Improve `send_sone` script (#11817)

python/sglang/test/send_one.py

@@ -12,6 +12,7 @@ import dataclasses
 import json
 
 import requests
+import tabulate
 
 from sglang.profiler import run_profile
 
@@ -141,12 +142,16 @@ def send_one_prompt(args):
     )
 
     if args.stream:
+        last_len = 0
         for chunk in response.iter_lines(decode_unicode=False):
             chunk = chunk.decode("utf-8")
             if chunk and chunk.startswith("data:"):
                 if chunk == "data: [DONE]":
                     break
                 ret = json.loads(chunk[5:].strip("\n"))
+                chunk_str = ret["text"][last_len:]
+                last_len = len(ret["text"])
+                print(chunk_str, end="", flush=True)
     else:
         ret = response.json()
 
@@ -157,21 +162,25 @@ def send_one_prompt(args):
         print(ret)
         return 0, 0
 
-    latency = ret["meta_info"]["e2e_latency"]
-
-    if "spec_verify_ct" in ret["meta_info"]:
+    if "spec_verify_ct" in ret["meta_info"] and ret["meta_info"]["spec_verify_ct"] > 0:
         acc_length = (
             ret["meta_info"]["completion_tokens"] / ret["meta_info"]["spec_verify_ct"]
         )
     else:
         acc_length = 1.0
 
+    latency = ret["meta_info"]["e2e_latency"]
     speed = ret["meta_info"]["completion_tokens"] / latency
+    tokens = ret["meta_info"]["completion_tokens"]
+
+    if not args.stream:
+        print(ret["text"])
 
-    print(ret["text"])
     print()
-    print(f"{acc_length=:.2f}")
-    print(f"{speed=:.2f} token/s")
+    headers = ["Latency (s)", "Tokens", "Acc Length", "Speed (token/s)"]
+    rows = [[f"{latency:.3f}", f"{tokens}", f"{acc_length:.3f}", f"{speed:.2f}"]]
+    msg = tabulate.tabulate(rows, headers=headers, tablefmt="pretty")
+    print(msg)
 
     return acc_length, speed