公开(公告)号：US20120144109A1

公开(公告)日：2012-06-07

申请号：US12961798

申请日：2010-12-07

申请人： Ganesh Balakrishnan ,  Gordon B. Bell ,  Timothy H. Heil ,  MVV Anil Krishna ,  Brian M. Rogers

发明人： Ganesh Balakrishnan ,  Gordon B. Bell ,  Timothy H. Heil ,  MVV Anil Krishna ,  Brian M. Rogers

IPC分类号： G06F12/08 ,  G06F12/00

CPC分类号： G06F12/0871 ,  G06F2212/282

摘要： Embodiments of the invention are directed to optimizing the performance of a split disk cache. In one embodiment, a disk cache includes a primary region having a read portion and write portion and one or more smaller, sample regions also including a read portion and a write portion. The primary region and one or more sample region each have an independently adjustable ratio of a read portion to a write portion. Cached reads are distributed among the read portions of the primary and sample region, while cached writes are distributed among the write portions of the primary and sample region. The performance of the primary region and the performance of the sample region are tracked, such as by obtaining a hit rate for each region during a predefined interval. The read/write ratio of the primary region is then selectively adjusted according to the performance of the one or more sample regions.

摘要翻译： 本发明的实施例涉及优化分割盘高速缓存的性能。 在一个实施例中，磁盘高速缓存包括具有读取部分和写入部分的主区域以及还包括读取部分和写入部分的一个或多个更小的采样区域。 主区域和一个或多个采样区域各自具有读取部分与写入部分的独立可调比率。 高速缓存的读取分布在主要和采样区域的读取部分之间，而高速缓存的写入分布在主要和样本区域的写入部分之间。 跟踪主区域的性能和样本区域的性能，例如通过在预定义的间隔期间获得每个区域的命中率。 然后根据一个或多个样品区域的性能选择性地调节主区域的读/写比。

公开(公告)号：US08572325B2

公开(公告)日：2013-10-29

申请号：US12961798

申请日：2010-12-07

申请人： Ganesh Balakrishnan ,  Gordon B. Bell ,  Timothy H. Heil ,  MVV Anil Krishna ,  Brian M. Rogers

发明人： Ganesh Balakrishnan ,  Gordon B. Bell ,  Timothy H. Heil ,  MVV Anil Krishna ,  Brian M. Rogers

IPC分类号： G06F12/08

CPC分类号： G06F12/0871 ,  G06F2212/282

摘要： Embodiments of the invention are directed to optimizing the performance of a split disk cache. In one embodiment, a disk cache includes a primary region having a read portion and write portion and one or more smaller, sample regions also including a read portion and a write portion. The primary region and one or more sample region each have an independently adjustable ratio of a read portion to a write portion. Cached reads are distributed among the read portions of the primary and sample region, while cached writes are distributed among the write portions of the primary and sample region. The performance of the primary region and the performance of the sample region are tracked, such as by obtaining a hit rate for each region during a predefined interval. The read/write ratio of the primary region is then selectively adjusted according to the performance of the one or more sample regions.

摘要翻译： 本发明的实施例旨在优化分割盘高速缓存的性能。 在一个实施例中，磁盘高速缓存包括具有读取部分和写入部分的主区域以及还包括读取部分和写入部分的一个或多个更小的采样区域。 主区域和一个或多个采样区域各自具有读取部分与写入部分的独立可调比率。 高速缓存的读取分布在主要和采样区域的读取部分之间，而高速缓存的写入分布在主要和样本区域的写入部分之间。 跟踪主区域的性能和样本区域的性能，例如通过在预定义的间隔期间获得每个区域的命中率。 然后根据一个或多个样品区域的性能选择性地调节主区域的读/写比。