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Clarification on “Call me Maybe: MariaDB Galera Cluster”

 | September 17, 2015 |  Posted In: InnoDB, MariaDB, MySQL, Percona XtraDB Cluster

Recently Aphyr (Kyle Kingsbury) published https://aphyr.com/posts/327-call-me-maybe-mariadb-galera-cluster The article is technically valid, I am not going to dispute a conclusion Aphyr made, but it is also quite technically involved, so users who just jump to conclusion may get the wrong impression and we’re left with more questions than ever. So, let me state what is the […]

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Checkpoint strikes back

 | August 3, 2015 |  Posted In: MongoDB, MySQL

In my recent benchmarks for MongoDB, we can see that the two engines WiredTiger and TokuMX struggle from periodical drops in throughput, which is clearly related to a checkpoint interval – and therefore I correspond it to a checkpoint activity. The funny thing is that I thought we solved checkpointing issues in InnoDB once and […]

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InnoDB vs TokuDB in LinkBench benchmark

 | July 24, 2015 |  Posted In: Benchmarks, MySQL, Percona Server, TokuDB

Previously I tested Tokutek’s Fractal Trees (TokuMX & TokuMXse) as MongoDB storage engines – today let’s look into the MySQL area. I am going to use modified LinkBench in a heavy IO-load. I compared InnoDB without compression, InnoDB with 8k compression, TokuDB with quicklz compression. Uncompressed datasize is 115GiB, and cachesize is 12GiB for InnoDB […]

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Using Cgroups to Limit MySQL and MongoDB memory usage

 | July 1, 2015 |  Posted In: InnoDB, MongoDB, MySQL

Quite often, especially for benchmarks, I am trying to limit available memory for a database server (usually for MySQL, but recently for MongoDB also). This is usually needed to test database performance in scenarios with different memory limits. I have physical servers with the usually high amount of memory (128GB or more), but I am […]

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MongoDB with Percona TokuMXse – experimental build RC5 is available!

 | May 8, 2015 |  Posted In: MongoDB, MySQL

While our engineering team is working on finalizing the TokuMXse storage engine, I want to provide an experimental build that you can try and test MongoDB 3.0 with our storage engine. It is available here percona.com/downloads/TESTING/Percona-TokuMXse-rc5/percona-tokumxse-3.0.3pre-rc5.tar.gz To start MongoDB with TokuMXse storage engine use:

I am looking for your feedback!

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Reference architecture for a write-intensive MySQL deployment

 | July 22, 2014 |  Posted In: Insight for DBAs, MySQL, Percona Cloud Tools, Percona Server, TokuDB

We designed Percona Cloud Tools (both hardware and software setup) to handle a very high-intensive MySQL write workload. For example, we already observe inserts of 1bln+ datapoints per day. So I wanted to share what kind of hardware we use to achieve this result. Let me describe what we use, and later I will explain […]

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TokuDB tips: MySQL backups

 | July 15, 2014 |  Posted In: MySQL, Percona Server, TokuDB

In my recent post, “TokuDB gotchas: slow INFORMATION_SCHEMA TABLES,” I saw a couple questions and tweets asking if we use TokuDB in production. Actually I mentioned it in that post and we also blogged about it in a couple of other recent posts: Getting to know TokuDB for MySQL Percona Server with TokuDB: Packing 15TB […]

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