Specifying Test Settings for Visual Studio Tests

When you run tests from Visual Studio or in the build service, the test framework can collect data such as diagnostic trace information, system information, or a video recording of a coded UI test. You can also simulate potential bottlenecks on the test machines, reduce the available system memory, or emulate a slow network.
<?xml version="1.0" encoding="UTF-8"?>
<TestSettings name="Local" id="ca406766-d425-4d29-ad5e-30519a1f5179" xmlns="http://microsoft.com/schemas/VisualStudio/TeamTest/2010">
 <Description>These are default test settings for a local test run.</Description>
 <Deployment enabled="false" />
 <Execution>
   <TestTypeSpecific />
   <AgentRule name="Execution Agents">
   </AgentRule>
 </Execution>
</TestSettings

http://msdn.microsoft.com/en-us/library/ee256991.aspx