Upload nightly test metrics to GH artifacts (#17696)

python/sglang/test/bench_one_batch_server_internal.py

@@ -109,6 +109,7 @@ class BenchArgs:
     append_to_github_summary: bool = True
     seed: int = 42
     cache_hit_rate: float = 0.0
+    server_args_for_metrics: Optional[List[str]] = None
 
     @staticmethod
     def add_cli_args(parser: argparse.ArgumentParser):
@@ -192,6 +193,13 @@ class BenchArgs:
             help="Cache hit rate for benchmarking (0.0-1.0). "
             "0.0 means no cache hits (flush all), 0.4 means 40%% of input tokens are cached.",
         )
+        parser.add_argument(
+            "--server-args-for-metrics",
+            type=str,
+            nargs="*",
+            default=None,
+            help="Server launch arguments to record in metrics output (for tracking configurations).",
+        )
 
     @classmethod
     def from_cli_args(cls, args: argparse.Namespace):