A Garbage Collection Aware Stripping method for Solid-State Drives

Huang, Min; Wang, Yi; Liu, Zhao‐Qing; Qiao, Liyan; Shao, Zili

doi:10.1109/aspdac.2015.7059027

Cited by 12 publications

(4 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the angular velocity or electric current based method can be adopted to get a more accurate synchronous motion control. Moreover, many emerging memory and storage techniques have been proposed [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. We will study how to utilize them to further optimize the performance of RT-ROS.…”

Section: Discussionmentioning

confidence: 99%

RT-ROS: A real-time ROS architecture on multi-core processors

Wei

Shao

Huang

et al. 2016

Future Generation Computer Systems

Self Cite

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

RT-ROS: A real-time ROS architecture on multi-core processors

Wei

Shao

Huang

et al. 2016

Future Generation Computer Systems

Self Cite

View full text Add to dashboard Cite

“…to achieve high degrees of parallelism within and across read/write requests. There has been considerable prior work [13,15,18,19,25,31] on scheduling requests in different layers (host software, device and channel levels) to leverage the parallelism offered by such hardware. However, even with these sophisticated schedulers to exploit hardware parallelism, SSD requests can experience considerable inefficiencies.…”

Section: Introductionmentioning

confidence: 99%

“…Schedulers order incoming Read and Write requests to take advantage of such offered parallelism. Numerous such schedulers have been developed over the years, that could be implemented at the host which sends the requests [15,23,31], or the device which assigns these requests to different channels [18,20,25], and even within the channel where requests are sent to individual chips.…”

Section: Introductionmentioning

confidence: 99%

Exploiting Intra-Request Slack to Improve SSD Performance

Elyasi

Arjomand

Sivasubramaniam

et al. 2017

SIGOPS Oper. Syst. Rev.

View full text Add to dashboard Cite

With Solid State Disks (SSDs) offering high degrees of parallelism, SSD controllers place data and direct requests to exploit the maximum offered hardware parallelism. In the quest to maximize parallelism and utilization, sub-requests of a request that are directed to different flash chips by the scheduler can experience differential wait times since their individual queues are not coordinated and load balanced at all times. Since the macro request is considered complete only when its last sub-request completes, some of its subrequests that complete earlier have to necessarily wait for this last sub-request. This paper opens the door to a new class of schedulers to leverage such slack between sub-requests in order to improve response times. Specifically, the paper presents the design and implementation of a slack-enabled reordering scheduler, called Slacker, for sub-requests issued to each flash chip. Layered under a modern SSD request scheduler, Slacker estimates the slack of each incoming sub-request to a flash chip and allows them to jump ahead of existing sub-requests with sufficient slack so as to not detrimentally impact their response times. Slacker is simple to implement and imposes only marginal additions to the hardware. Using a spectrum of 21 workloads with diverse read-write characteristics, we show that Slacker provides as much as 19.5%, 13% and 14.5% improvement in response times, with average improvements of 12%, 6.5% and 8.5%, for write-intensive, read-intensive and read-write balanced workloads, respectively.

show abstract

“…Also, PCM presents much shorter read/write latency compared with NAND flash memory, even though its byte addressability has already made it superior to NAND flash on handling reads/writes of small random data. Flash memory has limited endurance, which can only sustain 10 4 10 5 writes before a failure occurs [30,[39][40][41][42][43][44]. Compared with flash memory, PCM has much better endurance, which is more than 10 6 .…”

Section: Introductionmentioning

confidence: 99%

NVMRA: utilizing NVM to improve the random write operations for NAND-flash-based mobile devices

Chen

Shen

et al. 2015

Softw. Pract. Exper.

Self Cite

View full text Add to dashboard Cite

SUMMARYNAND flash memory has become the major storage media in mobile devices, such as smartphones. However, the random write operations of NAND flash memory heavily affect the I/O performance, thus seriously degrading the application performance in mobile devices. The main reason for slow random write operations is the out-of-place update feature of NAND flash memory. Newly emerged non-volatile memory, such as phase-change memory, spin transfer torque, supports in-place updates and presents much better I/O performance than that of flash memory. All these good features make non-volatile memory (NVM) as a promising solution to improve the random write performance for NAND flash memory. In this paper, we propose a non-volatile memory for random access (NVMRA) scheme to utilize NVM to improve the I/O performance in mobile devices. NVMRA exploits the I/O behaviors of applications to improve the random write performance for each application. Based on different I/O behaviors, such as random write-dominant I/O behavior, NVMRA adopts different storing decisions. The scheme is evaluated on a real Android 4.2 platform. The experimental results show that the proposed scheme can effectively improve the I/O performance and reduce the I/O energy consumption for mobile devices.

show abstract

A Garbage Collection Aware Stripping method for Solid-State Drives

Cited by 12 publications

References 17 publications

RT-ROS: A real-time ROS architecture on multi-core processors

RT-ROS: A real-time ROS architecture on multi-core processors

Exploiting Intra-Request Slack to Improve SSD Performance

NVMRA: utilizing NVM to improve the random write operations for NAND-flash-based mobile devices

Contact Info

Product

Resources

About