POST FACTO IDENTIFICATION AND PRIORITIZATION OF CAUSES OF BUFFER CONSUMPTION

摘要

Some embodiments provide a system for determining an aggregate delay associated with a task attribute value. During operation, the system can receive a set of projects, which include completed projects and currently executing projects. Next, the system can determine buffer consumption amounts associated with task chains in each project. A task chain can be a sequence of tasks in the project's task dependency network which ends in the project buffer. The buffer consumption amount associated with a task chain can be the amount of the project buffer that would have been consumed if the tasks in the task chain were the only tasks in the project. Next, the system can select a set of task chains based at least on the buffer consumption amounts. The system can then aggregate task delays for tasks in the set of task chains that are associated with the task attribute value.