Análise do impacto do coletor de lixo da linguagem de programação Go e seu impacto na latência e vazão das aplicações

Abstract

Unlike programming languages like Java, the Go language only has one garbage collection algorithm implemented in the official distribution. However, this algorithm can be adjusted through environment variables. In this work we seek to evaluate the behavior of the Go language garbage collector in terms of throughput and latency. The objective is to understand whether it is justifiable for the language to have only one garbage collector available. Data generated from the execution of renowned benchmarks of the Java language were used, which are a reference in works on the impacts of garbage collection. Such benchmarks are executed with different GOGC values, variable that allow customizing the frequency of collector execution, varying 20 times in the range of 50 to 1000. The results showed that parameterizing garbage collection did not obtain improvements in the chosen analyses. However, for applications with high use of garbage collection, a specific reduction in execution time was obtained. Future work includes implementing different garbage collectors for Go and comparing them in different scenarios with the current collector.