MySQL 8.0.17 调优指南（openEuler 20.09） 发布日期 2020-10-15 目 录 1 调优概述......................................................................................................................................1 ......................................................................... 9 MySQL 8.0.17 调优指南（openEuler 20.09） 目 录 2020-10-15 ii 1 调优概述 1.1 MySQL介绍 1.2 调优原则 1.3 调优思路 1.1 MySQL 介绍 MySQL是一个关系型数据库管理系统，由瑞典MySQL 由于在进行系统性能分析时，性能分析工具本身会占用一定的系统资源，如CPU 资源、内存资源等等。我们必须注意到这点，即分析工具本身运行可能会导致系 统某方面的资源瓶颈情况更加严重。 MySQL 8.0.17 调优指南（openEuler 20.09） 1 调优概述 2020-10-15 1 ● 必须保证调优后的程序运行正确。 ● 调优过程是迭代渐进的过程，每一次调优的结果都要反馈到后续的代码开发中 去。 ● 性能调优

.......................................................................................... 5 openEuler 面向多样性算计算的创新 ................................................................................... ............................................................................... 13 openEuler 20.03 LTS SP1 & SP2 软件仓库中引入 Greenplum 6.17.0 版本 ......................................................... 白皮书 4 白皮书 | 4 关于本白皮书 近日，Greenplum 社区和欧拉开源社区深化合作，在欧拉开源操作系统（openEuler, 简称“欧拉”）编译测试了高级分 析数据平台 Greenplum，用实践证明了 Greenplum 与支持多样性计算的欧拉开源操作系统完全兼容，是 Greenplum 与中国本地 IT

access: Quick start | Production deployment TiDB 7.5.0 is a Long-Term Support Release (LTS). Compared with the previous LTS 7.1.0, 7.5.0 includes new features, improvements, and bug fixes released in 7.2.0-DMR x to 7.5.0, you can download the TiDB Release Notes PDF to view all release notes between the two LTS versions. The following table lists some highlights from 7.2.0 to 7.5.0: Category Feature in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground

access: Quick start | Production deployment TiDB 7.1.0 is a Long-Term Support Release (LTS). Compared with the previous LTS 6.5.0, 7.1.0 not only includes new features, improve- ments, and bug fixes released in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground Any bugs will be fixed in future releases. For general purposes, it is recommended to use the latest LTS version. The abbreviations in the table below have the following meanings: • Y: the feature is generally

in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground Any bugs will be fixed in future releases. For general purposes, it is recommended to use the latest LTS version. The abbreviations in the table below have the following meanings: • Y: the feature is generally is GA in a DMR version, it is recommended to use the feature in production environments in a later LTS version. • N: the feature is not supported. • E: the feature is not GA yet (experimental) and you

Directory Access Protocol (LDAP) · · · · · · · · · · · · · · · · · · · · 6725 17.9.3 Long Term Support (LTS) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 6725 17.10 M · · · · in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground Any bugs will be fixed in future releases. For general purposes, it is recommended to use the latest LTS version. The abbreviations in the table below have the following meanings: • Y: the feature is generally

access: Quick start | Production deployment TiDB 8.1.0 is a Long-Term Support Release (LTS). Compared with the previous LTS 7.5.0, 8.1.0 includes new features, improvements, and bug fixes released in 7.6.0-DMR x to 8.1.0, you can download the TiDB Release Notes PDF to view all release notes between the two LTS versions. The following table lists some highlights from 7.6.0 to 8.1.0: Category Fe in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground

access: Quick start | Production deployment TiDB 8.1.0 is a Long-Term Support Release (LTS). Compared with the previous LTS 7.5.0, 8.1.0 includes new features, improvements, and bug fixes released in 7.6.0-DMR x to 8.1.0, you can download the TiDB Release Notes PDF to view all release notes between the two LTS versions. The following table lists some highlights from 7.6.0 to 8.1.0: Category Fe in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground

in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground Any bugs will be fixed in future releases. For general purposes, it is recommended to use the latest LTS version. The abbreviations in the table below have the following meanings: • Y: the feature is generally is GA in a DMR version, it is recommended to use the feature in production environments in a later LTS version. • N: the feature is not supported. • E: the feature is not GA yet (experimental) and you

in different TiDB versions, including Long- Term Support (LTS) versions and Development Milestone Release (DMR) versions after the latest LTS version. You can try out TiDB features on TiDB Playground Any bugs will be fixed in future releases. For general purposes, it is recommended to use the latest LTS version. The abbreviations in the table below have the following meanings: • Y: the feature is generally is GA in a DMR version, it is recommended to use the feature in production environments in a later LTS version. • N: the feature is not supported. • E: the feature is not GA yet (experimental) and you