BestGC: An Automatic GC Selector

Garbage collection algorithms are widely used in programming languages like Java. However, selecting the most suitable garbage (GC) algorithm for an application is a complex task since they behave differently regarding crucial performance metrics such as pause time, throughput, and memory usage. This challenge particularly more complicated there currently no available tool to assist users/developers this critical decision-making process. In paper, we address pressing need by conducting extensive evaluation of four GCs (G1, Parallel, Shenandoah, ZGC) OpenJDK, considering GC various heap sizes. Building upon evaluation, present BestGC, novel system that suggests solution based on user-defined goals terms throughput time. Our BestGC using multiple workloads demonstrates its effectiveness suggesting category (concurrent or generational/non-fully concurrent GC) approximately 86% experiments average. Additionally, accurately identifies best 52% cases Even situations where failed suggest exact category, suggested still outperforms default (G1) JDK, exhibiting average improvement 1.75%. Notably, designed be easily extensible, facilitating compatibility with other JDK versions, well new By addressing lack practical aid selection, our research makes significant contribution field optimization Java applications.