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Displaying 1-38 out of 38 total
Application-Aware Local-Global Source Deduplication for Cloud Backup Services of Personal Storage
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yinjin Fu,Hong Jiang,Nong Xiao,Lei Tian,Fang Liu,Lei Xu
Issue Date:May 2014
pp. 1155-1165
In personal computing devices that rely on a cloud storage environment for data backup, an imminent challenge facing source deduplication for cloud backup services is the low deduplication efficiency due to a combination of the resource-intensive nature of...
 
PUD-LRU: An Erase-Efficient Write Buffer Management Algorithm for Flash Memory SSD
Found in: Modeling, Analysis, and Simulation of Computer Systems, International Symposium on
By Jian Hu, Hong Jiang, Lei Tian, Lei Xu
Issue Date:August 2010
pp. 69-78
Flash memory SSDs pose a well-known challenge, that is, the erase-before-write problem. Researchers try to solve this inherent problem from two different angles by either designing sophisticated Flash Translation Layer (FTL) schemes to postpone and minimiz...
 
GC-ARM: Garbage Collection-Aware RAM Management for Flash Based Solid State Drives
Found in: 2012 IEEE 7th International Conference on Networking, Architecture, and Storage (NAS)
By Jian Hu,Hong Jiang,Lei Tian,Lei Xu
Issue Date:June 2012
pp. 134-143
Previous on-board RAM management algorithms of SSD are oblivious of garbage collection (GC) efficiency in that they fail to analyze the performance degradation from the perspective of GC efficiency and thus unable to find the true culprit. For some workloa...
 
Exploring and Exploiting the Multilevel Parallelism Inside SSDs for Improved Performance and Endurance
Found in: IEEE Transactions on Computers
By Yang Hu,Hong Jiang,Dan Feng,Lei Tian,Hao Luo,Chao Ren
Issue Date:June 2013
pp. 1141-1155
Given the multilevel internal SSD parallelism at the different four levels: channel-level, chip-level, die-level, and plane-level, how to exploit these levels of parallelism will directly and significantly impact the performance and endurance of SSDs, whic...
 
SAR: SSD Assisted Restore Optimization for Deduplication-Based Storage Systems in the Cloud
Found in: 2012 IEEE 7th International Conference on Networking, Architecture, and Storage (NAS)
By Bo Mao,Hong Jiang,Suzhen Wu,Yinjin Fu,Lei Tian
Issue Date:June 2012
pp. 328-337
The explosive growth of digital content results in enormous strains on the storage systems in the cloud environment. The data deduplication technology has been demonstrated to be very effective in shortening the backup window and saving the network bandwid...
 
P-Dedupe: Exploiting Parallelism in Data Deduplication System
Found in: 2012 IEEE 7th International Conference on Networking, Architecture, and Storage (NAS)
By Wen Xia,Hong Jiang,Dan Feng,Lei Tian,Min Fu,Zhongtao Wang
Issue Date:June 2012
pp. 338-347
Data deduplication, an efficient space reduction method, has gained increasing attention and popularity in data-intensive storage systems. Most existing state-of-the-art deduplication methods remove redundant data at either the file level or the chunk leve...
 
SUV: A Novel Single-Update Version-Management Scheme for Hardware Transactional Memory Systems
Found in: 2012 IEEE International Symposium on Parallel & Distributed Processing (IPDPS)
By Zhichao Yan,Hong Jiang,Dan Feng,Lei Tian,Yujuan Tan
Issue Date:May 2012
pp. 131-143
In order to maintain the transactional semantics, Transactional Memory (TM) must guarantee isolated read and write operations in each transaction, meaning that it must spend a non-negligible and potentially significant amount of time on keeping track of th...
 
