Replace time.time() to time.perf_counter() for benchmarking. (#6178)

Signed-off-by: Lifu Huang <lifu.hlf@gmail.com>

benchmark/generative_agents/bench_other.py

@@ -39,7 +39,7 @@ def main(args):
         answer = await call_generate(**arg, temperature=0)
         states.append(answer)
 
-    tic = time.time()
+    tic = time.perf_counter()
     # we always sequentially execute agent calls to maintain its dependency
     if args.backend != "lmql":
         for arg in tqdm(arguments):
@@ -50,7 +50,7 @@ def main(args):
         loop = asyncio.get_event_loop()
         for arg in tqdm(arguments):
             loop.run_until_complete(get_one_answer_async(arg))
-    latency = time.time() - tic
+    latency = time.perf_counter() - tic
 
     print(f"Latency: {latency:.3f}")