From KVM
 
Line 2: Line 2:
  
 
= Tests =
 
= Tests =
== Tools uses for performance tests ==
+
== Tools used for performance tests ==
 
=== iperf ===
 
=== iperf ===
 
* [http://www.noc.ucf.edu/Tools/Iperf/ Download]
 
* [http://www.noc.ucf.edu/Tools/Iperf/ Download]
Line 14: Line 14:
 
* Cons: No control over TCP windows. Windows version doesn't have some of the Linux version feature. Windows server should be restarted after each test.
 
* Cons: No control over TCP windows. Windows version doesn't have some of the Linux version feature. Windows server should be restarted after each test.
  
=== Additional tools ====
+
==== Additional scripts ====
* Under netkvm\tests\netperf_wrapper.rb - the scrip will run netperf according to its configuration (by default running 3 times for each message size and iterating message sizes between 32byte to 16K).
+
* netkvm\tests\netperf_wrapper.rb - the scrip will run netperf according to its configuration (by default running 3 times for each message size and iterating message sizes between 32byte to 16K).
 +
* netkvm\tests\netperf_log_parser.rb - parsing raw netperf output
 +
 
 +
=== NTttcp ===
 +
* [http://www.microsoft.com/whdc/device/network/TCP_tool.mspx How to Use NTttcp to Test Network Performance]
 +
* Cons: Windows only tool

Revision as of 11:58, 10 August 2009

Performance tests and results

Tests

Tools used for performance tests

iperf

  • Download
  • Typical command line: iperf -c <IP> -w <TCP window size>
  • Pros: ability to control the TCP window size from command line and intermidiate results printouts during the test.
  • Cons: High CPU consumption on Linux machines.

netperf

  • Download
  • Typical command line: netperf -H <IP> -l <test length> -- -m <message size>
  • Cons: No control over TCP windows. Windows version doesn't have some of the Linux version feature. Windows server should be restarted after each test.

Additional scripts

  • netkvm\tests\netperf_wrapper.rb - the scrip will run netperf according to its configuration (by default running 3 times for each message size and iterating message sizes between 32byte to 16K).
  • netkvm\tests\netperf_log_parser.rb - parsing raw netperf output

NTttcp