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An Efficient Memory System for Java


Li Richard C. L., Fong Anthony S. S.


Vol. 7  No. 6  pp. 146-154


One of the significant issues that hinder the performance of Java program execution is dynamic memory usage. Some researchers stated that in executing Java programs, 15.58% of the CPU time is used in handling memory allocation requests and 28.08% of the CPU time in garbage collection. A statistical study on the dynamic memory usage behavior of both desktops and servers, Java applications show similar locality, and that memory allocation requests are concentrated on small block sizes (< 1K bytes), and blocks allocated usually have short life times. Based on these findings, we proposed a hardware/software approach in handling memory allocation and deallocation requests that gives a 17% overall performance gain in Java program execution.


Java, dynamic memory management, memory allocation, memory deallocation