diff --git a/.circleci/config.yml b/.circleci/config.yml
index 9e8de80ba..fc1945ec4 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -48,7 +48,7 @@ jobs:
       - run: |
           echo "Build and run utest for SRS" &&
           cd trunk && ./configure --gb28181=on --utest=on --gcov=on && make &&
-          ./objs/srs_utest && bash auto/coverage.sh
+          ./objs/srs_utest && bash auto/codecov.sh
   run-regression-test:
     docker:
       - image: ossrs/srs:dev
diff --git a/trunk/auto/coverage.sh b/trunk/auto/codecov.sh
old mode 100644
new mode 100755
similarity index 100%
rename from trunk/auto/coverage.sh
rename to trunk/auto/codecov.sh
diff --git a/trunk/auto/fast.sh b/trunk/auto/fast.sh
new file mode 100755
index 000000000..485611792
--- /dev/null
+++ b/trunk/auto/fast.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+
+MODULES=""
+if [[ $# -gt 0 ]]; then
+  for module in $@; do
+    module=$(basename $module)
+    if [[ $module == "src" ]]; then
+      MODULES="objs/src"
+      break
+    fi
+    MODULES="$MODULES objs/src/$module"
+  done
+fi
+
+if [[ $MODULES == "" ]]; then
+  MODULES="objs/src"
+fi
+
+IS_LINUX=yes
+uname -s|grep Darwin >/dev/null && IS_DARWIN=yes && IS_LINUX=no
+echo "IS_LINUX: $IS_LINUX, IS_DARWIN: $IS_DARWIN"
+
+echo "Clean gcda files"
+find objs -name *.gcda |xargs rm -f
+
+echo "Build and run utest"
+make -j10 && ./objs/srs_utest
+
+echo "Generating coverage at $MODULES"
+mkdir -p ./objs/coverage &&
+gcovr -r src --html --html-details -o ./objs/coverage/srs.html $MODULES &&
+echo "Coverage report at ./objs/coverage/srs.html" &&
+open ./objs/coverage/srs.html