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1、什么时候触发垃圾回收? 垃圾回收器周期性运行,如果分配的内存非常多,那么回收工作也会很艰巨,确 定垃圾回收时间间隔就变成了一个值得思考的问题。 IE6 的垃圾回收是根据内存分配量运行的,当环境中的变量,对象,字符串达到 一定数量时触发垃圾回收。垃圾回收器一直处于工作状态,严重影响浏览器性能。 IE7 中,垃圾回收器会根据内存分配量与程序占用内存的比例进行动态调整,开 始回收工作。 2、合理的 GC 方案:(1)、遍历所有可访问的对象; (2)、回收已不可访问的对象。 3、GC 缺陷:(1)、停止响应其他操作; 4、GC 优化策略:(1)、分代回收(Generation GC);(2)、增量 GC
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The text was updated successfully, but these errors were encountered: