Provider更新版本后，灰度引流8%，Consumer重启后时延上涨

1. 早上Provider更新版本，升级部分机器
2. 早上Consumer时延无变化
3. 下午Consumer批量重启（70+机器），所有接口时延都上涨（版本未变化，配置未变化）
4. 时延半天没有恢复
5. 重启Provider，时延恢复

The report describes latency rising after Consumer restarts and recovering after Provider restarts, but names no files, tests, or entry points. Start by reproducing or tracing the Provider and Consumer restart path; done requires identifying the cause and verifying that latency remains stable after the reported restart sequence.

Written by the indexing model from the issue text.