Research on Path ID and VPI/VCI Relating Guess Solution for TD-SCDMA Network Centralized Monitoring System
Found in: Intelligent Information Hiding and Multimedia Signal Processing, International Conference on
By Fang Cheng,Lei Tian,Jinfeng Xie
Issue Date:October 2011
pp. 395-398
For improving network monitoring efficiency, on the basis of TD-SCDMA centralized monitoring system, the method of Call Data Record synthesis protocol association and the required parameter are analyzed in the Iub interface. Taking this as a foundation, th...
 
AA-Dedupe: An Application-Aware Source Deduplication Approach for Cloud Backup Services in the Personal Computing Environment
Found in: Cluster Computing, IEEE International Conference on
By Yinjin Fu,Hong Jiang,Nong Xiao,Lei Tian,Fang Liu
Issue Date:September 2011
pp. 112-120
The market for cloud backup services in the personal computing environment is growing due to large volumes of valuable personal and corporate data being stored on desktops, laptops and smart phones. Source deduplication has become a mainstay of cloud backu...
 
A Comprehensive Study on RAID-6 Codes: Horizontal vs. Vertical
Found in: Networking, Architecture, and Storage, International Conference on
By Chao Jin,Dan Feng,Hong Jiang,Lei Tian
Issue Date:July 2011
pp. 102-111
The RAID-6 architecture is playing an increasingly important role in modern storage systems. There are generally two kinds of RAID-6 codes, horizontal codes and vertical codes. Horizontal codes have been extensively studied and widely implemented, while ve...
 
Semantic-Aware Metadata Organization Paradigm in Next-Generation File Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Hua,Hong Jiang,Yifeng Zhu,Dan Feng,Lei Tian
Issue Date:February 2012
pp. 337-344
Existing data storage systems based on the hierarchical directory-tree organization do not meet the scalability and functionality requirements for exponentially growing data sets and increasingly complex metadata queries in large-scale, Exabyte-level file ...
 
CABdedupe: A Causality-Based Deduplication Performance Booster for Cloud Backup Services
Found in: Parallel and Distributed Processing Symposium, International
By Yujuan Tan,Hong Jiang,Dan Feng,Lei Tian,Zhichao Yan
Issue Date:May 2011
pp. 1266-1277
Due to the relatively low bandwidth of WAN (Wide Area Network) that supports cloud backup services, both the backup time and restore time in the cloud backup environment are in desperate need for reduction to make cloud backup a practical and affordable se...
 
RAID6L: A log-assisted RAID6 storage architecture with improved write performance
Found in: Mass Storage Systems and Technologies, IEEE / NASA Goddard Conference on
By Chao Jin,Dan Feng,Hong Jiang,Lei Tian
Issue Date:May 2011
pp. 1-6
The RAID6 architecture is playing an increasingly important role in modern storage systems due to its provision of very high reliability. However, its high write penalty, because of the double-parity-update overheads upon each write operation, has been a p...
 
TRIP: Temporal Redundancy Integrated Performance Booster for Parity-Based RAID Storage Systems
Found in: Parallel and Distributed Systems, International Conference on
By Chao Jin, Dan Feng, Hong Jiang, Lei Tian, Jingning Liu, Xiongzi Ge
Issue Date:December 2010
pp. 205-212
Parity redundancy is widely employed in RAID-structured storage systems to protect against disk failures. However, the small-write problem has been a persistent root cause of the performance bottleneck of such parity-based RAID systems, due to the addition...
 
Analysis and Suggestions of Mining Area's Property Damage Compensation Problem
Found in: International Conference on Information Management, Innovation Management and Industrial Engineering
By Mei Song, Lei Tian
Issue Date:November 2010
pp. 368-371
After “the problems about agriculture, rural areas and peasantry” and “the problem of miner, mine, mining industry and ore city”, in recent years, “the problem of mining and agriculture” also attracts more and more widely attention of the community and gov...
 
Improving Availability of RAID-Structured Storage Systems by Workload Outsourcing
Found in: IEEE Transactions on Computers
By Suzhen Wu, Hong Jiang, Dan Feng, Lei Tian, Bo Mao
Issue Date:January 2011
pp. 64-79
Due to the contention for the shared disk bandwidth, the user I/O intensity can significantly impact the performance of the online low-priority background tasks, thus reducing the reliability and availability of RAID-structured storage systems. In this pap...
 
