diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index ff1d72c25f0..d7ee4dc886b 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -106,23 +106,23 @@ jobs:
               cmake \
                   -DCMAKE_CXX_COMPILER=$TOOLSET_GCC_DIR/bin/g++ \
                   -DCMAKE_C_COMPILER=$TOOLSET_GCC_DIR/bin/gcc \
+                  -DNEBULA_USE_LINKER=mold \
                   -DCMAKE_BUILD_TYPE=Release \
                   -DENABLE_TESTING=on \
                   -GNinja \
                   -B build
-              echo "::set-output name=j::8"
               ;;
             ubuntu2004)
               # build with Debug type
               cmake \
                   -DCMAKE_CXX_COMPILER=$TOOLSET_GCC_DIR/bin/g++ \
                   -DCMAKE_C_COMPILER=$TOOLSET_GCC_DIR/bin/gcc \
+                  -DNEBULA_USE_LINKER=mold \
                   -DCMAKE_BUILD_TYPE=Debug \
                   -DENABLE_TESTING=on \
                   -DENABLE_COVERAGE=on \
                   -GNinja \
                   -B build
-              echo "::set-output name=j::8"
               ;;
             esac
             ;;
@@ -131,13 +131,13 @@ jobs:
             cmake \
                 -DCMAKE_CXX_COMPILER=$TOOLSET_CLANG_DIR/bin/clang++ \
                 -DCMAKE_C_COMPILER=$TOOLSET_CLANG_DIR/bin/clang \
+                -DNEBULA_USE_LINKER=mold \
                 -DCMAKE_BUILD_TYPE=RelWithDebInfo \
                 -DENABLE_MEMORY_TRACKER=off \
                 -DENABLE_ASAN=on \
                 -DENABLE_TESTING=on \
                 -GNinja \
                 -B build
-            echo "::set-output name=j::4"
             ;;
           esac
       - name: Make
@@ -154,7 +154,7 @@ jobs:
             ubuntu2004)
               # build with Debug type
               ccache -z
-              ninja -j $(($(nproc)/2+1))
+              ninja -j $(nproc)
               ccache -s
               ;;
             esac
@@ -199,17 +199,17 @@ jobs:
         timeout-minutes: 4
       - name: Pytest
         run: |
-          make RM_DIR=false DEBUG=false J=${{ steps.cmake.outputs.j }} test
+          make RM_DIR=false DEBUG=false J=8 test
         working-directory: tests/
         timeout-minutes: 15
       - name: TCK
         run: |
-          make RM_DIR=false DEBUG=false ENABLE_FT_INDEX=true ES_ADDRESS='"elasticsearch":9200' J=${{ steps.cmake.outputs.j }} tck
+          make RM_DIR=false DEBUG=false ENABLE_FT_INDEX=true ES_ADDRESS='"elasticsearch":9200' J=8 tck
         working-directory: tests/
         timeout-minutes: 60
       - name: LDBC
         run: |
-          make RM_DIR=false DEBUG=false J=${{ steps.cmake.outputs.j }} ldbc
+          make RM_DIR=false DEBUG=false J=8 ldbc
         working-directory: tests/
         timeout-minutes: 60
       - name: Down cluster