Tprofile 会影响class被热替换后的性能

最近，我们在项目中新增了Tprofile进行运行时性能数据的收集，但是发现当我们在运行的时候进行部分（一般是在线解决bug，只针对1-2个class）class文件热更新（使用Instrumentation.addTransformer 和 Instrumentation.retransformClasses）后，服务器运行明显变慢，并且可以排除各种IO的影响，严重的服务器只能重启才能解决问题。

Start by reproducing the slowdown after hot-updating one or two classes with Instrumentation.addTransformer and retransformClasses, while excluding I/O effects as described. Trace TProfiler's runtime performance-data collection around that sequence; done means the post-retransformation server performance no longer degrades or the remaining cause is isolated.

Written by the indexing model from the issue text.