> For the complete documentation index, see [llms.txt](https://docs.console.zenlayer.com/welcome/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.console.zenlayer.com/welcome/cn/glossary/h-n/j.md).

# J

## 抖动

在网络中，抖动指的是数据包到达目的地时延迟的变化。它是衡量数据包到达时间一致性的指标。抖动可能由于网络拥塞、路由变化以及其他影响网络上传输数据包的因素而发生。对于需要一致延迟以保证流畅和无缝用户体验的实时应用（如语音和视频会议），抖动尤其成问题。高水平的抖动会导致音频或视频断断续续、帧丢失，以及其他可能负面影响通信质量的问题。抖动通常以毫秒（ms）为单位进行测量，为了确保高质量的用户体验，尽可能减少抖动是非常重要的。网络工程师使用各种技术来管理和减少抖动，例如实施服务质量（QoS）策略、优化网络路由以及采用缓冲和排队机制。


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