pingcap · ti-chi-bot · Mar 12, 2025 · Mar 12, 2025
diff --git a/TOC.md b/TOC.md
@@ -246,11 +246,13 @@
 - Performance Tuning
   - Tuning Guide
     - [Performance Tuning Overview](/performance-tuning-overview.md)
-    - [Performance Analysis and Tuning](/performance-tuning-methods.md)
-    - [Performance Tuning Practices for OLTP Scenarios](/performance-tuning-practices.md)
-    - [TiFlash Performance Analysis Methods](/tiflash-performance-tuning-methods.md)
-    - [TiCDC Performance Analysis Methods](/ticdc-performance-tuning-methods.md)
-    - [Latency Breakdown](/latency-breakdown.md)
+    - [A Practical Guide for SQL Tuning](/sql-tuning-best-practice.md)
+    - Tuning by Metrics
+      - [Performance Analysis and Tuning](/performance-tuning-methods.md)
+      - [Performance Tuning Practices for OLTP Scenarios](/performance-tuning-practices.md)
+      - [TiFlash Performance Analysis Methods](/tiflash-performance-tuning-methods.md)
+      - [TiCDC Performance Analysis Methods](/ticdc-performance-tuning-methods.md)
+      - [Latency Breakdown](/latency-breakdown.md)
     - [TiDB Best Practices on Public Cloud](/best-practices-on-public-cloud.md)
   - Configuration Tuning
     - [Tune Operating System Performance](/tune-operating-system.md)

diff --git a/media/sql-tuning/cost-based-optimization.png b/media/sql-tuning/cost-based-optimization.png
diff --git a/media/sql-tuning/execution-plan-traverse.png b/media/sql-tuning/execution-plan-traverse.png
diff --git a/media/sql-tuning/slow-query-default.png b/media/sql-tuning/slow-query-default.png
diff --git a/media/sql-tuning/slow-query-dimension.png b/media/sql-tuning/slow-query-dimension.png
diff --git a/media/sql-tuning/sql-statement-dimension.png b/media/sql-tuning/sql-statement-dimension.png
diff --git a/media/sql-tuning/sql-statements-default.png b/media/sql-tuning/sql-statements-default.png
diff --git a/media/sql-tuning/workflow-tiflash.png b/media/sql-tuning/workflow-tiflash.png
diff --git a/media/sql-tuning/workflow.png b/media/sql-tuning/workflow.png
diff --git a/sql-tuning-best-practice.md b/sql-tuning-best-practice.md