[Feature] Support LoRA path renaming and add LoRA serving benchmarks (#1433)

python/sglang/srt/server_args.py

@@ -24,6 +24,17 @@ from typing import List, Optional, Union
 logger = logging.getLogger(__name__)
 
 
+class LoRAPathAction(argparse.Action):
+    def __call__(self, parser, namespace, values, option_string=None):
+        setattr(namespace, self.dest, {})
+        for lora_path in values:
+            if "=" in lora_path:
+                name, path = lora_path.split("=", 1)
+                getattr(namespace, self.dest)[name] = path
+            else:
+                getattr(namespace, self.dest)[lora_path] = lora_path
+
+
 @dataclasses.dataclass
 class ServerArgs:
     # Model and tokenizer
@@ -532,7 +543,8 @@ class ServerArgs:
             type=str,
             nargs="*",
             default=None,
-            help="The list of LoRA adapters.",
+            action=LoRAPathAction,
+            help="The list of LoRA adapters. You can provide a list of either path in str or renamed path in the format {name}={path}",
         )
         parser.add_argument(
             "--max-loras-per-batch",