SelectedWorks - Zhengyu Yang

Selected Works of Zhengyu Yang

Ph.D. in Computer Engineering

I received my Ph.D. degree in Computer Engineering at Northeastern University, Boston in August 2018, under the supervision of Prof. Ningfang Mi in NUCSRL. My research area is mainly on Cloud Computing, NVMe SSD I/O Stack, Flash Resource Management, Caching Storage System, Deduplication, Docker and Virtualization, VM Migration, and Performance Simulations. I am currently a Researcher/Engineer, Infrastructure at Bytedance Inc., Mountain View, CA.

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About Zhengyu Yang

I received my Ph.D. degree in Computer Engineering at Northeastern University, Boston in August 2018, under the supervision of Prof. Ningfang Mi in NUCSRL. My research area is mainly on Cloud Computing, NVMe SSD I/O Stack, Flash Resource Management, Caching Storage System, Deduplication, Docker and Virtualization, VM Migration, and Performance Simulations. I am currently a Researcher/Engineer, Infrastructure at Bytedance Inc., Mountain View, CA.

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Computer Engineering and Electrical and Computer Engineering

Present	Research Assistant, Northeastern University
Institution Organization Student Type Student Title Degree Time Period to Options Currently enrolled Affiliate my profile with this Institution

http://orcid.org/0000-0002-9822-5843

Papers

AutoReplica: Automatic Data Replica Manager in Distributed Caching and Data ...

1st IEEE International Workshop on Communication, Computing, and Networking in Cyber Physical Systems (CCNCPS 2016) (2016)

ZHENGYU YANG, Jiayin Wang, David Evans and Ningfang Mi

Nowadays, replication technique is widely used in data center storage systems for large scale Cyber-physical Systems (CPS) to prevent data ...

GREM: Dynamic SSD Resource Allocation In Virtualized Storage Systems With ...

35th IEEE International Performance Computing and Communications Conference (IPCCC 2016) (2016)

ZHENGYU YANG, Jianzhe Tai, Janki Bhimani, Jiayin Wang, et al.

In a shared virtualized storage system that runs VMs with heterogeneous IO demands, it becomes a problem for the hypervisor ...

Understanding Performance of I/O Intensive Containerized Applications for NVMe ...

35th IEEE International Performance Computing and Communications Conference (IPCCC 2016) (2016)

Janki Bhimani, Jingpei Yang, ZHENGYU YANG, Ningfang Mi, et al.

Our cloud-based IT world is founded on hypervisors and containers. Containers are becoming an important cornerstone, which is increasingly used ...

eSplash: Efficient Speculation in Large Scale Heterogeneous Computing Systems

35th IEEE International Performance Computing and Communications Conference (IPCCC 2016) (2016)

Jiayin Wang, Teng Wang, ZHENGYU YANG, Ningfang Mi, et al.

In this paper, we aim to develop an efficient speculation framework for a heterogeneous cluster. Speculation is a common mechanism ...

Improving Flash Resource Utilization at Minimal Management Cost in Virtualized ...

IEEE Transactions on Cloud Computing (2015)

ZHENGYU YANG, Jianzhe Tai, Deng Liu, Xiaoyun Zhu, et al.

Effectively leveraging Flash resources has emerged as a highly important problem in enterprise storage systems. One of the popular techniques ...

Improving Virtual Machine Migration via Deduplication

11th IEEE International Conference on Mobile Ad Hoc and Sensor Systems (MASS 2014), 2014 (2014)

Jake Roemer, Mark Groman, ZHENGYU YANG, Yufeng Wang, et al.

For this study the techniques of virtual machine migration are understood and the affects deduplication has on migration are evaluated. ...

Patents

Efficient Append-Only File System for High-Performance Key-Value Stores

US Patent Application US20240028566A1 (2024)

Sheng Qiu, Hao Wang, Zhengyu Yang, Yizheng Jiao, et al.

A file system particular for use with key-value stores is provided. The file system can operate in a user space ...

Hash Engine for Conducting Point Queries

US Patent Application US20240070135A1 (2024)

Jiaxin Ou, Jingwei Zhang, Hao Wang, Hui Zhang, et al.

Systems and methods are provided for improved point querying of a database. The index values are separated from data and ...

Key-Value Storage Engine for Range Scan Sorted Queries

US Patent Application US20240020167A1 (2024)

Jiaxin Ou, Hao Wang, Ming Zhao, Yi Wang, et al.

By splitting data within a large LSM tree structure into smaller tree structures to reduce a number of layers in ...

