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<!DOCTYPE HTML>
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<title>Lotte's Blog</title>
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<h1 class="site-name"><a href="/" title="Lotte's Blog">Lotte's Blog</a></h1>
<h2 class="blog-motto">探索、记录、分享、生活</h2>
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<section class="post" itemscope itemprop="blogitem">
<a href="/2019/10/28//D_state_processes_stuck_in_shrink_inactive_list.html/" title="一个非常规性能 BUG 分析: 大量 D 进程卡在 shrink_inactive_list" itemprop="url">
<h1 itemprop="name">一个非常规性能 BUG 分析: 大量 D 进程卡在 shrink_inactive_list</h1>
<p itemprop="description" >Description一个项目中偶现几十上百个 D 进程卡住在 shrink_inactive_list，导致卡顿/卡死/android SWT 等问题，前前后后，提交了 3 次修复，还没有彻底解决。
山重水复疑无路LOG：
123456789101112131415161718</p>
<time datetime="2019-10-28T05:51:34.571Z" itemprop="datePublished">2019-10-28</time>
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<a href="/2019/10/23//linux-dead-lock-detect-lockdep.html/" title="Linux 死锁检测模块 Lockdep 简介" itemprop="url">
<h1 itemprop="name">Linux 死锁检测模块 Lockdep 简介</h1>
<p itemprop="description" >死锁概念死锁是指多个进程（线程）因为长久等待已被其他进程占有的的资源而陷入阻塞的一种状态。当等待的资源一直得不到释放，死锁会一直持续下去。死锁一旦发生，程序本身是解决不了的，只能依靠外部力量使得程序恢复运行，例如重启，开门狗复位等。
Linux 提供了检测死锁的机制，主要分为 D</p>
<time datetime="2019-10-23T06:28:30.883Z" itemprop="datePublished">2019-10-23</time>
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<a href="/2019/10/23//qcom_dump_ftrace_and_using_kernelshark.html/" title="高通 dump ftrace & kernelshark 使用" itemprop="url">
<h1 itemprop="name">高通 dump ftrace & kernelshark 使用</h1>
<p itemprop="description" >简介高通 ramdump 可以解析出 ftrace，方便用于追踪 快省稳 问题。kernelshark 是一个可以查看 trace event 的图形化工具，方便梳理和观察内核微观行为。trace-cmd 是设置读取 ftrace 的命令行工具，kernelshark既可以记录数</p>
<time datetime="2019-10-23T06:28:30.883Z" itemprop="datePublished">2019-10-23</time>
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<h1 itemprop="name">Hello World</h1>
<p itemprop="description" >Welcome to Hexo! This is your very first post. Check documentation for more info. If you get any problems when using Hexo, you can find the </p>
<time datetime="2019-10-23T03:03:11.715Z" itemprop="datePublished">2019-10-23</time>
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<li><a href="/categories/性能与稳定性/BUG分析/" title="BUG分析">BUG分析<sup>1</sup></a></li>
<li><a href="/categories/性能与稳定性/" title="性能与稳定性">性能与稳定性<sup>3</sup></a></li>
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<a href="http://kernel.meizu.com/" target="_blank" title="魅族内核团队">魅族内核团队</a>
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<li>
<a href="http://blog.csdn.net/jianchi88" target="_blank" title="my old blog">my old blog</a>
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<a href="http://wuchong.me/" target="_blank" title="Jark's Blog">Jark's Blog</a>
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<a href="http://blog.xiaohansong.com/" target="_blank" title="xiaohansong">xiaohansong</a>
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<p> Hello ,I'm Lotte-Bai in MEIZU. <br/>
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