# Hotspot Troubleshooting Case Study (F)

+ Analysis conclusion:
  + You can see more obvious read hot spots in the Read Traffic section of the TiDB Dashboard Traffic Visualization Page
  + PD monitoring metrics show that each TiKV alternates with read hotspots consistent with Coprocessor Detail —> 95% Handle Duration by Store
  + The cluster has read hot spots during the increase in gRPC message duration

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- The reading hot phenomenon can be seen in the read traffic section of the TiDB Dashboard traffic visualization page
- The metrics for PD monitoring show alternating read hotspots for each TiKV, and the trend in this graph is largely consistent with the Coprocessor Detail —> 95% Handle Duration by Store monitoring
- In summary, it can be confirmed that the cluster has read hot spots during the increase in gRPC messge duration