MySQL Health Checks

Our MySQL experts can help you achieve peace of mind when it comes to your MySQL databases

The MySQL Health Check is targeted at assessing the performance, stability and availability of your MySQL based systems. This analysis can be focused on performance, security, migration, upgrade, or availability issues or concerns. An independent or impartial review of your MySQL environment can sometimes help when teams may be set in their ways or need a little guidance. The goal is to help you save time, money and avoid headaches.

The results of a Health Check are documented recommendations relating to performance, stability, availability, or the specific focus you requested, of your MySQL databases. Our team will be available to go over the report and recommendations with you to address any questions or concerns you may have. The Xtivia MySQL team is then available to assist you with the implementation of any of the recommendations once you approve those efforts. We help clients achieve Increased performance, maximized availability, boosted productivity and peace of mind with their MySQL systems.

The MySQL Health Check is a carefully crafted program designed to review the efficiency and effectiveness of a MySQL-based computing environment. The efficiency of the system is evaluated by determining the extent to which the MySQL products have been utilized, answering the question, “Is the system firing on all cylinders?”

Determining the efficiency of a system includes the following:

• Are the database and operating system properly tuned?
• Are there sufficient hardware resources for the various applications?
• Have schemas been normalized or denormalized where appropriate?
• Have the proper indexes been created?
• Are critical administrative utilities run regularly?
• Does the staff possess the requisite skills to maintain an efficient system?

In a complex computing environment, these are just some of the issues that affect the overall efficiency and effectiveness of the systems in place. During a MySQL Health Check, a skilled MySQL DBA will assess your MySQL database environment. Depending upon the complexity of your system, a Health Check requires from one-to-five days to complete. The Health Check includes the database server, application servers, MySQL client PCs and round-trip network traffic to and from the database.

Ideal System Performance

To achieve the optimal performance for a given system, peak performance of each component must be ensured. The components addressed in this performance analysis include:

• Hardware utilization including CPU, I/O bottlenecks, and memory
• Operating System and Storage configuration
• MySQL database’s physical and logical design
• Client authentication and connection resolution
• Application implementation
• Operations and maintenance including backup, recovery, consistency checks, and system housekeeping

Each of these components is critically important to the optimal performance of the overall system. Here are some of the issues related to each system component.

Hardware Resources:

The server hosting your MySQL database relies primarily on three hardware subsystems for efficient performance – CPU, Memory, and I/O.

A well-architected system allows for ample distribution of workload across spindles, controllers and CPUs. If RAID is being used on site, this will be analyzed for its effect on the database and applications. I/O configuration is the most flexible of the resources. Database and System Administrators can work jointly to balance the I/O load across all available resources. The objective is to eliminate bottlenecks and sustain throughput for the life of the database server.

A large server may contain several gigabytes of main memory. The use of that memory has to be carefully divided among the functions of the server – applications, database, and operating system. The goal is to allocate sufficient free memory to meet the peak demands of the workload, optimally tune Unix kernel memory-specific parameters where applicable, and dedicate a tunable chunk to the MySQL database and its many memory structures.

Operating System:

When MySQL is deployed on a Microsoft Windows platform, it behaves differently than one deployed in a Unix environment. Both operating systems must be closely examined and tuned to optimally support a MySQL database deployment. In both situations, the memory options and other MySQL database parameters must be tuned within the context of the respective operating system.

MySQL Database Server:

There are numerous items that relate to database performance. However, key elements of this score will reflect the use of indexes, table fragmentation and I/O balance, optimizer statistics, parameter settings, transaction logging, database layout, session activity, cache utilizations, and others. These areas will be investigated extensively based on the overall behavior of the database. Each component of the analysis will be detailed in the report you’ll receive following the Health Check.

Client Communications:

There are several optimizations available for client PCs connecting to your MySQL-based database management system. These will be evaluated for appropriateness in the environment. Additionally, if clients are connecting to a MySQL database with older versions of the client software, there is tremendous opportunity for performance improvement through client library upgrades.

Application Implementation:

Database applications can often be enhanced using techniques introduced after the application was originally designed. A discussion with the application developers will aid the DBA in making recommendations for improving the application.

While the goal of the above analysis is to leverage hardware and software to its fullest potential, this area of the assessment strives to provide operational stability to the environment. Looking at batch jobs, backup and recovery strategies, logging strategies, upgrade strategies, and test platform capability will enable the DBA to provide recommendations for improving up time of the environment. During the Performance Analysis, clients will provide access to pertinent systems and key personnel to ensure a thorough and productive assessment. Key individuals within the environment are the DBA, the System Administrator, the Application Team Leader, and others identified as subject matter experts.