# Pd Related (Continue...)

+ `Grafana` Monitor Grafana PD —> Statistics —> Hot read Region's leader distribution


![left](./student-guide/diagram/09-PD-05-01.png)
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- Outbound stores: Pay attention to whether there is an abnormal state of stores, such as Disconnect, Offline, Down, etc. Under normal circumstances, except Tombstone indicates a Store that has been offline and Offline indicates a Store that is being offline, Store should be 0.
- Region Health: Pay attention to the status of the region. A small amount of extra_peer/learner_peer/pending_peer will appear during normal scheduling. If there is a large number of occurrences, you need to analyze the reasons for TiKV, and a large number of empty regions will appear after the large table is cleaned If you interfere with the normal scheduling of PD, you need to merge these empty regions in a timely manner. You can refer to the slow Merge region speed for processing to speed up the merge speed.
- Statistics -Balance shows statistics related to scheduling equalization, focusing on whether there is an obvious imbalance:
  - Store Leader/Region Score: The score of each store
  - Store Leader/Region Count: Number of Leader/Regions per Store
  - Store available: The remaining space of each store
- Statistics - Hotspot shows the relevant statistics of the hotspot region, focusing on whether the distribution of hot spots is balanced:
  - Hot Write Region's Leader/Peer Distribution: Leader/Peer distribution in the Write Hotspot Region
  - Hot read Region's leader distribution: Leader distribution of reading hot regions