It lets you capture statistics such as total counts, total time, and worst-case performance for requests, and it will also let you drill down into that information for database calls within a request.
它允许捕捉请求的总数、总时间以及最差情况性能之类的统计值，还允许深入请求中数据库调用的信息。
They also provided a heuristic with the worst-case performance ratio of 5/3, and this bound is tight.
他们也给出了一个启发式算法，它的最差执行比为5／3，并且这个界是紧的。
They also provided a heuristic with the worst-case performance ratio of 5/3, and this bound is tight.
他们也给出了一个启发式算法，它的最差执行比为5／3，并且这个界是紧的。
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