Key-Value Store and File System

US Patent Application US20240020167A1 (2024)

Hao Wang, Jiaxin Ou, Sheng Qiu, Yi Wang, et al.

A key-value store and a file system are integrated together to provide improved operations. The key-value store can include a ...

Methods and Systems for Garbage Collection and/or Compaction for ...

US Patent Application US20240020231A1 (2024)

Jiaxin Ou, Yi Wang, Jingwei Zhang and Zhengyu Yang

Methods and systems for garbage collection and compaction for key-value engines in a data storage and communication system. The method ...

Systems and Methods for Input/Output Dispatch

US Patent Application US20240036767A1 (2024)

Zhengyu Yang, Hao Wang, Sheng Qiu, Yang Liu, et al.

Decoupled computing systems include layers of same-type computing resources, and include a dispatch layer to assign tasks from one layer ...

Systems, Methods, and Devices for Partition Management of Storage Resources ...

US Patent US20220107743A1 (2022)

Zhengyu Yang, Bridget Molly Davis, Daniel Kim, Jeffrey Chun Hung Wong, et al.

A method of operating a storage system may include allocating a first partition of a tier of storage resources to ...

Intelligent Path Selection and Load Balancing

US Patent US20200326868A1 (2019)

Zhengyu Yang, Nithya Ramakrishnan, Allen Andrews, Sudheendra, Sampath, et al.

A method for dispatching input-output in a system. The system may include a centralized processing circuit, a plurality of persistent ...

Methods and Systems for Adapting Multiple Key-value Stores

US Patent, US20210124754A1 (2019)

Zhengyu Yang, Thomas Rainey, Michael Gehlen, Ping Wong, et al.

A method of adapting a first key-value store to a second key-value store may include determining a conversion strategy based ...

Systems and Methods for I/O Transmissions in Queue Pair-based ...

US Patent US20200387312A1 (2019)

Zhengyu Yang, Nithya Ramakrishnan, Allen Andrews, David Thomas Evans, et al.

A system and method for managing input output queue pairs. In some embodiments, the method includes calculating a system utilization ...

Systems and Methods for Spike Detection and Load Balancing Resource ...

US Patent US20210058453A1 (2019)

Zhengyu Yang, Venkatraman Balasubramanian, Olufogorehan Tunde-Onadele, Ping Wong, et al.

A load balancing system includes: a centralized queue; a pool of resource nodes connected to the centralized queue; one or ...

Adaptive Caching Replacement Manager with Dynamic Updating Granularities and Partitions ...

US Patent, US15/400835, US20180067961A1 (2017)

Zhengyu Yang, David Evans and Jiayin Wang

A method of adjusting temporal and spatial granularities associated with operation of a virtualized file system, the method including analyzing ...

Automatic Data Placement Manager in Multi-Tier All-Flash Datacenter

US Patent US62/534647 (2017)

Zhengyu Yang, David Evans, Allen Andrews, Clay Mayers, et al.

Automatic Data Replica Manager in Distributed Caching and Data Processing ...

US Patent US15/408328, US20180069944A1 (2017)

Zhengyu Yang, Jiayin Wang and David Evans

A method of data storage includes determining a latency distance from a primary node to each of two or more ...

Datacenter Storage Evaluation Framework based on Simulation

US Patent, US20190188023A1 (2017)

Morteza Hoseinzadeh, Zhengyu Yang, Ping Wong and David Evans

An a method for simulating a data center is provided and a non-transitory computer-readable storage medium having recorded thereon a ...

Duplicate In-memory Shared-intermediate Data Detection and Reuse Module in Spark ...

US Patent US15/404100, US20180067861A1 (2017)

Zhengyu Yang, Jiayin Wang and David Evans

A cache management system for managing a plurality of intermediate data includes a processor, and a memory having stored thereon ...

Dynamic Cache Partition Manager in Heterogeneous Virtualization Cloud Cache Environment

US Patent US20190163636 (2017)

Zhengyu Yang and David Evans

Efficient Data Caching Management in Scalable Multi-stage Data Processing Systems

US Patent US15/423384, US20180067857Al (2017)

Jiayin Wang, Zhengyu Yang and David Evans

According to some example embodiments, a method includes: receiving, by a processor, from a data source, a processing profile comprising ...

Hybrid Framework of NVMe-based Storage System in Cloud Computing Environment

US Patent US62/540555 (2017)

Zhengyu Yang, Morteza Hoseinzadeh, Ping Wong, John Artoux, et al.