minor: update gsm8k threshold (#2125)

python/sglang/test/test_utils.py

@@ -439,18 +439,22 @@ def popen_launch_server(
         process = subprocess.Popen(command, stdout=None, stderr=None, env=env)
 
     start_time = time.time()
-    while time.time() - start_time < timeout:
-        try:
-            headers = {
-                "Content-Type": "application/json; charset=utf-8",
-                "Authorization": f"Bearer {api_key}",
-            }
-            response = requests.get(f"{base_url}/health_generate", headers=headers)
-            if response.status_code == 200:
-                return process
-        except requests.RequestException:
-            pass
-        time.sleep(10)
+    with requests.Session() as session:
+        while time.time() - start_time < timeout:
+            try:
+                headers = {
+                    "Content-Type": "application/json; charset=utf-8",
+                    "Authorization": f"Bearer {api_key}",
+                }
+                response = session.get(
+                    f"{base_url}/health_generate",
+                    headers=headers,
+                )
+                if response.status_code == 200:
+                    return process
+            except requests.RequestException:
+                pass
+            time.sleep(10)
     raise TimeoutError("Server failed to start within the timeout period.")