Percona announces the release of Percona Server 5.6.32-78.0 on August 22nd, 2016. Download the latest version from the Percona web site or the Percona Software Repositories.

Based on MySQL 5.6.32, including all the bug fixes in it, Percona Server 5.6.32-78.0 is the current GA release in the Percona Server 5.6 series. Percona Server is open-source and free – this is the …

In this blog post, we’ll discuss how we’ve improved TokuDB and PerconaFT fragmented data file performance.

Through our internal benchmarking and some user reports, we have found that with long term heavy write use TokuDB/PerconaFT performance can degrade significantly on large data files. Using smaller node sizes makes the problem worse (which is one of our performance tuning recommendations when you have faster storage). The problem manifests as low CPU utilization, a drop in overall TPS and high client response times during prolonged checkpointing.

This post explains a little about how PerconaFT structures dictionary files and where the current implementation breaks down. Hopefully, it explains the nature of the issue, and how our solution helps addresses it. It also provides some contrived benchmarks that prove the solution.

PerconaFT map file disk format

NOTE. …

In this blog, I will provide answers to the Q & A for the “Introduction into storage engine troubleshooting” webinar.

First, I want to thank everybody for attending the July 14 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t able to answer during the webinar, with responses:

Q: At which isolation level do 

pt-online-schema-change

 and 

pt-archive

  copy data from a table?

A: Both tools do not change the server’s default transaction isolation level. Use either

REPEATABLE READ

 or set …

Percona announces the release of Percona Server 5.6.31-77.0 on July 7th, 2016. Download the latest version from the Percona web site or the Percona Software Repositories.

Based on MySQL 5.6.31, including all the bug fixes in it, Percona Server 5.6.31-77.0 is the current GA release in the Percona Server 5.6 series. Percona Server is open-source and free …

Percona announces the GA release of Percona Server 5.7.13-6 on July 6, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.7.13, including all the bug fixes in it, Percona Server 5.7.13-6 is the current GA release in the Percona Server 5.7 series. Percona’s provides completely open-source and free software. All the details of the release can be found in the …

Percona is glad to announce the GA release of Percona Server 5.7.12-5 on June 6, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.7.12, including all the bug fixes in it, Percona Server 5.7.12-5 is the current GA release in the Percona Server 5.7 series. All of Percona’s software is open-source and free, all the details of the release can be found in the …

Percona is glad to announce the release of Percona Server 5.6.30-76.3 on May 25, 2016. Download the latest version from the Percona web site or the Percona Software Repositories.

Based on MySQL 5.6.30, including all the bug fixes in it, Percona Server 5.6.30-76.3 is the current GA release in the Percona Server 5.6 series. Percona Server is open-source and free …

The problem with Twitter is that we talk about something and before you know it, people forget. (e.g. does WebScaleSQL have an async client library?) How many blog posts are there about Percona Live Santa Clara 2015? This time (2016), I’m going to endeavour to write more than to just tweet – I want to remember this stuff, and search archives (and also note the changes that happen in this ecosystem). And maybe you do too as well. So look forward to more blogs from Percona Live Data Performance Conference 2016. In the meantime, here’s tweets in chronological order from my Twitter search.

• crowd filling up the keynote room for #perconalive
• beginning shortly, we’ll see @peterzaitsev at #perconalive doing his keynote
• #perconalive has over 1,200 attendees – oracle has 20 folk, with 22 folk from facebook
…

This blog discusses how TokuDB impacts InnoDB performance when the two run in the same environment.

You would think MySQL storage engines are fairly independent of each other, even in the same environment. Enabling one, or changing its configuration, logically should have no impact on the performance of other engines (such as InnoDB) when they are accessing tables. The reality, however, is more complicated than that!    

Now that we’ve shipped TokuDB, we’ve been getting feedback from our community and customers that enabling TokuDB might negatively affect performance – even for queries that don’t touch TokuDB tables (and in some cases, even when TokuDB is kept completely idle).

Percona is glad to announce the GA release of Percona Server 5.7.11-4 on March 15, 2016. Download the latest version from the Percona web site or from the Percona Software Repositories.

Based on MySQL 5.7.11, including all the bug fixes in it, Percona Server 5.7.11-4 is the current GA release in the Percona Server 5.7 series. All of Percona’s software is open-source and free, …