SAM: A Semantic-Aware Multi-tiered Source De-duplication Framework for Cloud Backup
Found in: Parallel Processing, International Conference on
By Yujuan Tan, Hong Jiang, Dan Feng, Lei Tian, Zhichao Yan, Guohui Zhou
Issue Date:September 2010
pp. 614-623
Existing de-duplication solutions in cloud backup environment either obtain high compression ratios at the cost of heavy de-duplication overheads in terms of increased latency and reduced throughput, or maintain small de-duplication overheads at the cost o...
 
Reliability Modeling of Energy Efficient Logging Architectures Based on RAID10 Systems
Found in: Frontier of Computer Science and Technology, Japan-China Joint Workshop on
By Fang Wang, Yinliang Yue, Quan Zhang, Lei Tian, Dan Feng
Issue Date:August 2010
pp. 57-62
Logging is an important and commonly-used approach to improving energy efficiency and performance of storage systems. Reliability is one of the most important metrics to evaluate the storage systems. However, reliability modeling of energy-efficient loggin...
 
RoLo: A Rotated Logging Storage Architecture for Enterprise Data Centers
Found in: Distributed Computing Systems, International Conference on
By Yinliang Yue, Lei Tian, Hong Jiang, Fang Wang, Dan Feng, Quan Zhang, Pan Zeng
Issue Date:June 2010
pp. 293-304
We propose RoLo (Rotated Logging), a new logging architecture for RAID10 systems for enhanced energy efficiency, performance and reliability. By spreading destaging I/O activities among short idle time slots and proactively reclaiming the stale logging spa...
 
Supporting Scalable and Adaptive Metadata Management in Ultralarge-Scale File Systems
Found in: IEEE Transactions on Parallel and Distributed Systems
By Yu Hua, Yifeng Zhu, Hong Jiang, Dan Feng, Lei Tian
Issue Date:April 2011
pp. 580-593
This paper presents a scalable and adaptive decentralized metadata lookup scheme for ultralarge-scale file systems (more than Petabytes or even Exabytes). Our scheme logically organizes metadata servers (MDSs) into a multilayered query hierarchy and exploi...
 
Achieving page-mapping FTL performance at block-mapping FTL cost by hiding address translation
Found in: Mass Storage Systems and Technologies, IEEE / NASA Goddard Conference on
By Yang Hu, Hong Jiang, Dan Feng, Lei Tian, Shuping Zhang, Jingning Liu, Wei Tong, Yi Qin, Liuzheng Wang
Issue Date:May 2010
pp. 1-12
Flash Translation Layer (FTL) is one of the most important components of SSD, whose main purpose is to perform logical to physical address translation in a way that is suitable to the unique physical characteristics of the Flash memory technology. The pure...
 
SmartStore: a new metadata organization paradigm with semantic-awareness for next-generation file systems
Found in: SC Conference
By Yu Hua, Hong Jiang, Yifeng Zhu, Dan Feng, Lei Tian
Issue Date:November 2009
pp. 1-12
Existing storage systems using hierarchical directory tree do not meet scalability and functionality requirements for exponentially growing datasets and increasingly complex queries in Exabyte-level systems with billions of files. This paper proposes seman...
 
Scalable and Adaptive Metadata Management in Ultra Large-Scale File Systems
Found in: Distributed Computing Systems, International Conference on
By Yu Hua, Yifeng Zhu, Hong Jiang, Dan Feng, Lei Tian
Issue Date:June 2008
pp. 403-410
This paper presents a scalable and adaptive decentralized metadata lookup scheme for ultra large-scale file systems (≥ Petabytes or even Exabytes). Our scheme logically organizes metadata servers (MDS) into a multi-layered query hierarchy and exploits grou...
 
