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    • 6. 发明申请
    • DIFFERENTIAL CACHING MECHANISM BASED ON MEDIA I/O SPEED
    • 基于媒体I / O速度的差分缓存机制
    • US20100318744A1
    • 2010-12-16
    • US12484963
    • 2009-06-15
    • Michael T. BenhaseLawrence Y. ChiuLokesh M. GuptaYu-Cheng Hsu
    • Michael T. BenhaseLawrence Y. ChiuLokesh M. GuptaYu-Cheng Hsu
    • G06F12/08G06F12/00
    • G06F12/0873G06F12/0868G06F12/0871G06F12/121G06F2212/261
    • A method for allocating space in a cache based on media I/O speed is disclosed herein. In certain embodiments, such a method may include storing, in a read cache, cache entries associated with faster-responding storage devices and cache entries associated with slower-responding storage devices. The method may further include implementing an eviction policy in the read cache. This eviction policy may include demoting, from the read cache, the cache entries of faster-responding storage devices faster than the cache entries of slower-responding storage devices, all other variables being equal. In certain embodiments, the eviction policy may further include demoting, from the read cache, cache entries having a lower read-hit ratio faster than cache entries having a higher read-hit ratio, all other variables being equal. A corresponding computer program product and apparatus are also disclosed and claimed herein.
    • 本文公开了一种基于媒体I / O速度在高速缓存中分配空间的方法。 在某些实施例中,这种方法可以包括在读取缓存中存储与更快响应的存储设备相关联的高速缓存条目以及与较慢响应的存储设备相关联的高速缓存条目。 该方法还可以包括在读取高速缓存中实现逐出策略。 这种驱逐策略可以包括从读取的缓存降低响应较快的存储设备的高速缓存条目比缓慢响应的存储设备的缓存条目更快,所有其他变量相等。 在某些实施例中,驱逐策略还可以包括从读取的缓存降级具有比具有较高读取命中率的高速缓存条目更低的读命中率的高速缓存条目,所有其他变量相等。 本文还公开并要求相应的计算机程序产品和装置。