diff --git a/.github/workflows/ci_linux.yml b/.github/workflows/ci_linux.yml
index f470b2b2c7..09d1eb6a48 100644
--- a/.github/workflows/ci_linux.yml
+++ b/.github/workflows/ci_linux.yml
@@ -10,7 +10,7 @@ env:
   proc_num: $(nproc)
 
 jobs:
-  compile-with-make:
+  gcc-compile-with-make:
     runs-on: ubuntu-latest # https://github.com/actions/runner-images
 
     steps:
@@ -19,14 +19,84 @@ jobs:
     - name: install dependences
       run: |
            sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev libgoogle-perftools-dev
-    - name: config_brpc
+    - name: config brpc
       run: |
            ./config_brpc.sh --header="/usr/local/include /usr/include" --libs="/usr/local/lib /usr/local/lib64 /usr/lib /usr/lib64"
     - name: compile
       run: |
            make -j ${{env.proc_num}}
+
+  gcc-compile-with-cmake:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: install dependences
+      run: |
+           sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev
+    - name: cmake 
+      run: |
+           mkdir build
+           cd build
+           cmake ..
+    - name: compile
+      run: |
+           cd build
+           make -j ${{env.proc_num}}
+
+  gcc-compile-with-bazel:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: install dependences
+      run: |
+           sudo apt-get update
+           sudo apt-get install libibverbs-dev
+    - name: compile
+      run: |
+           bazel build -j ${{env.proc_num}} -c opt --copt -DHAVE_ZLIB=1 //...
+  gcc-unittest:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: install dependences
+      run: |
+           sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev libgoogle-perftools-dev
+           sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv lib/libgtest* /usr/lib/
+    - name: config brpc
+      run: |
+           ./config_brpc.sh --header="/usr/local/include /usr/include" --libs="/usr/local/lib /usr/local/lib64 /usr/lib /usr/lib64" --cc=gcc --cxx=g++
+    - name: compile
+      run: |
+           cd test
+           make -j ${{env.proc_num}}
+    - name: run tests
+      run: |
+           cd test
+           sh ./run_tests.sh
+
    
-  compile-with-cmake:
+  clang-compile-with-make:
+    runs-on: ubuntu-latest # https://github.com/actions/runner-images
+
+    steps:
+    - uses: actions/checkout@v2
+    
+    - name: install dependences
+      run: |
+           sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev libgoogle-perftools-dev
+    - name: config brpc
+      run: |
+           ./config_brpc.sh --header="/usr/local/include /usr/include" --libs="/usr/local/lib /usr/local/lib64 /usr/lib /usr/lib64" --nodebugsymbols --cxx=clang++ --cc=clang
+    - name: compile
+      run: |
+           make -j ${{env.proc_num}}
+
+  clang-compile-with-cmake:
     runs-on: ubuntu-latest
 
     steps:
@@ -37,6 +107,8 @@ jobs:
            sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev
     - name: cmake 
       run: |
+           export CC=clang
+           export CXX=clang++
            mkdir build
            cd build
            cmake ..
@@ -44,8 +116,8 @@ jobs:
       run: |
            cd build
            make -j ${{env.proc_num}}
-           
-  compile-with-bazel:
+
+  clang-compile-with-bazel:
     runs-on: ubuntu-latest
 
     steps:
@@ -57,4 +129,27 @@ jobs:
            sudo apt-get install libibverbs-dev
     - name: compile
       run: |
+           export CC=clang
+           export CXX=clang++
            bazel build -j ${{env.proc_num}} -c opt --copt -DHAVE_ZLIB=1 //...
+
+  clang-unittest:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: install dependences
+      run: |
+           sudo apt-get install -y git g++ make libssl-dev libgflags-dev libprotobuf-dev libprotoc-dev protobuf-compiler libleveldb-dev libgoogle-perftools-dev
+           sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv lib/libgtest* /usr/lib/
+    - name: config brpc
+      run: |
+           ./config_brpc.sh --header="/usr/local/include /usr/include" --libs="/usr/local/lib /usr/local/lib64 /usr/lib /usr/lib64" --cc=clang --cxx=clang++
+    - name: compile
+      run: |
+           cd test
+           make -j ${{env.proc_num}}
+    - name: run tests
+      run: |
+           cd test
+           sh ./run_tests.sh
diff --git a/docs/cn/getting_started.md b/docs/cn/getting_started.md
index d841cbcdc6..0e4d7aaea2 100644
--- a/docs/cn/getting_started.md
+++ b/docs/cn/getting_started.md
@@ -16,7 +16,7 @@ brpc有如下依赖：
 * [Fedora/CentOS](#fedoracentos)
 * [自己构建依赖的Linux](#自己构建依赖的Linux)
 * [MacOS](#macos)
-* [docker][#docker]
+* [docker](#docker)
 
 ## Ubuntu/LinuxMint/WSL
 ### 依赖准备
@@ -38,7 +38,7 @@ sudo apt-get install -y libgoogle-perftools-dev
 
 如果你要运行测试，那么要安装并编译libgtest-dev（它没有被默认编译）：
 ```shell
-sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv libgtest* /usr/lib/ && cd -
+sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv lib/libgtest* /usr/lib/ && cd -
 ```
 gtest源码目录可能变动，如果`/usr/src/gtest`不存在，请尝试`/usr/src/googletest/googletest`。
 
diff --git a/docs/cn/mbvar_c++.md b/docs/cn/mbvar_c++.md
index cee99bba53..c68f95d76d 100644
--- a/docs/cn/mbvar_c++.md
+++ b/docs/cn/mbvar_c++.md
@@ -186,7 +186,7 @@ class MVariable {
 };
 ```
 
-最常见的导出需求是通过HTTP接口查询和写入本地文件，多维度统计暂时不提供HTTP接口方式查询，后者已经在bvar中实现了，由用户选择开启，该功能由下面5个gflags控制，你的程序需要使用gflags。
+最常见的导出需求是通过HTTP接口查询和写入本地文件，多维度统计支持通过内置服务`/brpc_metrics`接口方式查询。也支持写入本地文件，该功能由下面5个gflags控制，你的程序需要使用gflags。
 
 | 名称 | 默认值 | 描述 |
 | ------ | ------ | ------ |
diff --git a/docs/en/getting_started.md b/docs/en/getting_started.md
index f704df9191..40d6888363 100644
--- a/docs/en/getting_started.md
+++ b/docs/en/getting_started.md
@@ -38,7 +38,7 @@ sudo apt-get install -y libgoogle-perftools-dev
 
 If you need to run tests, install and compile libgtest-dev (which is not compiled yet):
 ```shell
-sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv libgtest* /usr/lib/ && cd -
+sudo apt-get install -y cmake libgtest-dev && cd /usr/src/gtest && sudo cmake . && sudo make && sudo mv lib/libgtest* /usr/lib/ && cd -
 ```
 The directory of gtest source code may be changed, try `/usr/src/googletest/googletest` if `/usr/src/gtest` is not there.