v2.8.1 修复测试日志重复：并发数表头只在切换并发档时打印一次；日志条数计数修正；轮询加防重叠锁

tester.py

@@ -86,6 +86,7 @@ class TestRunner(threading.Thread):
         self.log("INFO", "校准完成: %.3f tok/字符（%.2f 字符/token）" % (ratio, 1.0 / ratio))
 
         run_seq = 0
+        last_conc = None  # 只在实际切换并发档时打印一次表头，避免同一并发数重复刷屏
         for L in lengths:
             if self.should_stop():
                 raise StopRequested()
@@ -94,7 +95,9 @@ class TestRunner(threading.Thread):
             for C in concurrency_levels:
                 if self.should_stop():
                     raise StopRequested()
-                self.log("INFO", "══ 并发数 %d（同时 %d 个流）══" % (C, C))
+                if C != last_conc:
+                    self.log("INFO", "══ 并发数 %d（同时 %d 个流）══" % (C, C))
+                    last_conc = C
                 if warmup:
                     self._warmup(base_prompt, C)
                 for i in range(1, n + 1):