Fixing timing test runner

.gitea/workflows/Matrix-Timing.yaml

@@ -1,4 +1,4 @@
-name: Merge-Checker
+name: Benchmarking
 
 on:
   pull_request:
@@ -7,7 +7,7 @@ on:
         - 'unit-tests/timing-results/**'
 
 jobs:
-  build_and_test:
+  benchmarking:
     runs-on: ubuntu-latest
 
     steps:
@@ -39,43 +39,62 @@ jobs:
             echo "matrix-timing-tests executable not found or not executable"
             exit 1
           fi
+
       - name: Compare timing results
         id: check_diff
         run: |
-          # Ensure the previous version exists (from git)
           git show origin/${{ github.event.pull_request.head.ref }}:unit-tests/timing-results/matrix-timing-tests.txt > old.txt || echo "" > old.txt
           cp unit-tests/timing-results/matrix-timing-tests.txt new.txt
 
-          echo "Comparing timing results..."
+          echo "Comparing timing results for changes ≥ 0.1s (ignoring 'Timing Tests' lines)..."
 
-          CHANGED=0
-          awk '
-            BEGIN { change_threshold=0.1 }
-            /^[0-9]+\.[0-9]+ s: / {
-              new_time = $1
+          changed=0
+
+          awk -v changed_ref=/tmp/timings_changed.flag '
+            BEGIN {
+              change_threshold = 0.1
+            }
+            FILENAME == "old.txt" && /^[0-9]+\.[0-9]+ s: / {
               label = substr($0, index($0, ":") + 2)
-              if (label_times[label]) {
-                old_time = label_times[label]
-                delta = new_time - old_time
-                if (delta < 0) delta = -delta
-                if (delta >= change_threshold) {
-                  changed = 1
-                }
-              } else {
-                changed = 1
+              if (label != "Timing Tests") {
+                label_times[label] = $1
               }
             }
-            FILENAME=="old.txt" && /^[0-9]+\.[0-9]+ s: / {
+            FILENAME == "new.txt" && /^[0-9]+\.[0-9]+ s: / {
+              new_time = $1
               label = substr($0, index($0, ":") + 2)
-              label_times[label] = $1
+              if (label == "Timing Tests") next
+
+              old_time = label_times[label]
+              delta = new_time - old_time
+              if (delta < 0) delta = -delta
+
+              if (old_time != "" && delta >= change_threshold) {
+                printf "⚠️  %.3f s → %.3f s: %s (Δ=%.3f s)\n", old_time, new_time, label, delta
+                system("touch " changed_ref)
+              } else if (old_time == "") {
+                printf "🆕 New timing entry: %.3f s: %s\n", new_time, label
+                system("touch " changed_ref)
+              }
             }
             END {
-              exit changed == 1 ? 0 : 1
+              if (!system("test -f " changed_ref)) {
+                exit 0
+              } else {
+                print "✅ Timings haven’t changed significantly (Δ < 0.1s)."
+                exit 0
+              }
             }
           ' old.txt new.txt
 
+          if [ -f /tmp/timings_changed.flag ]; then
+            echo "timings_changed=true" >> $GITHUB_OUTPUT
+          else
+            echo "timings_changed=false" >> $GITHUB_OUTPUT
+          fi
+
       - name: Commit and push timing results
-        if: steps.check_diff.outcome == 'success' && github.event.pull_request.head.repo.full_name == github.repository
+        if: steps.check_diff.outputs.timings_changed == 'true' && github.event.pull_request.head.repo.full_name == github.repository
         run: |
           git config --global user.name "ci-bot"
           git config --global user.email "ci-bot@local"