Method and apparatus to efficiently track locations of dirty cache lines in a cache in a two level main memory

• Main Authors: ALAMELDEEN ALAA R, RUDOFF ANDY M, WARNES LIDIA, SWAMINATHAN MUTHUKUMAR P, WANG ZHE
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2020
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

A two-level main memory that includes a persistent memory and a cache is provided. Locations of dirty cache lines in the cache are tracked through the use a dirty cache line tracker. The dirty cache line tracker is stored in the cache and can be cached in a memory controller for the persistent memory. The dirty cache line tracker can be used to bypass cache lookup, perform efficient dirty cache line scrubbing and to decouple battery power and capacity of the cache in the two-level main memory. 提供了包括持久性存储器和高速缓存的二级主存储器。通过使用脏高速缓存行跟踪器来跟踪脏高速缓存行在高速缓存中的位置。脏高速缓存行跟踪器存储在高速缓存中，并且可以被缓存到用于持久性存储器的存储器控制器中。脏高速缓存行跟踪器可以用于绕过高速缓存查找、执行高效的脏高速缓存行清理以及使电池电量与二级主存储器中的高速缓存的容量解耦。