Merge pull request #340 from echo77-nan/patch-8

Update 03_sysbench_test.md

Author: wugongbo

docs/user_manual/quick_starts/en-US/chapter_03_test_oceanbase_database/03_sysbench_test.md

@@ -5,13 +5,15 @@ weight: 4
 
 # 3.3 Run the Sysbench benchmark
 
-Sysbench is a LuaJIT-based multi-thread benchmark tool that allows you to write scripts to test the CPU, memory, thread, I/O, and database performance. It is often used to evaluate and test the database workload under various system parameter configurations. You can run the Sysbench benchmark to test a variety of database businesses by customizing Lua scripts without modifying the source code. 
-
 This topic describes two methods to run the Sysbench benchmark on OceanBase Database in a CentOS Linux 7.9 environment based on the x86 architecture.
 
 * Use OceanBase Deployer (OBD) to run the benchmark. 
 
-* Use the official Sysbench tool to manually run the Sysbench benchmark step by step. 
+* Use the official Sysbench tool to manually run the Sysbench benchmark step by step.
+
+## Sysbench Overview
+
+Sysbench is a LuaJIT-based multi-thread benchmark tool that allows you to write scripts to test the CPU, memory, thread, I/O, and database performance. It is often used to evaluate and test the database workload under various system parameter configurations. You can run the Sysbench benchmark to test a variety of database businesses by customizing Lua scripts without modifying the source code. 
 
 ## Use obdiag to inspect the cluster before running the benchmark