我们有一个基于网络的“ Java”应用程序,在博览会上运行,允许最大比例达到约1.2 英镑(机体记忆为2 GB)。 在某些时候,申请停止(对客户)答复几分钟。 经过一些分析,我们发现,主食是全理事会。 此处摘自全球气候标志:
74477.402: [Full GC [PSYoungGen: 3648K->0K(332160K)] [PSOldGen: 778476K->589497K(819200K)] 782124K->589497K(1151360K) [PSPermGen: 102671K->102671K(171328K)], 646.15468 secs] [times:user=3.84 sys=3.72, real=646.17 secs]
我不理解的是,花在全面GC上的real time大约11分钟(646秒),而user+sys时仅7.5秒。 7.5 转而给我更合理的时间用于清洁和提炼;从老一代人中花费200甲基溴。 其他时间在哪里?
感谢很多。
其他时间在哪里?
您的申请很可能造成虚拟记忆中断。 基本上,你的应用需要比可以保存的实际网页高出许多几页的虚拟记忆。 因此,它花费了大部分时间,等待阅读和书写页。
详情见。
解决办法是减少虚拟记忆的使用,或增加系统的实际记忆。 例如,你可以:
(但注:减少小口径终端的肥皂可以是双向剑。) 如果你减少得太大,则申请要么由外部轨道取代,要么花费太长的时间收集垃圾,要么无法有效地处理物品。
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