add description of stale read metrics (#13842) (#13869)

* add description of stale read metrics Signed-off-by: you06 <[email protected]> * Apply suggestions from code review * Apply suggestions from code review Co-authored-by: Grace Cai <[email protected]> --------- Signed-off-by: you06 <[email protected]> Co-authored-by: you06 <[email protected]> Co-authored-by: Aolin <[email protected]> Co-authored-by: Grace Cai <[email protected]>
pingcap · Jun 14, 2023 · e21b2f3 · e21b2f3
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diff --git a/grafana-tidb-dashboard.md b/grafana-tidb-dashboard.md
@@ -113,6 +113,8 @@ To understand the key metrics displayed on the TiDB dashboard, check the followi
 - KV Request OPS: the execution times of a KV request, displayed according to TiKV
 - KV Request Duration 99 by store: the execution time of a KV request, displayed according to TiKV
 - KV Request Duration 99 by type: the execution time of a KV request, displayed according to the request type
+- Stale Read OPS: the number of Stale Read requests executed per second, which is divided into `hit` and `miss` categories
+- Stale Read Traffic: the traffic produced by Stale Read, which is divided into `hit` and `miss` categories
 
 ### PD Client