SIGMETRICS '02 Proceedings of the 2002 ACM SIGMETRICS international conference on Measurement and modeling of computer systems
Efficient randomized web-cache replacement schemes using samples from past eviction times
IEEE/ACM Transactions on Networking (TON)
The Design and Implementation of a Log-structured File System
The Design and Implementation of a Log-structured File System
On efficient wear leveling for large-scale flash-memory storage systems
Proceedings of the 2007 ACM symposium on Applied computing
OSDI'00 Proceedings of the 4th conference on Symposium on Operating System Design & Implementation - Volume 4
Improving NAND Flash Based Disk Caches
ISCA '08 Proceedings of the 35th Annual International Symposium on Computer Architecture
Design tradeoffs for SSD performance
ATC'08 USENIX 2008 Annual Technical Conference on Annual Technical Conference
Integrating NAND flash devices onto servers
Communications of the ACM - A Direct Path to Dependable Software
Migrating server storage to SSDs: analysis of tradeoffs
Proceedings of the 4th ACM European conference on Computer systems
Write amplification analysis in flash-based solid state drives
SYSTOR '09 Proceedings of SYSTOR 2009: The Israeli Experimental Systems Conference
Proceedings of the eleventh international joint conference on Measurement and modeling of computer systems
FlashSim: A Simulator for NAND Flash-Based Solid-State Drives
SIMUL '09 Proceedings of the 2009 First International Conference on Advances in System Simulation
Admission policies for caches of search engine results
SPIRE'07 Proceedings of the 14th international conference on String processing and information retrieval
High performance cache replacement using re-reference interval prediction (RRIP)
Proceedings of the 37th annual international symposium on Computer architecture
Performance of greedy garbage collection in flash-based solid-state drives
Performance Evaluation
Leveraging value locality in optimizing NAND flash-based SSDs
FAST'11 Proceedings of the 9th USENIX conference on File and stroage technologies
A semi-preemptive garbage collector for solid state drives
ISPASS '11 Proceedings of the IEEE International Symposium on Performance Analysis of Systems and Software
Harmonia: A globally coordinated garbage collector for arrays of Solid-State Drives
MSST '11 Proceedings of the 2011 IEEE 27th Symposium on Mass Storage Systems and Technologies
Rejuvenator: A static wear leveling algorithm for NAND flash memory with minimized overhead
MSST '11 Proceedings of the 2011 IEEE 27th Symposium on Mass Storage Systems and Technologies
FlashTier: a lightweight, consistent and durable storage cache
Proceedings of the 7th ACM european conference on Computer Systems
FAST'12 Proceedings of the 10th USENIX conference on File and Storage Technologies
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Flash memory is widely used for its fast random I/O access performance in a gamut of enterprise storage applications. However, due to the limited endurance and asymmetric write performance of flash memory, minimizing writes to a flash device is critical for both performance and endurance. Previous studies have focused on flash memory as a candidate for primary storage devices; little is known about its behavior as a Solid State Cache (SSC) device. In this paper, we propose HEC, a High Endurance Cache that aims to improve overall device endurance via reduced media writes and erases while maximizing cache hit rate performance. We analyze the added write pressures that cache workloads place on flash devices and propose optimizations at both the cache and flash management layers to improve endurance while maintaining or increasing cache hit rate. We demonstrate the individual and cumulative contributions of cache admission policy, cache eviction policy, flash garbage collection policy, and flash device configuration on a) hit rate, b) overall writes, and c) erases as seen by the SSC device. Through our improved cache and flash optimizations, 83% of the analyzed workload ensembles achieved increased or maintained hit rate with write reductions up to 20x, and erase count reductions up to 6x.