关键词: 缓冲区 输入输出 性能 基因序列搜索

Abstract:

The cross-platform feature of the Java language enables Java to be widely used in many areas. Meanwhile,the performance of Java applications, especial ly the I/O performance, is also a hot topic. In this paper, a bioinformatics applica- tion is used as an example to demonstrate how to use the I/O buffer to improve the I/O performance of Java applications. The authors use three different ways＇of using the 1/0 buffer to implement the bioirfformatics ap pplication. The comparison a- mong the performances of the three different implementations is discussed. And the authors also compare the performances o f the three implementations with that of the corresponding C＋＋ application. Many experiments show that the I/O buffer has h remarkable effect on the I  I/O performance of Java applications. By using I/O buffers appropriately, the I/O perform- ance of Java applications can be higher than that of the C＋ ＋ applications in some cases.

Key words: buffer, I/0, performance, Motif search