a task comprising at least a first subtask on a computer system is analyzed . as part of the analysis , a profiler controller transmits a first profile instruction to a first profiler instance . the profiler controller transmits a second profile instruction to a second profiler instance . in response to the first profile instruction , the first profiler instances embeds a first task identifier into a first subtask request sent by a first virtual machine . in response to the second profile instruction , the second profiler instance captures the first task identifier from the first subtask request received by a second process virtual machine . the profiler controller identifies an execution instance of the task of the computer system based on the first copy and the second copy of the first task identifier received from the first profiler instance and the second profiler instance , respectively .