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                合規國際互聯網加速 OSASE為企業客戶提供高速穩定SD-WAN國際加速解決方案。 廣告
                # 經典的垃圾收集器 串行:Serial/Serial Old 并行:ParNew/Parallel Scavenge/Parallel Old 并發:CMS/G1 新時代:ZGC/Shenandoah/Zing/Epsilon GC ### 經典垃圾收集器的收集范圍 ![](https://img.kancloud.cn/52/c8/52c8b5f31b9198a7a679f5c37ccee8e4_1142x244.png) 經典垃圾收集器的使用組合方式: ![](https://img.kancloud.cn/86/b3/86b3be5d78f2763fff2cb6717a066ab8_869x454.png) * 紅色虛線是JDK8中廢棄了的組合方式,但是并不是說就不能這么使用了(JDK9之后就完全不能按照紅線的方式組合使用了) * CMS和Serial Old的組合中,是由于CMS是并發的垃圾收集器,需要在垃圾滿之前回收,否則會回收失敗,當回收失敗之后,需要Serial Old來頂上進行垃圾回收 * 綠色的虛線是JDK14中棄用了Parallel Scavenge和Serial Old的組合方式 * JDK14中移除了CMS * **JDK9之后G1變為默認的垃圾收集器** * **JDK8中默認使用Prallel Scavenge和Parallel Old**
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