粒度(记录事实的细节级)：如果要有效地分析数据，就必须都在同一粒度级别上。
Granularity (the level of detail at which a fact is recorded) : If data is to be analyzed effectively, it must all be at the same level of granularity.
我把它设置成每10秒记录一次，这样收集了数天的有效数据。
Setting it to record log entries every 10 seconds, I have collected a few days worth of data.
包含大量引用的ClearQuest记录区域的有效数据获取。
Efficient data fetching for ClearQuest record fields that contain large number of references.
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