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Previous 30 Newer Entries Showing entries 31 to 60 of 90 Next 30 Older Entries

Displaying posts with tag: percona server (reset)

Experimental GIT Mirrors of Percona XtraBackup, Percona Server plus Oracle MySQL trees
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I recently blogged on setting up Experimental Git mirror of Oracle MySQL trees up on GitHub. I’m now happy to announce that there are also mirrors for:

I’ve also updated the Oracle MySQL GIT mirror to include MySQL 5.7 and the (now abandoned) MySQL 6.0. I include the abandoned 6.0 tree as it can provide useful archaeology as to where some code came from.

I’d love to hear about any positive/negative experiences using these

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Switching between versions using yum
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One type of question we get very often (even in the form of filed bugs!) is how to switch from stock MySQL to Percona Server or switch from Percona Server 5.5 to Percona XtraDB Cluster using yum, but à la apt-get, i.e. having yum handle the replace.

In its simplest form, yum cannot replace a package¹ for another like apt-get does:

 

# yum -q -q install Percona-XtraDB-Cluster-server
Error: Percona-XtraDB-Cluster-server conflicts with Percona-Server-server-55
Error: Percona-XtraDB-Cluster-client conflicts with Percona-Server-client-55
Error: Percona-XtraDB-Cluster-shared


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Percona Server 5.6-RC3 with TokuDB 7.0.4 – experimental build
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While we are working hard on the final push of Percona Server 5.6 GA (I know that many people are waiting on this, but stay with us – we want to ensure that we have a quality release with great performance), I decided to make an experimental build of Percona Server 5.6 with the TokuDB engine.

It’s available here: http://www.percona.com/downloads/TESTING/Percona-TokuDB/.

If you are interested, please test it and provide us with feedback. If things look good, in couple months we may release an official Percona Server 5.6 with TokuDB.

The post

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Considering TokuDB as an engine for timeseries data
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I am working on a customer’s system where the requirement is to store a lot of timeseries data from different sensors.

For performance reasons we are going to use SSD, and therefore there is a list of requirements for the architecture:

  • Provide high insertion rate
  • Provide a good compression rate to store more data on expensive SSDs
  • Engine should be SSD friendly (less writes per timeperiod to help with SSD wear)
  • Provide a reasonable response time (within ~50 ms) on SELECT queries on hot recently inserted data

Looking on these requirements I actually think that TokuDB might be a good fit for this task.

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Percona Server 5.1.71-14.9 is now available!
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Percona Server version 5.1.71-14.9

Percona is glad to announce the release of Percona Server 5.1.71-14.9 on August 27th, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.71, including all the bug fixes in it, Percona Server 5.1.71-14.9 is now the current stable release in the

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Percona Server 5.5.33-31.1 is now available
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Percona Server version 5.5.33-31.1

Percona is glad to announce the release of Percona Server 5.5.33-31.1 on August 27th, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.33, including all the bug fixes in it, Percona Server 5.5.33-31.1 is now the current stable release in the

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Why is the ibdata1 file continuously growing in MySQL?
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We receive this question about the ibdata1 file in MySQL very often in Percona Support.

The panic starts when the monitoring server sends an alert about the storage of the MySQL server – saying that the disk is about to get filled.

After some research you realize that most of the disk space is used by the InnoDB’s shared tablespace ibdata1. You have innodb_file_per_table enabled, so the question is:

What is stored in  [Read more...]

Want to archive tables? Use Percona Toolkit’s pt-archiver
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Percona Toolkit’s pt-archiver is one of the best utilities to archive the records from large tables to another tables or files. One interesting thing is that pt-archiver is a read-write tool. It deletes data from the source by default, so after archiving you don’t need to delete it separately.

As it is done by default, you should take care before actually running it on then production server. You can test your archiving jobs with the – dry-run  OR you can use the

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Percona Server 5.6 Webinar follow-up and Q&A
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Good news everyone! I recently presented a webinar: Percona Server 5.6: Enterprise Grade MySQL. It was also recorded so you can watch along or view the slide deck. As with all my talks, I am not simply reading the slides so it really is worth to listen to the audio rather than just glance through the slide deck.

There were a number of great questions asked which I’ll answer below:

Q: How does Stewart feel about this version of 5.6 taking into consideration “Stewart’s .20 rule?” (ref 2013 Percona Live Conference).

A: For those who aren’t familiar with it, I have a rule which I call “Stewart’s dot twenty rule” which I’ve posted a few times about on

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Let’s talk about Percona Server 5.6: Enterprise Grade MySQL (webinar)
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The new Percona Server 5.6 is the most manageable, highest performance, and most scalable version of MySQL available. Percona Server 5.6 is the best open source MySQL choice for enterprise-grade applications because it combines new features with the best features of Percona Server 5.5 and MySQL 5.6 to provide unparalleled performance.

Join me tomorrow as I explain how Percona Server 5.6 takes MySQL performance to new heights. In this webinar, aptly titled “

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Growth of Percona software releases
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It was once said that “real artists ship.” In looking over the history of Percona software releases, we are currently shipping more software than ever before.

