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# 新疆移动 哪吒Session Records图表数据显示异常
| ID | Creation Date | Assignee | Status |
|----|----------------|----------|--------|
| OMPUB-786 | 2023-01-31T17:14:36.000+0800 | 方顺健 | 已解决 |
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环境XJ-移动 哪吒
版本: 22.02版本
问题描述查看Data Flow页面Session Records图表发现选取不同时间范围同一时间点的数值就会不同如下图所示以2023.01.24 23:30时间点为例选取最近7天最近30天和输入时间范围的数值均不相同且差异较大**fangshunjian** commented on *2023-01-31T18:13:05.546+0800*:
NZ根据查询的不同时间范围自动计算 step ,规则如下:
* 0 < interval < 24h, step = 15s
* 24h <= interval < 7days, step = 5min
* 7days <= interval < 30days ,step = 10min
* 30days <= interval , step = 30min
prometheus sum函数计算步骤
* 根据step 抽样计算点
* 相同时间计算点数据求和
结论:
* 不同时间范围 或 相同时间范围起始时间不一样 sum统计结果不一致属正常现象
* 可以考虑使用 sum_over_time() 函数统计一段时间内求和
 
[https://segmentfault.com/a/1190000017553625]
https://prometheus.io/docs/prometheus/latest/querying/operators/
https://zhuanlan.zhihu.com/p/295463393
[https://www.youtube.com/watch?v=67Ulrq6DxwA&t=1826s]
 
 
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# Attachments
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Attachment: 24日当天.png
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![24日当天.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/34638/24日当天.png)
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Attachment: 输入选择最近7天.png
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![输入选择最近7天.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/34636/输入选择最近7天.png)
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Attachment: 最近30天.png
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![最近30天.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/34635/最近30天.png)
Attachment: 最近7天.png
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![最近7天.png](https://gfwleak.exec.li/admin/geedge-jira/raw/branch/master/attachment/34637/最近7天.png)
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