add faq.md

site/src/site/sphinx/en/faq.md

@@ -0,0 +1,26 @@
+## FAQ
+
+
+> For questions that are not in this list, please search in issues. [https://github.com/alibaba/arthas/issues](https://github.com/alibaba/arthas/issues)
+
+##### How much impact does Arthas attach have on the performance of the original process?
+
+[https://github.com/alibaba/arthas/issues/44](https://github.com/alibaba/arthas/issues/44)
+
+
+##### How to view the result in `json` format
+
+```bash
+options json-format true
+```
+
+See more at [options](options.md)
+
+
+##### Can arthas trace native methods
+
+No.
+
+##### Can arthas view the value of a variable in memory?
+
+No. But you can use some tricks to intercept the object with the `tt` command, or fetch it from a static method.

site/src/site/sphinx/en/index.md

@@ -53,8 +53,8 @@ Contents
 * [Arthas Spring Boot Starter](spring-boot-starter.md)
 * [IDEA Plugin](idea-plugin.md)
 * [User cases](https://github.com/alibaba/arthas/issues?q=label%3Auser-case)
-* [Questions and answers](https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered)
-* [Fork me at GitHub](https://github.com/alibaba/arthas)
+* [FAQ](faq.md)
+* [Star me at GitHub](https://github.com/alibaba/arthas)
 * [Compile and debug/CONTRIBUTING](https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md#)
 * [Release Notes](https://github.com/alibaba/arthas/releases)
 * [Contact us](contact-us.md)

site/src/site/sphinx/faq.md

@@ -0,0 +1,28 @@
+
+## FAQ
+
+
+> 不在本列表里的问题，请到issue里搜索。 [https://github.com/alibaba/arthas/issues](https://github.com/alibaba/arthas/issues)
+
+##### Arthas attach之后对原进程性能有多大的影响
+
+[https://github.com/alibaba/arthas/issues/44](https://github.com/alibaba/arthas/issues/44)
+
+
+##### 怎么以`json`格式查看结果
+
+```bash
+options json-format true
+```
+
+更多参考 [options](options.md)
+
+
+##### Arthas能否跟踪 native 函数
+
+不能。
+
+
+##### 能不能查看内存里某个变量的值
+
+不能。但可以用一些技巧，用`tt`命令拦截到对象，或者从静态函数里取到对象。

site/src/site/sphinx/index.md

@@ -44,8 +44,8 @@ Contents
 * [Arthas Spring Boot Starter](spring-boot-starter.md)
 * [IDEA 插件](idea-plugin.md)
 * [用户案例](https://github.com/alibaba/arthas/issues?q=label%3Auser-case)
-* [常见问题](https://github.com/alibaba/arthas/issues?q=label%3Aquestion-answered)
-* [Fork me at GitHub](https://github.com/alibaba/arthas)
+* [FAQ/常见问题](faq.md)
+* [Star me at GitHub](https://github.com/alibaba/arthas)
 * [编译调试/参与贡献](https://github.com/alibaba/arthas/blob/master/CONTRIBUTING.md#)
 * [Release Notes](https://github.com/alibaba/arthas/releases)
 * [QQ群/钉钉群](contact-us.md)