High performance solid state storage under Linux
MSST '10 Proceedings of the 2010 IEEE 26th Symposium on Mass Storage Systems and Technologies (MSST)
Moneta: A High-Performance Storage Array Architecture for Next-Generation, Non-volatile Memories
MICRO '43 Proceedings of the 2010 43rd Annual IEEE/ACM International Symposium on Microarchitecture
ACM Transactions on Storage (TOS)
Ozone (O3): An Out-of-Order Flash Memory Controller Architecture
IEEE Transactions on Computers
Providing safe, user space access to fast, solid state disks
ASPLOS XVII Proceedings of the seventeenth international conference on Architectural Support for Programming Languages and Operating Systems
When poll is better than interrupt
FAST'12 Proceedings of the 10th USENIX conference on File and Storage Technologies
Dynamic interval polling and pipelined post I/O processing for low-latency storage class memory
HotStorage'13 Proceedings of the 5th USENIX conference on Hot Topics in Storage and File Systems
Towards High-Performance SAN with Fast Storage Devices
ACM Transactions on Storage (TOS)
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In this work, we propose a new batching scheme called temporal merge, which dispatches discontiguous block requests using a single I/O operation. It overcomes the disadvantages of narrow block interface and enables an OS to exploit peak throughput of a storage device for small random requests as well as a single large request. Temporal merge significantly enhances device and channel utilization regardless of access sequentiality of a workload, which has not been achievable by traditional schemes. We extended the block I/O interface of a DRAM-based SSD in cooperation with its vendor, and implemented temporal merge into I/O subsystem in Linux 2.6.32. The experimental results show that under multi-threaded random access workload, the proposed solution can achieve 87%-100% of peak throughput of the SSD. We expect that the new temporal merge interface will lead to better design of future host controller interfaces such as NVMHCI for next-generation storage devices.