AndroidOSMemory分析

内存使用分析

• DDMS
  • Heap
    • Hprof
      • MAT
        • OQL
          • http://qianjigui.iteye.com/blog/1706898
        • http://qianjigui.iteye.com/blog/1706773
    • Heap Info
    • Alloc Tracker
• Linux Tools
  • procrank
  • ps
  • smaps
    • http://qianjigui.iteye.com/blog/1479109
  • meminfo
• Native Malloc
  • Malloc-Debugger

OS Strategy

• Android OOM Strategy
  • OOM Killer
    • Six Levels
      • FOREGROUND_APP — The application you are currently using
      • VISIBLE_APP — An application that is visible but not in the foreground
      • SECONDAY_SERVER — A process providing services
      • HIDDEN_APP — A process that is hidden, but may be needed by a running program
      • CONTENT_PROVIDER — Apps that provide data to the system (for example, synchronizing with the Market)
      • EMPTY_APP — An application you were using, but is not currently active
  • Strategy
    • http://blog.csdn.net/wuhengde/article/details/8104029
    • ProcessList.java
    • ActivityManagerServer.java
• CopyOnWrite
  • Zygote fork
    • Preload
      • classes
      • Resources
• IPC
  • Binder

App Strategy

• 对象的组合
  • 生命周期
    • 相近的最好一起申请
  • 设计
    • 早清空
      • static
    • finalize少使用
    • SoftReference
      • 处理资源
        • image
    • String.intern
• 整体结构
  • 模块化，可分批load
• API
  • Preload

tags: GC Memory

系统级内存分析的一般方法

• 系统级
  • meminfo
• 程序级
  • procrank
  • ps
• 程序内部级
  • smaps
  • Java_heap
    • DDMS
  • Native Heap
    • Malloc Debugger
  • StrictMode
    • http://www.androidlearner.net/use-strictmode.html

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标签/Tags

• GC 3
• Memory 3

相同类目/Categories