P95 低于 1,000 毫秒的目标
将第95百分位(P95)响应延迟目标设为约1000毫秒;超过数秒的延迟,用户通常开始失去参与感。应基于百分位数(而非平均值)设定服务水平目标(SLO);校准可参考IEEE关于语音界面中用户感知响应延迟的研究,再结合自身用户的实际反馈验证和确认具体阈值。
原始摘录
Target a P95 turn latency under about 1,000 ms, and treat anything beyond a couple of seconds as the point where callers start to disengage. Set percentile SLOs, not averages, and calibrate against user-study research like this IEEE study on perceived response delay in voice interfaces, then confirm the specific thresholds against your own caller feedback.