+* In Danube, Bottlenecks use Yardstick to do stress tests by iteratively calling yardstick running test cases and in the meantime increasing load.
+
+ * Sometimes, Yardstick just waits for the test environment preparing.
+ This cause troubles since it seams to get Yardstick into a loop to keep waiting.
+ For OPNFV CI, this loop will be automatically stopped because of the default timeout setting. However, for local testing, user should stop this loop manually.
+
+ * Sometimes, Yardstick will return empty test results with test flag indicating test is excuted succefully.
+ It maybe because of the environment issue or poor internet connection causing tools are not installed successfully.
+
+* Sometimes, a process will go to dormancy. In this case, if a tool is installed in the SUT and its process go dormancy, we try to call it twice. Normally, it will response.