If you are a regular reader of this blog, you likely know I like the ZFS filesystem a lot. ZFS has many very interesting features, but I am a bit tired of hearing negative statements on ZFS performance. It feels a bit like people are telling me “Why do you use InnoDB? I have read […]
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The ability to restore MySQL logical backups is a significant part of disaster recovery procedures. It’s a last line of defense. Even if you lost all data from a production server, physical backups (data files snapshot created with an offline copy or with Percona XtraBackup) could show the same internal database structure corruption as in […]
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In this blog post, I will talk about archiving MySQL tables in ClickHouse for storage and analytics. Why Archive? Hard drives are cheap nowadays, but storing lots of data in MySQL is not practical and can cause all sorts of performance bottlenecks. To name just a few issues: The larger the table and index, the slower […]
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While preparing a post on the design of ZFS based servers for use with MySQL, I stumbled on the topic of fsync call performance. The fsync call is very expensive, but it is essential to databases as it allows for durability (the “D” of the ACID acronym). Let’s first review the type of disk IO operations […]
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Join Percona’s Chief Evangelist, Colin Charles as he presents Capacity Planning for Your Data Stores on Friday, December 15, 2017, at 7:00 am PST / 10:00 am EST (UTC-8). In this webinar, Colin uses a ticket sales website that does “normal” events like an M2M concert, but also occasionally also sells tickets to the Harry […]
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This post is a hands-on look at ZFS with MySQL. In my previous post, I highlighted the similarities between MySQL and ZFS. Before going any further, I’d like you to be able to play and experiment with ZFS. This post shows you how to configure ZFS with MySQL in a minimalistic way on either Ubuntu […]
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Since the purpose of a database system is to store data, there is close relationship with the filesystem. As MySQL consultants, we always look at the filesystems for performance tuning opportunities. The most common choices in term of filesystems are XFS and EXT4, on Linux it is exceptional to encounter another filesystem. Both XFS and […]
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Join Percona’s Senior Technical Services Engineer Adamo Tonete as he presents How To Scale with MongoDB on Wednesday, October 18, 2017, at 11:00 am PDT / 2:00 pm EDT (UTC-7). Register Now In this webinar, we will talk about how to scale with MongoDB, up to thousands of writes and reads per second. What are […]
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In this blog post, I will look at disk utilization and saturation. In my previous blog post, I wrote about CPU utilization and saturation, the practical difference between them and how different CPU utilization and saturation impact response times. Now we will look at another critical component of database performance: the storage subsystem. In this post, I […]
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In this blog, we’ll look at how to achieve better-than-linear scaling. Scalability is the capability of a system, network or process to handle a growing amount of work, or its potential to be enlarged to accommodate that growth. For example, we consider a system scalable if it is capable of increasing its total output under […]
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