and 9.87Gbit in send tests
* Parallels Virtuozzo Containers shows the best network throughput over all the solutions tested
* In Receive performance test (physical client-> VM/CT) Parallels Virtuozzo Containers shows great benefits over hypervisors: x2 Times faster than ESXi4.1 and x5 Times faster than XenServer5.6
