Tiny-tail flash: Near-perfect elimination of garbage collection tail latencies in NAND SSDs
Flash storage has become the mainstream destination for storage users. However, SSDs do
not always deliver the performance that users expect. The core culprit of flash performance …
not always deliver the performance that users expect. The core culprit of flash performance …
The {CASE} of {FEMU}: Cheap, accurate, scalable and extensible flash emulator
We present FEMU, a QEMU-based flash emulator for fostering future full-stack
software/hardware SSD research, with the following four" CASE" benefits. FEMU is cheap …
software/hardware SSD research, with the following four" CASE" benefits. FEMU is cheap …
{LinnOS}: Predictability on unpredictable flash storage with a light neural network
This paper presents LinnOS, an operating system that leverages a light neural network for
inferring SSD performance at a very fine—per-IO—granularity and helps parallel storage …
inferring SSD performance at a very fine—per-IO—granularity and helps parallel storage …
{FlashBlox}: Achieving Both Performance Isolation and Uniform Lifetime for Virtualized {SSDs}
A longstanding goal of SSD virtualization has been to provide performance isolation
between multiple tenants sharing the device. Virtualizing SSDs, however, has traditionally …
between multiple tenants sharing the device. Virtualizing SSDs, however, has traditionally …
The tail at store: A revelation from millions of hours of disk and {SSD} deployments
M Hao, G Soundararajan… - … USENIX Conference on …, 2016 - usenix.org
We study storage performance in over 450,000 disks and 4,000 SSDs over 87 days for an
overall total of 857 million (disk) and 7 million (SSD) drive hours. We find that storage …
overall total of 857 million (disk) and 7 million (SSD) drive hours. We find that storage …
IODA: A host/device co-design for strong predictability contract on modern flash storage
Predictable latency on flash storage is a long-pursuit goal, yet, unpredictability stays due to
the unavoidable disturbance from many well-known SSD internal activities. To combat this …
the unavoidable disturbance from many well-known SSD internal activities. To combat this …
Alleviating garbage collection interference through spatial separation in all flash arrays
We present SWAN, a novel All Flash Array (AFA) management scheme. Recent flash SSDs
provide high I/O bandwidth (eg, 3-10GB/s) so the storage bandwidth can easily surpass the …
provide high I/O bandwidth (eg, 3-10GB/s) so the storage bandwidth can easily surpass the …
Access characteristic guided read and write cost regulation for performance improvement on flash memory
The relatively high cost of write operations has become the performance bottleneck of flash
memory. Write cost refers to the time needed to program a flash page using incremental-step …
memory. Write cost refers to the time needed to program a flash page using incremental-step …
RackBlox: A Software-Defined Rack-Scale Storage System with Network-Storage Co-Design
Software-defined networking (SDN) and software-defined flash (SDF) have been serving as
the backbone of modern data centers. They are managed separately to handle I/O requests …
the backbone of modern data centers. They are managed separately to handle I/O requests …
{FusionRAID}: Achieving Consistent Low Latency for Commodity {SSD} Arrays
The use of all-flash arrays has been increasing. Compared to their hard-disk counterparts,
each drive offers higher performance but also undergoes more severe periodic performance …
each drive offers higher performance but also undergoes more severe periodic performance …