# Conclusions

+ Analysis conclusion:
  + The overall Duration 999 line is very high, basically around 4s.
  + The service continues to write very slowly, and the TiKV CPU is very high.
  + The CPU utilization of each TiKV is balanced, and write hot spots can be excluded.
  + The insert QPS is around 1.5k, and you can see that the slow query focuses on insert statements, and the average execution time is about 4 s.

+ Further confirm the direction:
  + Time-consuming between TiDB Server and TiKV

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- The overall Duration 999 line is very high, around 4s
- Insert QPS is around 1.5k
- Continuous service writes are super slow, TiKV CPU is very high, and the utilization of each TiKV CPU is balanced to exclude write hot spots.