First, let’s look at Percona Server. Let’s look at all major versions: 5.1, 5.5 and 5.6 as well as the total for each year. The estimate for 2013 comes from assuming the second half of 2013 is similar to the first half.

Percona Server releases per year

In 2011, when Percona Server 5.5 came along, we see a sharp reduction in Percona Server 5.1 releases (remember that there’s at least one Percona Server 5.1 release for each Oracle MySQL 5.1 release, and this reduction is likely a reflection of the reduction of

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Crash-resistant replication: How to avoid MySQL replication errors
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Percona Server’s “crash-resistant replication” feature is useful in versions 5.1 through 5.5. However, in Percona Server 5.6 it’s replaced with Oracle MySQL 5.6′s “crash safe replication” feature, which has it’s own implementation (you can read more about it here).

A MySQL slave normally stores its position in files master.info and relay-log.info which are updated by slave IO_THREAD & slave SQL_THREAD respectively. The file master.info contains connection info & replication coordinates showing how many

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Percona Server 5.1.70-14.8 now available
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Percona Server version 5.1.70-14.8

Percona is glad to announce the release of Percona Server 5.1.70-14.8 on July 3nd, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.70, including all the bug fixes in it, Percona Server 5.1.70-14.8 is now the current stable release in the 5.1

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Percona Server 5.5.32-31.0 now available
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Percona Server version 5.5.32-31.0

Percona is glad to announce the release of Percona Server 5.5.32-31.0 on July 2nd, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.32, including all the bug fixes in it, Percona Server 5.5.32-31.0 is now the current stable release in the 5.5

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Percona Server 5.6.12-60.4 second Release Candidate now available
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Percona Server for MySQL version 5.6.12-60.4

Percona is glad to announce the second Release Candidate release of Percona Server 5.6.12-60.4 on June 27th, 2013 (Downloads are available here and from the Percona Software Repositories).

Based on the recently released MySQL 5.6.12, including all

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Some new (and useful!!) MySQL 5.6 variables
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Upgrading from MySQL 5.5 to MySQL 5.6 is a fairly straightforward process. However, the move to version 5.6 does bring with it some new varaibles with which to work.

One of the recent innovations (pioneered by Percona in Percona Server 5.5 if I recall correctly) is the ability to "dump" the innodb buffer pool***. This can be done any time MySQL is running and can be configured to be executed during MySQL shutdown. One reason to do this is to have a server "pre-warmed" when you perform a server restart. Why this is important is that during server operation the innodb buffer pool will fill up. Typically the server will operate much better when this buffer pool is full instead of being empty or paritally full because the return of data from the buffer pool is much faster than returning data from disk. 

There are four important variables with each

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Homebrew (Mac OS X) and MariaDB 10.0 series
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Today I performed a brew update. I noticed that MariaDB now exists as stable (5.5.30) and devel (10.0.2). Brew formulas also exist for MySQL (5.6.10) and Percona Server (5.5.30-30.2) now. 10.0.3 is around the corner but I wanted to run 10.0.2 now. This is how I did it:

brew unlink mariadb
brew install --devel mariadb

It’s that simple!

Related posts:

  • Using MariaDB on CentOS 6
  • Testing Fedora 19
  • Paybox Services and seeing MariaDB in use
  • Percona Server 5.1.69-14.7 now available: A drop in replacement for MySQL
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    Percona Server for MySQL version 5.1.69-14.7

    Percona is glad to announce the release of Percona Server 5.1.69-14.7 on June 10, 2013. A drop in replacement for MySQL, downloads are available  here and from the Percona Software Repositories. Based on MySQL 5.1.69, this release will include all the bug fixes in it. All of

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    Percona Server 5.6.11-60.3 first Release Candidate now available
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    Percona Server for MySQL version 5.6.11-60.3

    Percona is glad to announce the first Release Candidate release of Percona Server 5.6.11-60.3 on June 3rd, 2013 (Downloads are available here and from the Percona Software Repositories).

    Based on MySQL 5.6.11, including all the bug fixes in it,

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    Percona Server for MySQL 5.5.31-30.3 now available
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    Percona Server for MySQL version 5.5.31-30.3

    Percona is glad to announce the release of Percona Server for MySQL 5.5.31-30.3 on May 24, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.31, including all the bug fixes in it, Percona Server 5.5.31-30.3 is now the current

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    MySQL and Percona Server in LinkBench benchmark
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    Around month ago Facebook has announced the Linkbench benchmark that models the social graph OLTP workload. Sources, along with a very nice description of how to setup and run this benchmark, can be found here. We decided to run this benchmark for MySQL Server 5.5.30, 5.6.11 and Percona Server 5.5.30 and check how these servers will handle such OLTP workloads in the CPU and IO-bound cases. For this test we used a PowerEdge R720 box with a fast PCI-e flash card as storage.

