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|description=This test case checks the network performance; relative transfer rates for Dom0 <=> DomU and Dom0 <=> external vs. DomU <=> external. | |description=This test case checks the network performance; relative transfer rates for Dom0 <=> DomU and Dom0 <=> external vs. DomU <=> external. | ||
|actions= | |actions= | ||
# Start a listener on DomU <pre>$> nc -l 1234 >/dev/null</pre> | # Start a listener on DomU <pre>$> nc -l 1234 >/dev/null</pre> Note: this port may need to be opened on the firewall. Or just drop the firewall for the test ($> /etc/rc.d/init.d/iptables stop) | ||
# On the host start sending some data <pre>$> dd if=/dev/zero bs=1M count=3000 | nc <ip-of-guest> 1234</pre> Capture the MB/s that nc outputs when it completes. | # On the host start sending some data <pre>$> dd if=/dev/zero bs=1M count=3000 | nc <ip-of-guest> 1234</pre> Capture the MB/s that nc outputs when it completes. | ||
# Reverse the listener and the sender and compare the rates. | # Reverse the listener and the sender and compare the rates. | ||
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|results= | |results= | ||
# The transfer rates for DomU will be generally slower than Dom0, even as mush as 30% is expected. Much more than 30% slower may indicate a problem. | # The transfer rates for DomU will be generally slower than Dom0, even as mush as 30% is expected. Much more than 30% slower may indicate a problem. | ||
# More network performance results can be collected with netpref http://www.netperf.org/ | |||
}} | }} | ||
[[Category:Virtualization XenDomU Test Cases|Network]] | [[Category:Virtualization XenDomU Test Cases|Network]] | ||
Latest revision as of 07:04, 17 September 2009
Description
This test case checks the network performance; relative transfer rates for Dom0 <=> DomU and Dom0 <=> external vs. DomU <=> external.
How to test
- Start a listener on DomU
$> nc -l 1234 >/dev/null
Note: this port may need to be opened on the firewall. Or just drop the firewall for the test ($> /etc/rc.d/init.d/iptables stop) - On the host start sending some data
$> dd if=/dev/zero bs=1M count=3000 | nc <ip-of-guest> 1234
Capture the MB/s that nc outputs when it completes. - Reverse the listener and the sender and compare the rates.
- Repeat the process but using an external host. Try with the external host as both a listener and sender for both Dom0 and DomU. Compare the rates of Dom0 send/recv vs. DomU send/recv.
Expected Results
- The transfer rates for DomU will be generally slower than Dom0, even as mush as 30% is expected. Much more than 30% slower may indicate a problem.
- More network performance results can be collected with netpref http://www.netperf.org/