| 摘要 |
A conflict resolution mechanism collects statistical data regarding how much time certain common actions or waits take. For example, the mechanism may collect statistics on disk I/O for each disk device. Statistics may include the average access time, for example. Such statistics may be collected over a sliding window of time. With the statistical data that the mechanism collects, the mechanism can make a more intelligent judgment regarding whether a process is in a hanging condition. For example, if the average I/O to a disk is 10 seconds for the past hour, and if a process is doing disk I/O to that disk for 5 seconds, then the mechanism will not yet determine that the process is hanging. In order to determine whether the process is hanging, the mechanism looks at the average time and the longest time for the particular actions that the process is performing.
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