CI: add benchmark

.github/workflows/benchmarks/build.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+
+set -eu
+
+CMAKE_ARGS=(
+        "-DUSE_CCACHE=ON" \
+        "-DCMAKE_BUILD_TYPE=Release" \
+        "-DCMAKE_INSTALL_PREFIX=/usr" \
+        "-DGDAL_USE_TIFF_INTERNAL=ON" \
+        "-DGDAL_USE_GEOTIFF_INTERNAL=ON" \
+        "-DECW_ROOT=/opt/libecwj2-3.3" \
+        "-DMRSID_ROOT=/usr/local" \
+        "-DFileGDB_ROOT=/usr/local/FileGDB_API" \
+        "-DBUILD_CSHARP_BINDINGS=OFF" \
+        "-DBUILD_JAVA_BINDINGS=OFF" \
+        "-DGDAL_BUILD_OPTIONAL_DRIVERS=OFF" \
+        "-DOGR_BUILD_OPTIONAL_DRIVERS=OFF" \
+        "-DOGR_ENABLE_DRIVER_GPKG=ON" \
+)
+
+cmake ${GDAL_SOURCE_DIR:=..} \
+    "${CMAKE_ARGS[@]}"
+
+make -j$(nproc)
+
+mkdir old_version
+cd old_version
+# To be updated with a true reference branch and commit
+git clone https://github.com/rouault/gdal
+cd gdal
+git checkout 419dc2e64b19964cfe61d9140c4affe8298c475d
+mkdir build
+cd build
+
+cmake .. \
+    "${CMAKE_ARGS[@]}"
+
+make -j$(nproc)

.github/workflows/benchmarks/test.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+set -eu
+
+BENCHMARK_STORAGE="file:///tmp"
+
+(cd old_version/gdal/build; source ../scripts/setdevenv.sh; pytest autotest/benchmark --benchmark-save=ref "--benchmark-storage=${BENCHMARK_STORAGE}" --capture=no -ra -vv)
+
+(source ${GDAL_SOURCE_DIR:=..}/scripts/setdevenv.sh; pytest autotest/benchmark --benchmark-compare-fail="min:5%" --benchmark-compare=0001_ref "--benchmark-storage=${BENCHMARK_STORAGE}" --capture=no -ra -vv)

.github/workflows/linux_build.yml

@@ -90,6 +90,13 @@ jobs:
             build_script: build.sh
             test_script: test.sh
 
+          - name: Ubuntu 20.04, benchmarks
+            id: benchmarks
+            travis_branch: ubuntu_2004
+            container: ubuntu_20.04
+            build_script: build.sh
+            test_script: test.sh
+
           - name: Ubuntu 20.04, Intel compiler
             id: icc
             container: icc
@@ -269,6 +276,13 @@ jobs:
             TEST_CMD="ctest -V -j $(nproc)"
           fi
 
+          if test "${{ matrix.id }}" = "benchmarks"; then
+            if test -f /sys/devices/system/cpu/intel_pstate/no_turbo; then
+              echo "Disable TurboBoost"
+              echo 1 | sudo tee /sys/devices/system/cpu/intel_pstate/no_turbo
+            fi
+          fi
+
           # For cache
           mkdir .gdal