AMP: An Affinity-Based Metadata Prefetching Scheme in Large-Scale Distributed Storage Systems
Found in: Cluster Computing and the Grid, IEEE International Symposium on
By Lin Lin, Xuemin Li, Hong Jiang, Yifeng Zhu, Lei Tian
Issue Date:May 2008
pp. 459-466
Prefetching is an effective technique for improving file access performance, which can significantly reduce access latency for I/O systems. In distributed storage systems, prefetching for metadata files is critical for the overall system performance. In th...
 
Implementation and Evaluation of a Popularity-Based Reconstruction Optimization Algorithm in Availability-Oriented Disk Arrays
Found in: Mass Storage Systems and Technologies, IEEE / NASA Goddard Conference on
By Lei Tian, Hong Jiang, Dan Feng, Qin Xin, Xing Shu
Issue Date:September 2007
pp. 233-238
In this paper, we implement the incorporation of a Popularity-based multi-threaded Reconstruction Optimization algorithm, PRO, into the recovery mechanism of the Linux software RAID (MD), which is a well-known and widely-used availability-oriented disk arr...
 
An Active Region-based Storage Mechanism in Large Wireless Sensor Networks
Found in: Networking, Architecture, and Storage, International Conference on
By Xiongzi Ge, Dan Feng, Lei Tian
Issue Date:July 2007
pp. 139-145
Providing efficient and robust storage service in large sensor networks is critical and challenging. In this paper, an Active Region-based Storage (ARS) mechanism is proposed to accommodate the dynamic data-access behaviors and mutable external environment...
 
Storage Active Service: Model, Method and Practice
Found in: Frontier of Computer Science and Technology, Japan-China Joint Workshop on
By Lingfang Zeng, Dan Feng, Fang Wang, Lei Tian, Zhan Shi
Issue Date:November 2006
pp. 46-53
For current storage system, data service only passively response data consumer?s requests. With the increasing requirements of mass data storage and the development of the hardware technology of computer architecture, storage active service becomes a cruci...
 
Read-Performance Optimization for Deduplication-Based Storage Systems in the Cloud
Found in: ACM Transactions on Storage (TOS)
By Bo Mao, Hong Jiang, Lei Tian, Suzhen Wu, Yinjin Fu
Issue Date:March 2014
pp. 1-22
Data deduplication has been demonstrated to be an effective technique in reducing the total data transferred over the network and the storage space in cloud backup, archiving, and primary storage systems, such as VM (virtual machine) platforms. However, th...
     
Understanding user behavior at scale in a mobile video chat application
Found in: Proceedings of the 2013 ACM international joint conference on Pervasive and ubiquitous computing (UbiComp '13)
By David Chu, Junho Ahn, Lei Tian, Qin Lv, Richard Han, Shaosong Li, Shivakant Mishra
Issue Date:September 2013
pp. 647-656
Online video chat services such as Chatroulette and Omegle randomly match users in video chat sessions and have become increasingly popular, with tens of thousands of users online at anytime during a day. Our interest is in examining user behavior in the g...
     
Demo: MVChat: flasher detection for mobile video chat
Found in: Proceedings of the 10th international conference on Mobile systems, applications, and services (MobiSys '12)
By David Chu, Hanqiang Cheng, Junho Ahn, Lei Tian, Qin Lv, Richard Han, Shivakant Mishra, Xinyu Xing, Xue Liu, Yuli Liang
Issue Date:June 2012
pp. 457-458
Online video chat services such as Chatroulette [1] and Omegle [2] that randomly match pairs of users in video chat sessions have become increasingly popular, with over twenty thousand online users at anytime during a day. A key problem encountered in such...
     
HPDA: A hybrid parity-based disk array for enhanced performance and reliability
Found in: ACM Transactions on Storage (TOS)
By Hong Jiang, Suzhen Wu, Bo Mao, Dan Feng, Jianxi Chen, Lei Tian, Lingfang Zeng
Issue Date:February 2012
pp. 1-20
Flash-based Solid State Drive (SSD) has been productively shipped and deployed in large scale storage systems. However, a single flash-based SSD cannot satisfy the capacity, performance and reliability requirements of the modern storage systems that suppor...
     
