用进程资源图检测死锁的步骤为：
- 确认系统剩余资源数，确认非阻塞进程；
- 去掉非阻塞进程的所有边，现成一个孤立的点，再将分配给该进程的资源回收；
- 查看剩余非阻塞进程，重复执行步骤2；
- 最终，所有的资源和进程都变成孤立的点，这样的图叫做“可完全简化”。
如果一个图可完全简化，则不会产生死锁。如果一个图不可完全简化，则会产生死锁。
举例：
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如何免费使用Google Cloud的高性能GPU进行AI训练，做AIGC
最近在搞AIGC相关的东西，各个平台的用了一下，发现还是开源香啊！刚好手上有台配置不错的PC，显卡1080Ti（当年的骨灰级显卡）11GB的显存，跑了一下Stable Diffusion，还行！比大多数付费的搭载SD的服务器都好用。
但性能还是不行，不如专门的搞AI的图形显卡性能好，这就想起了当年用GCP的GPU挖ETH的经历，于是又捡起来了，搭建了Stable Diffusion服务器，性能杠杠的！15GB显存的GPU~
算了，有机会再写吧~~~
话说这些模型生成的图片质量越来越高了！
dump Java Thread 的几种状态及其含义
The values of the Java thread state and the internal VM thread state can be:
- R – Runnable – the thread is able to run when given the chance.
- CW – Condition Wait – the thread is waiting. For example, because:
- The thread has been blocked for I/O
- A wait() method is called to wait on a monitor being notified
- The thread is synchronizing with another thread with a join() call
- S – Suspended – the thread has been suspended by another thread.
- Z – Zombie – the thread has been killed.
- P – Parked – the thread has been parked by the new concurrency API (java.util.concurrent).
- B – Blocked – the thread is waiting to obtain a lock that something else currently owns.