Data relating to execution flows running on different processes or threads at a computer system is correlated. The execution flows may represent sequences of software components that are invoked or other computer system resources that are consumed. A first execution flow fulfills a first request by transmitting a second request which initiates a second execution flow, such as at another computer system. The second request includes meta data which identifies a context of the first request, such as a URL, an agent which monitors the first execution flow, and the component in the first execution flow which initiated the second request. A manager receives information regarding the first execution flow from the first agent, and information regarding the second execution flow, along with the meta data, from a second agent, for correlating the first and second execution flows. The received information may include execution flow shape data.