Factors Affecting Scalability of Multithreaded Java Applications on Manycore Systems

Authors

Junjie Qian, University of Nebraska-LincolnFollow
Du Li, Carnegie Mellon UniversityFollow
Witawas Srisaan, University of Nebraska-LincolnFollow
Hong Jiang, University of Nebraska-LincolnFollow
Sharad C. Seth, University of Nebraska-LincolnFollow

Date of this Version

2015

Citation

Performance Analysis of Systems and Software (ISPASS), 2015 IEEE International Symposium on DOI: 10.1109/ISPASS.2015.7095800 Publication Year: 2015 , Page(s): 167 - 168.

Comments

Copyright © 2015 IEEE. Used by permission.

Abstract

Modern Java applications employ multithreading to improve performance by harnessing execution parallelism available in today’s multicore processors. However, as the numbers of threads and processing cores are scaled up, many applications do not achieve the desired level of performance improvement. In this paper, we explore two factors, lock contention and garbage collection performance that can affect scalability of Java applications. Our initial result reveals two new observations. First, applications that are highly scalable may experience more instances of lock contention than those experienced by applications that are less scalable. Second, efficient multithreading can make garbage collection less effective, and therefore, negatively impacting garbage collection performance.