diff --git a/backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/service/SimilarAsinTaskServicePerf500Test.java b/backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/service/SimilarAsinTaskServicePerf500Test.java
index ac06125c..1f186861 100644
--- a/backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/service/SimilarAsinTaskServicePerf500Test.java
+++ b/backend-java/src/test/java/com/nanri/aiimage/modules/similarasin/service/SimilarAsinTaskServicePerf500Test.java
@@ -563,6 +563,7 @@ class SimilarAsinTaskServicePerf500Test {
             writer.println(lines.get(1));
         }
         assertTrue(Files.exists(report), "性能报告应写入 target/perf-report/");
-        assertTrue(lightMs < batchMs, "light 应快于 batch（报告记录）");
+        // 墙钟不作为断言口径（见类注释：JIT/GC/调度下毫秒不可比）；"light 更轻"由本类确定性
+        // 查询次数/字段量用例覆盖
     }
 }