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Displaying posts with tag: percona server (reset)
This Week in Data with Colin Charles #4: Percona Server for MySQL with MyRocks

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.

Percona Live Europe Dublin

Have you registered for Percona Live Europe Dublin? We’ve more or less finalized the schedule, and the conference grid looks 100% full. We’re four weeks away, so I suggest you register ASAP!

I should also mention that no event can be pulled off without sponsors, so thank you sponsors of Percona Live Europe 2017. I sincerely hope to see more sign up. Feel free to ask me more about it, or just check out our sponsor prospectus.

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Percona Server for MySQL 5.7.19-17 Is Now Available

Percona announces the release of Percona Server for MySQL 5.7.19-17 on August 31, 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 5.7.19, and including all the bug fixes in it, Percona Server for MySQL …

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Percona Server for MySQL 5.6.37-82.2 Is Now Available

Percona announces the release of Percona Server for MySQL 5.6.37-82.2 on August 25, 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 5.6.37, and including all the bug fixes in it, Percona Server for MySQL …

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Percona Server for MySQL 5.5.57-38.9 Is Now Available

Percona announces the release of Percona Server for MySQL 5.5.57-38.9 on August 23, 2017. Based on MySQL 5.5.57, including all of its bug fixes, Percona Server for MySQL 5.5.57-38.9 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 5.5.57-38.9 milestone on Launchpad. Downloads are available here and from the Percona Software Repositories.

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How far can you go with MySQL or MariaDB ?

MySQL theoretical limits are known and they can be found in the manual, they include:

MyISAM permits data and index files to grow up to 256 TiB by default, but this limit can be changed up to the maximum permissible size of 65,536 TiB (256^7 − 1 bytes). The maximum tablespace size depends on the InnoDB page size: 64 TiB for 16 KiB pages.(The maximum tablespace size is also the maximum size for a

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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