MAQS: a mobile sensing system for indoor air quality
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Kun Li, Lei Tian, Li Shang, Michael Hannigan, Omkar Mansata, Qin Lv, Ricardo Piedrahita, Robert P. Dick, Xiang Yun, Yifei Jiang
Issue Date:September 2011
pp. 493-494
Most people spend more than 90% of their time indoors. Indoor air quality (IAQ) influences human health, safety, productivity, and comfort. This demo introduces MAQS, a personalized mobile sensing system for IAQ monitoring. In contrast with existing statio...
     
MAQS: a personalized mobile sensing system for indoor air quality monitoring
Found in: Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11)
By Kun Li, Lei Tian, Li Shang, Michael Hannigan, Omkar Mansata, Qin Lv, Ricardo Piedrahita, Robert P. Dick, Xiang Yun, Yifei Jiang
Issue Date:September 2011
pp. 271-280
Most people spend more than 90% of their time indoors; indoor air quality (IAQ) influences human health, safety, productivity, and comfort. This paper describes MAQS, a personalized mobile sensing system for IAQ monitoring. In contrast with existing statio...
     
Performance impact and interplay of SSD parallelism through advanced commands, allocation strategy and data granularity
Found in: Proceedings of the international conference on Supercomputing (ICS '11)
By Dan Feng, Hao Luo, Hong Jiang, Lei Tian, Shuping Zhang, Yang Hu
Issue Date:May 2011
pp. 96-107
With the development of the NAND-Flash technology, NAND-Flash based Solid-State Disk (SSD) has been attracting a great deal of attention from both industry and academia. While a range of SSD research topics, from interface techniques to buffer management a...
     
Online availability upgrades for parity-based RAIDs through supplementary parity augmentations
Found in: ACM Transactions on Storage (TOS)
By Changsheng Xie, Dan Feng, Hong Jiang, Lei Tian, Qiang Cao, Qin Xin
Issue Date:May 2011
pp. 1-23
In this article, we propose a simple but powerful online availability upgrade mechanism, Supplementary Parity Augmentations(SPA), to address the availability issue in parity-based RAID systems. The basic idea of SPA is to store and update the supplementary...
     
SmartStore: a new metadata organization paradigm with semantic-awareness for next-generation file systems
Found in: Proceedings of the Conference on High Performance Computing Networking, Storage and Analysis (SC '09)
By Dan Feng, Hong Jiang, Lei Tian, Yifeng Zhu, Yu Hua
Issue Date:November 2009
pp. 1-12
Existing storage systems using hierarchical directory tree do not meet scalability and functionality requirements for exponentially growing datasets and increasingly complex queries in Exabyte-level systems with billions of files. This paper proposes seman...
     
P-Code: a new RAID-6 code with optimal properties
Found in: Proceedings of the 23rd international conference on Supercomputing (ICS '09)
By Chao Jin, Dan Feng, Hong Jiang, Lei Tian
Issue Date:June 2009
pp. 1-1
RAID-6 significantly outperforms the other RAID levels in disk-failure tolerance due to its ability to tolerate arbitrary two concurrent disk failures in a disk array. The underlying parity array codes have a significant impact on RAID-6's performance. In ...
     
FARMER: a novel approach to file access correlation mining and evaluation reference model for optimizing peta-scale file system performance
Found in: Proceedings of the 17th international symposium on High performance distributed computing (HPDC '08)
By Dan Feng, Fang Wang, Hong Jiang, Lei Tian, Peng Xia
Issue Date:June 2008
pp. 227-269
File correlation, which refers to a relationship among related files that can manifest in the form of their common access locality (temporal and/or spatial), has become an increasingly important consideration for performance enhancement in peta-scale stora...
     
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