File system-based deduplication File system-based deduplication is a simple method to reduce duplicate data at the file level, and usually is just a compare operation within the file system or a file system-based algorithm that eliminates duplicates. An example of this method is comparing the name, size, type and date-modified information of two files with… Continue reading file deduplication
Month: January 2019
G1GC LOG
G1提供了两种GC模式，Young GC和Mixed GC，两种都是完全Stop The World的。 * Young GC：选定所有年轻代里的Region。通过控制年轻代的region个数，即年轻代内存大小，来控制young GC的时间开销。 * Mixed GC：选定所有年轻代里的Region，外加根据global concurrent marking统计得出收集收益高的若干老年代Region。在用户指定的开销目标范围内尽可能选择收益高的老年代Region。 内容来源于: Java Hotspot G1 GC的一些关键技术