How to use MTR for performance regression testing of MySQL database?

How to use MTR for performance regression testing of MySQL database?

Introduction:
MySQL is a widely used relational database management system. In order to ensure its normal operation and performance stability, developers often need to conduct performance regression testing. MTR (MySQL Test Runner) is a powerful testing tool that can be used for automated testing and performance regression testing. This article will introduce how to use MTR for performance regression testing of MySQL database, and provide code samples as a reference.

1. Introduction to MTR
MTR is a tool that comes with the MySQL source code. Its purpose is for automated testing and performance regression testing. It can simulate multiple clients accessing the MySQL server at the same time, collect performance indicators during the test, and finally generate a test report. MTR has strong flexibility and scalability, and can meet various testing needs by writing customized test scripts.

2. Performance Regression Testing Process
Performance regression testing is a method of comparing system performance under different versions or configurations. During the regression testing process, we will run the same test cases in different environments and compare the test results to discover performance changes or problems. The following is the basic process of using MTR for performance regression testing:

1. Prepare the test environment:
   First, we need to prepare the MySQL server and test cases. You can choose to install the MySQL database and create the corresponding database and tables according to the testing requirements. At the same time, write test cases, including query, insert, update and other operations for different scenarios.
2. Configuring MTR:
   The configuration file of MTR is located in the mysql-test directory. You can specify the path of the test case, the parameters for connecting to the MySQL server and other configuration options by modifying the configuration file.

3. Run the performance regression test:
   Execute the following command in the command line to run the performance regression test:

   ./mtr --force --retry=3 --max-test-fail=0 --suite=perf regression

   The meaning of the parameters in the above command is as follows:

   • --force: Indicates that the test is forced to run, even if a previous test failed.
   • --retry=3: Indicates that the test will be retried up to 3 times when it fails.
   • --max-test-fail=0: Indicates that if a test fails, stop test execution.
   • --suite=perf: Specify the test suite. The perf suite is used here, which contains a series of performance test cases.
   • Regression: Specify the type of test case that needs to be run.
4. Analyze test results:
   MTR will generate a test report after the test, including the execution results, performance indicators and error logs of each test case. Based on the changes in performance indicators and the output of the error log, we can draw conclusions to determine whether performance has improved or degraded.

3. Code Example
The following is a code example that uses MTR for MySQL performance regression testing. Suppose we need to test insertion performance:

1. Create test case file test_insert.test:

   #创建测试表
   CREATE TABLE test_table(id INT PRIMARY KEY AUTO_INCREMENT, data VARCHAR(100));
   
   #插入性能测试
   #插入1000条数据
   INSERT INTO test_table(data) VALUES ("test data");
   ...
   INSERT INTO test_table(data) VALUES ("test data");
   
   SELECT COUNT(*) FROM test_table;

2. Edit MTR configuration file my.cnf:

   [mysqld]
   mtr_query_timeout=1800

3. Run the performance regression test:
   Execute the following command in the command line:

   ./mtr --force --retry=3 --max-test-fail=0 --suite=perf regression test_insert

   The execution results will include the execution time of each test case and the inserted record Number, you can compare the performance differences of different versions or configurations based on execution time.

Conclusion:
Using MTR for performance regression testing of MySQL database is an effective testing method. By automating testing and comparing the test results of different versions or configurations, you can evaluate the performance changes and stability of MySQL. I hope the introduction and code examples of this article can help readers better use MTR for performance regression testing.

The above is the detailed content of How to use MTR for performance regression testing of MySQL database?. For more information, please follow other related articles on the PHP Chinese website!