关于面试题总结"JMM（Java 内存模型）详解"一文的"从 CPU 缓存模型"小节图片一些个人个人不严谨的地方 #1848

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1. Snailclimb commented on Oct 23, 2022

   

   Snailclimb

   on Oct 23, 2022

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   guide哥绘制的CPU Cache 示意图如图所示:

   参考网上文章，我认为CPU Cache应该分为3级:

   1. L1 cache为CPU私有，相较于其他两种缓存更加接近CPU，访问速度差不多2-4个时钟周期。
   2. L2 cache为CPU私有，访问速度差不多10-20个时钟周期。
   3. L3 Cache，所有物理核共享，是最慢的一级，访问速度差不多20-60个时钟周期。

   由上所述，我建议图片应该改为下面这个样子

   

   详情可参阅:

   1. https://zhuanlan.zhihu.com/p/370057417
   2. 《深入理解高并发编程》 6.1.2 章节CPU多级缓存架构原理
      

   感谢，我这块画的确实不准确，会尽快抽时间完善。
2. Snailclimb commented on Oct 23, 2022

   

   Snailclimb

   on Oct 23, 2022

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   已修正。
   

   👍React with 👍3Reacted by AllinProgram, jxy0216 and xiaoxiaohong
3. Snailclimb

   closed this as completedon Oct 23, 2022
4. Snailclimb

   added

   doc-bugContent errorContent error

   on Oct 23, 2022
5. kindear commented on Sep 26, 2023

   

   kindear

   on Sep 26, 2023

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   good good