Publications

Replay without Recording of Production Bugs for Service Oriented Applications
Short time-to-localize and time-to-x for production bugs is extremely important for any 24x7 service-oriented application (SOA). …
Nipun Arora, Jonathan Bell, Franjo Ivancic, Gail Kaiser, Baishakhi Ray
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LogLens: A Real-Time Log Analysis System
Administrators of most user-facing systems depend on periodic log data to get an idea of the health and status of production …
B.Debnath, M.Solaimani, M.A.Gulzar, N.Arora, C.Lumezanu, J.Xu, B.Zong, H.Zhang, G.Jiang and L.Khan
PDF Dataset
An Analytics Approach to Traffic Analysis in Network Virtualization
Network virtualization has been propounded as a diversifying attribute of the future inter-networking paradigm. However, monitoring and …
Hui Zhang, Junghwan Rhee, Nipun Arora, Qiang Xu, Cristian Lumezanu, Guofei Jiang
PDF Dataset Slides
PerfScope: Practical Online Server Performance Bug Inference in Production Cloud Computing Infrastructures
Daniel J. Dean, Hiep Nguyen, Xiaohui Gu, Hui Zhang, Junghwan Rhee, Nipun Arora, Geoff Jiang
PDF Dataset
Enabling Layer 2 Pathlet Tracing through Context Encoding in Software-Defined Networking
Troubleshooting Software-Defined Networks requires a structured approach to detect mistranslations between high-level intent (policy) …
Hui Zhang, Cristian Lumezanu, Junghwan Rhee, Nipun Arora, Qiang Xu, Guofei Jiang
PDF Dataset
IntroPerf: Transparent Context-Sensitive Multi-Layer Performance Inference using System Stack Traces
Performance bugs are frequently observed in commodity software. While profilers or source code-based tools can be used at development …
Chung Hwan Kim, Junghwan Rhee, Hui Zhang, Nipun Arora, Guofei Jiang, Xiangyu Zhang, Dongyan Xu
PDF Dataset
Uscope: A Scalable Unified Tracer from Kernel to User Space
Unified tracing is the process of collecting trace logs across the boundary of kernel and user spaces, and has been used to understand …
Junghwan Rhee, Hui Zhang, Nipun Arora, Kenji Yoshihira, Guofei Jiang
PDF Dataset Slides
Software System Performance Debugging with Kernel Events Feature Guidance
To diagnose performance problems in production systems, many OS kernel-level monitoring and analysis tools have been proposed. Using …
Junghwan Rhee, Hui Zhang, Nipun Arora, Guofei Jiang, Kenji Yoshihira
PDF Dataset
CLUE: System Trace Analytics for Cloud Service Performance Diagnosis
In this paper, we present CLUE, a system event analytics tool for black-box performance diagnosis in production Cloud Computing …
Hui Zhang, Junghwan Rhee, Nipun Arora, Sahan Gamage, Guofei Jiang, Kenji Yoshihira, Dongyan Xu
PDF Dataset Slides
DeltaPath: Precise and Scalable Calling Context Encoding
Calling context provides important information for a large range of applications, such as event logging, profiling, debugging, anomaly …
Qiang Zeng, Junghwan Rhee, Hui Zhang, Nipun Arora, Guofei Jiang, Peng Liu
PDF Dataset Slides
HybNET: Network Manager for Hybrid Network Infrastructure
The emergence of Software-Defined Networking(SDN) has led to a paradigm shift in network management. SDN has the capability to provide …
Hui Lu, Nipun Arora, Hui Zhang, Cristian Lumezanu, Junghwan Rhee, Guofei Jiang
PDF Dataset Slides
iProbe: A Lightweight User-Level Dynamic Instrumentation Framework
Application tracing in production systems requires dynamic and flexible instrumentation mechanisms with lowoverhead. Tracing tools may …
Nipun Arora, Hui Zhang, Junghwan Rhee, Kenji Yoshihira, Geoff Jiang
PDF Dataset Slides Video
Sandboxed, Online Debugging of Production Bugs for SOA Systems
Short time-to-bug localization is extremely important for any 24x7 service-oriented application. To this end, we introduce a new …
Arora, N.
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BEST: A Symbolic Testing Tool for Predicting Multi-threaded Program Failures
We present a tool BEST (Binary instrumentation-based Error-directed Symbolic Testing) for predicting concurrency violations.1 We …
Ganai, M.K., Arora, N., Chao Wang, Gupta, A., Balakrishnan, G.
PDF Dataset
The weHelp Reference Architecture for Community-Driven Recommender Systems
Recommender systems have become increasingly popular. Most research on recommender systems has focused on recommendation algorithms. …
Swapneel Sheth, Nipun Arora, Christian Murphy, Gail Kaiser
PDF Dataset
weHelp: A Reference Architecture for Social Recommender Systems
Recommender systems have become increasingly popular. Most of the re- search on recommender systems has focused on recommendation …
Swapneel Sheth, Nipun Arora, Christian Murphy, Gail Kaiser
PDF Dataset
COMPASS: COMmunity driven Parallelization Advisor for Software Systems
The widespread adoption of multicores has renewed the emphasis on the use of parallelism to improve performance. The present and …
Simha Sethumadhavan, Nipun Arora, Ravindra Babu Ganpathi, John Demme, Gail E Kaiser
PDF Dataset
COMPASS: COMmunity driven Parallelization Advisor for Software Systems
In this poster, we will describe research being done at Columbia University on a system called COMPASS: A community driven …
Nipun Arora, Ravindra Babu Ganpathi, John Demme, Simha Sethumadhavan, Gail E Kaiser