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    • 6. 发明申请
    • EXTENT SIZE OPTIMIZATION
    • EXTENT SIZE优化
    • US20110191565A1
    • 2011-08-04
    • US12698663
    • 2010-02-02
    • David B. LeGendreFranklin E. McCuneDavid C. ReedMax D. Smith
    • David B. LeGendreFranklin E. McCuneDavid C. ReedMax D. Smith
    • G06F12/02G06F12/00
    • G06F12/00G06F12/02
    • A method for automatically optimizing an allocation amount for a data set includes receiving an extend request, specifying an allocation amount, for a data set in a storage pool. The method increments a counter in response to receiving the extend request. In the event the counter has reached a threshold value, the method automatically increases the allocation amount of the extend request, such as by multiplying the allocation amount by a multiplier. In the event the allocation amount is larger than a largest free extent in the storage pool, the method automatically decreases the allocation amount of the extend request to correspond to the largest available free extent. Such a method reduces or eliminates the chance that an extend request will fail, and reduces overhead associated with extending and consolidating extents. A corresponding apparatus and computer program product are also disclosed herein.
    • 用于自动优化数据集的分配量的方法包括:为存储池中的数据集接收指定分配量的扩展请求。 该方法响应于接收到扩展请求而递增计数器。 在计数器达到阈值的情况下,该方法通过将分配量乘以乘数来自动增加扩展请求的分配量。 在分配量大于存储池中的最大可用空间的情况下,该方法自动减少扩展请求的分配量以对应于最大可用空闲区段。 这种方法减少或消除了扩展请求失败的机会,并减少了与扩展和合并扩展区相关联的开销。 本文还公开了相应的装置和计算机程序产品。