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Displaying posts with tag: percona server (reset)
Fun with Bugs #53 - On Some Percona Software Bugs I've Reported

So far in this series I had written only/mostly about MySQL server bugs. Does it mean that there are no unique or interesting bugs in other MySQL-related software or MySQL forks and projects that use MySQL code?

Surely no, it doesn't. So, today I'd like to present a short list of currently active (that is, new or probably not yet resolved) bugs that I had reported for Percona's software at Launchpad over the years I use it. The list is based on this link, but I excluded minor reports and those that probably are just forgotten, while the problem is fixed long time ago.

Let me start with bugs in XtraBackup, the tool that plays a key role in most MySQL environments that are not using Oracle's Enterprise …

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Setting Up Percona PAM with Active Directory for External Authentication

In this blog post, we’ll look at how to set up Percona PAM with Active Directory for external authentication.

In my previous article on Percona PAM, I demonstrated how to use Samba as a domain, and how easy it is to create domain users and groups via the samba-tool. Then we configured nss-pam-ldapd and nscd to enumerate user and group information via LDAP calls, and authenticate users from this source.

This time around, I will demonstrate two other ways of using Active Directory for external authentication by joining the domain via SSSD or Winbind. System Security Services Daemon (SSSD) allows you to configure …

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Thread_Statistics and High Memory Usage

In this blog post, we’ll look at how using thread_statistics can cause high memory usage.

I was recently working on a high memory usage issue for one of our clients, and made some interesting discoveries: high memory usage with no bounds. It was really tricky to diagnose.

Below, I am going to show you how to identify that having thread_statistics enabled causes high memory usage on busy systems with many threads.

Part 1: Issue Background

I had a server with 55.0G of available memory. Percona Server for MySQL version:

Version | 5.6.35-80.0-log Percona Server (GPL), Release 80.0, Revision f113994f31
                 Built On | debian-linux-gnu x86_64

We have …

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Percona Server for MySQL 5.7.18-15 is Now Available

Percona announces the GA release of Percona Server for MySQL 5.7.18-15 on May 26, 2017. Download the latest version from the Percona web site or the Percona Software Repositories. You can also run Docker containers from the images in the Docker Hub repository.

Based on MySQL 5.7.18, including all the bug fixes in it, Percona Server for MySQL 5.7.18-15 is the current GA release in the Percona Server for MySQL 5.7 series. Percona’s …

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Performance regression between Percona Server 5.6 & 5.7

I) An upgrade which hasn’t gone as planned

One of our customer needed help after trying to upgrade their slave from Percona Server 5.6 to Percona Server 5.7. (here 5.7.17 is used)
Indeed, from time to time, the replication lag was linearly growing, which could be quite annoying…

(good guess, 5.7 is the red dashed line!)

Their use case is quite interesting :

  • a lot of Queries Per Second (read & write, nearly 10k queries/s on this slave)
  • a lot of tables (about 600k spread across different databases)
  • a lot of writes
  • 24 CPUs, and 386G of RAM
  • A big buffer pool (270G)
  • not that fast SSD disks.

Because we have a high QPS but also a lot of writes, we need to fine tune the innodb settings.

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Percona Server for MySQL 5.7.18-14 is Now Available

Percona announces the GA release of Percona Server for MySQL 5.7.18-14 on May 12, 2017. Download the latest version from the Percona web site or the Percona Software Repositories. You can also run Docker containers from the images in the Docker Hub repository.

Based on MySQL 5.7.18, including all the bug fixes in it, Percona Server for MySQL 5.7.18-14 is the current GA release in the Percona Server for MySQL 5.7 series. Percona’s …

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Percona Server for MySQL 5.6.36-82.0 is Now Available

Percona announces the release of Percona Server for MySQL 5.6.36-82.0 on May 12, 2017. Download the latest version from the Percona web site or the Percona Software Repositories. You can also run Docker containers from the images in the Docker Hub repository.

Based on MySQL 5.6.36, and including all the bug fixes in it, …

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Percona Server for MySQL 5.5.55-38.8 is Now Available

Percona announces the release of Percona Server for MySQL 5.5.55-38.8 on May 10, 2017. Based on MySQL 5.5.55, including all the bug fixes in it, Percona Server for MySQL 5.5.55-38.8 is now the current stable release in the 5.5 series.

Percona Server for MySQL is open-source and free. You can find release details in the 5.5.55-38.8 milestone on Launchpad. Downloads are available here and from the Percona Software Repositories.

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Percona Live 2017: Day Three Keynotes

Welcome to the third (and final) day of the Percona Live Open Source Database Conference 2017, and the third (and final) set of Percona Live keynotes! The enthusiasm hasn’t waned here at Percona Live, and we had a full house on Thursday morning!

Day three of the conference kicked off with three keynotes talks, and ended with the Community Awards Ceremony:

Spinaltap: Airbnb’s Change Data Capture System

Xinyao Hu (AirBnB)

In this talk, Xinyao introduced Airbnb’s change data change system, Spinaltap. He briefly covered its design, and focused on various use cases inside Airbnb. These use cases covered both online …

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Experimental Build of MyRocks with Percona Server for MySQL

We have been working on bringing out a build of MyRocks with Percona Server for MySQL.

MyRocks is a RocksDB-based storage engine. You can find more information about MyRocks here.

While there is still a lot of work to do, I want to share an experimental build of Percona Server for MySQL with MyRocks, which you can use to evaluate and test this engine

(WARNING: in NO WAY is this build supposed to be for production usage! Consider this ALPHA quality.)

The tar.gz binaries are available from our …

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