# Large Amount Of Keys Scan Case Study (B)

+ TikV-Details —> Coprocessor Detail —> Total Ops Details (Index Scan)
  + From around 21:00, the number of processed_keys for index scan has gradually increased, and it is basically consistent with the trend of increasing gRPC coprocessor duration

![left](./student-guide/diagram/27-SQL-scan-key-troubleshooting-02-01.png)

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- TikV-Details —> Coprocessor Detail —> Total Ops Details (Index Scan)
From this monitoring, it can be seen that the number of processed_keys for index scan gradually increases from around 21:00, and is basically consistent with the trend of increasing gRPC coprocessor duration, as follows: