[CI] Publish 4-GPU nightly profiler traces (#28738)

.github/workflows/nightly-test-nvidia.yml

@@ -506,10 +506,33 @@ jobs:
 
       - name: Run test
         timeout-minutes: 200
+        env:
+          TRACE_BASE_URL: https://raw.githubusercontent.com/sglang-bot/sglang-ci-data/main/traces/${{ github.run_id }}
+          PERFETTO_RELAY_URL: ${{ vars.PERFETTO_RELAY_URL }}
+          GPU_CONFIG: "4-gpu-b200"
         run: |
           cd test
           python3 run_suite.py --hw cuda --suite nightly-4-gpu-b200 --nightly --continue-on-error --timeout-per-file 12000
 
+      - name: Publish traces to storage repo
+        if: always()
+        continue-on-error: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_PAT_FOR_NIGHTLY_CI_DATA }}
+          GITHUB_RUN_ID: ${{ github.run_id }}
+          GITHUB_RUN_NUMBER: ${{ github.run_number }}
+        run: |
+          TRACE_ARGS=""
+          for dir in test/performance_profiles_*/; do
+            [ -d "$dir" ] && TRACE_ARGS="$TRACE_ARGS --traces-dir $dir"
+          done
+          if [ -n "$TRACE_ARGS" ]; then
+            python3 scripts/ci/utils/publish_traces.py $TRACE_ARGS
+            find test/performance_profiles_*/ -name '*.json.gz' -delete
+          else
+            echo "No trace directories found, skipping publish"
+          fi
+
       - uses: ./.github/actions/upload-cuda-coredumps
         if: failure()
 
@@ -531,10 +554,33 @@ jobs:
 
       - name: Run test
         timeout-minutes: 600
+        env:
+          TRACE_BASE_URL: https://raw.githubusercontent.com/sglang-bot/sglang-ci-data/main/traces/${{ github.run_id }}
+          PERFETTO_RELAY_URL: ${{ vars.PERFETTO_RELAY_URL }}
+          GPU_CONFIG: "4-gpu-gb300"
         run: |
           cd test
           python3 run_suite.py --hw cuda --suite nightly-4-gpu-gb300 --nightly --continue-on-error --timeout-per-file 7200
 
+      - name: Publish traces to storage repo
+        if: always()
+        continue-on-error: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_PAT_FOR_NIGHTLY_CI_DATA }}
+          GITHUB_RUN_ID: ${{ github.run_id }}
+          GITHUB_RUN_NUMBER: ${{ github.run_number }}
+        run: |
+          TRACE_ARGS=""
+          for dir in test/performance_profiles_*/; do
+            [ -d "$dir" ] && TRACE_ARGS="$TRACE_ARGS --traces-dir $dir"
+          done
+          if [ -n "$TRACE_ARGS" ]; then
+            python3 scripts/ci/utils/publish_traces.py $TRACE_ARGS
+            find test/performance_profiles_*/ -name '*.json.gz' -delete
+          else
+            echo "No trace directories found, skipping publish"
+          fi
+
       - uses: ./.github/actions/upload-cuda-coredumps
         if: failure()