setup BenchmarkCI

.github/workflows/benchmark.yml

@@ -0,0 +1,26 @@
+name: Run benchmarks
+
+on:
+  pull_request:
+
+jobs:
+  Benchmark:
+    runs-on: ubuntu-latest
+    env:
+      JULIA_DEBUG: BenchmarkCI
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: 1.3
+      - name: Install dependencies
+        run: julia -e 'using Pkg; pkg"add PkgBenchmark https://github.com/tkf/BenchmarkCI.jl"'
+      - name: Run benchmarks
+        run: julia -e 'using BenchmarkCI; BenchmarkCI.judge(baseline = "HEAD")'
+        env:
+          # Add project root directory `.` to the load path:
+          JULIA_LOAD_PATH: '@:.:'
+      - name: Post results
+        run: julia -e "using BenchmarkCI; BenchmarkCI.postjudge()"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -3,4 +3,6 @@
 *.jl.mem
 docs/build
 docs/site
-Manifest.toml
+/Manifest.toml
+/.benchmarkci
+/benchmark/*.json

benchmark/.gitignore

@@ -0,0 +1 @@
+/Manifest.toml

benchmark/Project.toml

@@ -0,0 +1,5 @@
+[deps]
+BenchmarkTools = "6e4b80f9-dd63-53aa-95a3-0cdb28fa8baf"
+ImageFiltering = "6a3955dd-da59-5b1f-98d4-e7296123deb5"
+PkgBenchmark = "32113eaa-f34f-5b0d-bd6c-c81e245fc73d"
+Statistics = "10745b16-79ce-11e8-11f9-7d13ad32a3b2"

benchmark/benchmarks.jl

@@ -1,4 +1,19 @@
 using ImageFiltering
 using PkgBenchmark
+using BenchmarkTools
+using Statistics: quantile, mean, median!
 
-include("mapwindow.jl")
+SUITE = BenchmarkGroup()
+SUITE["mapwindow"] = BenchmarkGroup()
+
+let grp = SUITE["mapwindow"]
+    img1d = randn(1000)
+    img2d = randn(30,30)
+    img3d = randn(10,11,12)
+    grp["cheap f, tiny window"] = @benchmarkable mapwindow(first, $img1d, (1,))
+    grp["extrema"] = @benchmarkable mapwindow(extrema, $img2d, (5,5))
+    grp["median!"] = @benchmarkable mapwindow(median!, $img2d, (5,5))
+    grp["mean, small window"] = @benchmarkable mapwindow(mean, $img1d, (3,))
+    grp["mean, large window"] = @benchmarkable mapwindow(mean, $img3d, (5,5,5))
+    grp["expensive f"] = @benchmarkable mapwindow(x -> quantile(vec(x), 0.7), $img3d, (3,3,3))
+end