公开(公告)号：US20160077974A1

公开(公告)日：2016-03-17

申请号：US14484616

申请日：2014-09-12

Applicant: Seagate Technology LLC

Inventor： Jun Cheol Kim ,  Hye Jeong Nam ,  Sang Yeel Ji

IPC: G06F12/08

CPC classification number: G06F12/0868 ,  G06F12/0804 ,  G06F2212/1016 ,  G06F2212/312 ,  G06F2212/502

Abstract: Technologies are described herein for adaptively controlling the size of a write cache in a storage device based on the time required to flush the cache. Upon receiving a write command at a controller for the storage device, an estimated cache flush time for the write cache is calculated based on the write commands contained therein. If the estimated cache flush time is greater than a maximum threshold time, the size of the write cache is decreased to control the cache flush time. If the estimated cache flush time is less than a minimum threshold time, the size of the write cache is increased to enhance random write performance.

Abstract translation: 本文描述了技术，以基于刷新高速缓存所需的时间自适应地控制存储设备中的写入高速缓存的大小。 在存储装置的控制器处接收到写入命令时，基于其中包含的写入命令来计算用于写入高速缓存的估计的高速缓存刷新时间。 如果估计的高速缓存刷新时间大于最大阈值时间，则减少写入高速缓存的大小以控制高速缓存刷新时间。 如果估计的缓存刷新时间小于最小阈值时间，则增加写入高速缓存的大小以增强随机写入性能。