Paddle 启动报Fail to fscanf的warning，非常多

[ZHUI]

Describe the bug (描述bug)

19039 tests/llm/test_gradio.py::UITest::test_argument W0509 19:57:55.627235 81957 default_variables.cpp:95] Fail to fscanf: Success [0]
19040 W0509 19:57:55.659641 82036 default_variables.cpp:95] Fail to fscanf: Success [0]
19041 W0509 19:57:55.715762 82094 default_variables.cpp:95] Fail to fscanf: Success [0]
19042 W0509 19:57:55.776006 82226 default_variables.cpp:95] Fail to fscanf: Success [0]
19043 W0509 19:57:56.627295 81957 default_variables.cpp:95] Fail to fscanf: Success [0]
19044 W0509 19:57:56.659693 82036 default_variables.cpp:95] Fail to fscanf: Success [0]
19045 W0509 19:57:56.715819 82094 default_variables.cpp:95] Fail to fscanf: Success [0]
19046 W0509 19:57:56.776051 82226 default_variables.cpp:95] Fail to fscanf: Success [0]
19047 W0509 19:57:57.627346 81957 default_variables.cpp:95] Fail to fscanf: Success [0]
19048 W0509 19:57:57.659759 82036 default_variables.cpp:95] Fail to fscanf: Success [0]
To Reproduce (复现方法)

Expected behavior (期望行为)

Versions (各种版本)
OS:
Compiler:
brpc:
protobuf:

Additional context/screenshots (更多上下文/截图)

[yanglimingcn]

这个统计来自于linux的这个链接 http://man7.org/linux/man-pages/man5/proc.5.html，我们的linux系统都是比较正常的，看看你那边的环境还有啥差异吗？