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Displaying posts with tag: mysql performance (reset)
Q & A on Webinar “MySQL Performance for DevOps”

First I want to thank everyone who attended my November 16, 2021 webinar “MySQL Performance for DevOps“. Recording and slides are available on the webinar page.

Here are answers to the questions from participants which I was not able to provide during the webinar.

Q: Hi! We have troubles with DELETE queries. We have to remove some data periodically (like, hourly, daily) and we have short-term server stalls during these DELETEs. Server is running on modern NVMe’s so we wonder why do we have this situation. Those DELETE’s are not so large, like 10 000 – 15 000 records, but tables on which DELETE’s are performed update frequently.

A: I would test if a similar

DELETE

  statement is slow when you run it on …

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MinervaDB Webinar – Building MySQL Database Infrastructure for Performance and Reliability

MinervaDB Webinar – Building MySQL Database Infrastructure for Performance and Reliability

Recently I did a webinar on ” Building MySQL Database Infrastructure for Performance and Reliability ” , It was big success and thought will share the slides of webinar in this blog. I get lot of emails daily from Database Architects, DBAs, Database Engineers, Technical Managers and Developers worldwide on best practices and checklist to build MySQL for performance, scalability, high availability and database SRE, The objective of this webinar is to share with them a cockpit view of MySQL infrastructure operations from MinervaDB perspective. Database Systems are growing faster than ever, The modern datanomy businesses like Facebook, Uber, Airbnb, LinkedIn etc. are powered by Database Systems, This makes Database Infrastructure operationally complex and we can’t technically scale such systems with eyeballs. Building MySQL …

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InnoDB Page Compression – MySQL 8 Compression

InnoDB Page Compression Explained 

We have several customers with multi-terabyte database infrastructure on SSDs, The SSDs are great investment for performance but they are also expensive with shorter lifespans so storage efficiency management is something we are very cautious about on SSDs, At MinervaDB Labs we spend considerable amount of time doing research on InnoDB page compressions benefits and most common mistakes. The compressed tables were first introduced in 2008  with InnoDB plugin for MySQL 5.1 . Facebook has been a major committer to this project and most of it were later implemented in upstream MySQL code as well. We can implement compression in InnoDB is two ways, Either by using Barracuda InnoDB file format or ROW_FORMAT=COMPRESSED

How InnoDB page compression works ?

When a page is …

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What are the MySQL Metrics That Really Make a Difference?

Author: Robert Agar

MySQL is one of the most popular relational database platforms in the world. As such, it is used as the backend of many mission-critical applications across all sectors of business and industry. If you are a DBA or database developer there is a high probability that you are working with MySQL now or will be in the near future.

One of the primary responsibilities of a DBA is to optimize the performance of their databases. There are many ways to accomplish this feat, and all of them have an important point in common. You need knowledge concerning the operation of your systems before you can expect to make intelligent modifications to them. All of the methods used to tune and optimize your databases are identified by studying metrics regarding their current performance and using this data to plan appropriate action.

The right tools are required to gather the information needed to …

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ProxySQL team is coming to Ghent with the Technology Day

ProxySQL Technology Day in Ghent, Belgium

As a part of the ProxySQL team I am happy to announce my trip to Ghent to ProxySQL Technology Day. With great pleasure, I will join the experts from Oracle, Percona, and Pythian to talk about various things that ProxySQL can do for a user. We are going to meet at 5PM at Ghent’s Co.Station co-working on Thursday, October 3rd to walk through key features that ProxySQL is adding to MySQL ecosystem. Join me and others for five talks and a round table about building MySQL infrastructure to serve hundreds of thousands of queries per second.

What am I going to talk about?

In my 30 minutes “Introduction to High …

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Problem Queries are Killing Your Database Performance

Author: Robert Agar

Tuning database performance is a complicated task that can be a thorn in the side of the database team. There are many interconnected components and environmental aspects that come under consideration when attempting to optimize the performance of your database systems. A DBA can be hard-pressed to determine where to begin their optimization efforts.

An initial investigation may concentrate on the network and hardware on which the database is running. These inquiries may uncover issues that can be easily identified and addressed. It may be a simple matter of adding some disk space or upgrading memory on the database’s server. You might be able to move the database to a less-used network segment to improve the response time when satisfying user requests. Maybe there are conflicting applications or processes on the same server that are impacting the availability of resources to power the …

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Tuning MyRocks for performance

There are basically two things which I majorly like about using MyRocks, 1. LSM Advantage – smaller space & lower write amplification and 2. Best of MySQL like replication, storage engine centric database infrastructure operations and MySQL orchestration tools. Facebook built RocksDB as an embeddable and persistent key-value store with lower amplification factor () compared to InnoDB. Let me explain a scenario were InnoDB proves less efficient compared to RocksDB in SSD:
We know InnoDB is constrained by a fixed compressed page size. Alignment during fragmentation and compression causes extra unused space because the leaf nodes are not full. Let’s consider a InnoDB table with a compressed page size of 8KB. A 16KB in-memory page compressed to 5KB still uses 8KB on storage. Adding to this, each entry in the primary key index has 13 bytes of metadata (6 byte transaction id + 7 byte rollback pointer), and …

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MySQL Replication Notes


The MySQL Replication was my first project as a Database Administrator (DBA) and I have been working with Replication technologies for last few years and I am indebted to contribute my little part for development of this technology. MySQL supports different replication topologies, having better understanding of basic concepts will help you in building and managing various and complex topologies.I am writing here, some of the key points to taken care when you are building MySQL replication. I consider this post as a starting point for building a high performance and consistent MySQL servers.  Let me start with below key points Hardware.MySQL Server VersionMySQL Server ConfigurationPrimary KeyStorage EngineI will update this post with relevant points, whenever I get time. I am trying to provide generic concepts and it will be applicable to all version of MySQL, however, some of the concepts are new and applicable to latest versions …

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Installation and configuration of Percona XtraDB Cluster on CentOS 7.3

This blog will show how to install the Percona XtraDB Cluster on three CentOS 7.3 servers, using the packages from Percona repositories. This is a step-by-step installation and configuration blog, We recommend Percona XtraDB Cluster for maximum availability / reliability and scale-out READ/WRITE optimally. We are an private-label independent and vendor neutral consulting, support, managed services and education solutions provider for MySQL, MariaDB, Percona Server and ClickHouse with core expertise in performance, scalability, high availability and database reliability engineering. All our blog posts are purely focussed on education and research across open source database systems infrastructure operations. To engage us for building and managing web-scale database infrastructure operations, Please contact us on contact@minervadb.com

This cluster will be assembled of three servers/nodes:

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Installation and configuration of Percona XtraDB Cluster on CentOS 7.3

This blog will show how to install the Percona XtraDB Cluster on three CentOS 7.3 servers, using the packages from Percona repositories. This is a step-by-step installation and configuration blog, We recommend Percona XtraDB Cluster for maximum availability / reliability and scale-out READ/WRITE optimally. We are an private-label independent and vendor neutral consulting, support, managed services and education solutions provider for MySQL, MariaDB, Percona Server and ClickHouse with core expertise in performance, scalability, high availability and database reliability engineering. All our blog posts are purely focussed on education and research across open source database systems infrastructure operations. To engage us for building and managing web-scale database infrastructure operations, Please contact us on contact@minervadb.com  

This cluster will be assembled of three …

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