    By default linkbench dataset has 10M ids(after load of data size of datadir ~10GB). We used this dataset

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    Benchmarking Percona Server TokuDB vs InnoDB
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    After compiling Percona Server with TokuDB, of course I wanted to compare InnoDB performance vs TokuDB.
    I have a particular workload I’m interested in testing – it is an insert-intensive workload (which is TokuDB’s strong suit) with some roll-up aggregation, which should produce updates in-place (I will use INSERT .. ON DUPLICATE KEY UPDATE statements for that), so it will produce all good amount of reads.

    A few words about the hardware: I am going to use new the Dell PowerEdge R420 with two Intel(R) Xeon(R) CPU E5-2450 0 @ 2.10GHz, 48GB of RAM and SATA SSD: Kingston HyperX 3K 240 GB.

    Workload: I will use two different schemas. The first schema is from sysbench, and


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    Percona Server 5.5.30 with TokuDB for MySQL
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    Percona Server with TokuDB

    I was excited to see that TokuDB for MySQL from Tokutek is now open source. I believe this is a great technology and it was a significant restriction on the adoption when it was distributed only in a binary format with a proprietary license.

    So I went and built Percona Server 5.5.30 with TokuDB’s storage engine. This is an experimental build and I am just going to play with it. The build procedure is somewhat complicated and confusing and this stage, so I want to share it with the entire MySQL


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    MySQL alternative Percona Server 5.1.68 -14.6 now available
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    Percona Server for MySQL version 5.1.68-14.6

    Percona is glad to announce the release of Percona Server  5.1.68 -14.6 on April 19, 2013 (downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.68, including all the bug fixes in it, Percona

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    trx descriptors: MySQL performance improvements in Percona Server 5.5.30-30.2
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    One major problem in terms of MySQL performance that still stands in the way of InnoDB scalability is the trx_list scan on consistent read view creation. It was originally reported as a part of MySQL bug #49169 and can be described as follows. Whenever a connection wants to create a consistent read, it has to make a snapshot of the transaction states to determine which transactions are seen in the view later. To this end, InnoDB scans trx_list (i.e. the list of currently open transactions) and copies IDs of transactions that have not yet been committed at the

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    Enabling the Verbose InnoDB Lock Monitor in MariaDB and Percona Server for XtraDB+ and XtraDB
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    I enabled the InnoDB Lock Monitor in my MariaDB 5.5 instance (using XtraDB+ as the InnoDB – which is the default in MariaDB) and noticed that while the SHOW ENGINE INNODB STATUS was being logged to the error log, it wasn’t logging the “additional” lock information – it just looked like the plain ‘ole INNODB STATUS.

    Long story short, Percona added a new variable so one has better control over what gets logged:

    innodb_show_verbose_locks

    If off (default), then the InnoDB Lock Monitor logs the normal INNODB STATUS, and if enabled, then it logs it with the extended lock information.

    They also created another variable that goes along with this one (and the InnoDB Lock Monitor), which is:

    innodb_show_locks_held

    This

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    Percona Live MySQL Conference and Expo 2013: It feels like 2007 again
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    I actually don’t remember exactly whether it was in 2006, 2007 or 2008 — but around that time the MySQL community had one of the greatest MySQL conferences put on by O’Reilly and MySQL. It was a good, stable, predictable time.

    Shortly thereafter, the MySQL world saw acquisitions, forks, times of uncertainly, more acquisitions, more forks, rumors (“Oracle is going to kill MySQL and the whole Internet”) and just a lot of drama and politics.

    And now, after all this time some 6 or 7 years later, it feels like a MySQL Renaissance. All of the major MySQL players are coming to the

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    SimCity outages, traffic control and Thread Pool for MySQL
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    For this post I’m going to shamelessly exploit the litany of technical problems SimCity players encountered earlier this month and a few examples of how Thread Pool for MySQL and Percona Server for MySQL can help to prevent such incidents.

    Users of SimCity, a city-building and urban planning simulation video game, encountered network outages, issues with saving progress and problems connecting to the game’s servers following a new release a couple of weeks ago featuring a new engine allowing for more detailed simulation than previous games. During this same time, we happened to be testing the Thread Pool feature in Percona Server for MySQL, and I saw a connection of how

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    MySQL Workshops: Chicago & London this April
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    Percona’s Kenny Gryp leads a recent MySQL workshop

    Percona will be in Chicago and London the week of April 8th delivering two 2-day MySQL workshops. For our MPB readers, we are offering a 15% discount. Just use MPB15A when purchasing your tickets to one or both MySQL workshops.

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    Announcing Percona Server for MySQL 5.6.10-60.2
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    Percona Server for MySQL version 5.6.10-60.2

    Percona is glad to announce the release of Percona Server for MySQL 5.6.10-60.2 on March 14, 2013.  (Downloads are available here and from the experimental Percona Software Repositories). Based on MySQL 5.6.10, including all the bug fixes in it, Percona Server 5.6.10-60.2 is the third ALPHA release

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