diff --git a/autotest.sh b/autotest.sh
index e7d54d0fa..3c911a7bd 100755
--- a/autotest.sh
+++ b/autotest.sh
@@ -324,7 +324,11 @@ trap - SIGINT SIGTERM EXIT
 # catch any stray core files
 process_core
 
-if hash lcov; then
+# lcov takes considerable time to process clang coverage.
+# Disabling lcov allow us to do this.
+# More information: https://github.com/spdk/spdk/issues/1693
+CC_TYPE=$(grep CC_TYPE mk/cc.mk)
+if hash lcov && ! [[ "$CC_TYPE" == *"clang"* ]]; then
 	# generate coverage data and combine with baseline
 	$LCOV -q -c -d $src -t "$(hostname)" -o $out/cov_test.info
 	$LCOV -q -a $out/cov_base.info -a $out/cov_test.info -o $out/cov_total.info
diff --git a/test/unit/unittest.sh b/test/unit/unittest.sh
index f55290edd..c2264bb97 100755
--- a/test/unit/unittest.sh
+++ b/test/unit/unittest.sh
@@ -221,7 +221,11 @@ if grep -q '#define SPDK_CONFIG_VHOST 1' $rootdir/include/spdk/config.h; then
 fi
 
 # local unit test coverage
-if [ "$cov_avail" = "yes" ]; then
+# lcov takes considerable time to process clang coverage.
+# Disabling lcov allow us to do this.
+# More information: https://github.com/spdk/spdk/issues/1693
+CC_TYPE=$(grep CC_TYPE mk/cc.mk)
+if [ "$cov_avail" = "yes" ] && ! [[ "$CC_TYPE" == *"clang"* ]]; then
 	$LCOV -q -d . -c -t "$(hostname)" -o $UT_COVERAGE/ut_cov_test.info
 	$LCOV -q -a $UT_COVERAGE/ut_cov_base.info -a $UT_COVERAGE/ut_cov_test.info -o $UT_COVERAGE/ut_cov_total.info
 	$LCOV -q -a $UT_COVERAGE/ut_cov_total.info -o $UT_COVERAGE/ut_cov_unit.info