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Showing entries 1 to 30 of 34 Next 4 Older Entries

Displaying posts with tag: Peter Zaitsev (reset)

Inaugural Meet-up Oklahoma City MySQL Meetup
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The inaugural Meet-up Oklahoma City MySQL Meetup is Wednesday, July 23, 2014!
As a special guest speaker, Peter Zaitsev (CEO of Percona and co-author of High Performance MySQL) will be giving a presentation on “Best Indexing Practices”, followed by a Q/A session.

Please RSVP if you plan to attend so we can get a good headcount for food and beverages that will be provided and as always, please spread the word to friends or colleagues in the industry.

It should be a great night and great first event for the MySQL user group in OKC!




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Architecture and Design of MySQL-powered applications: June 11 Webinar
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The architecture of MySQL-powered applications is one of my favorite topics to talk about. It’s a very important topic because if you do not get the architecture right then you’re very likely to fail with your project – either from the standpoint of failing with performance, high availability or security requirements… or failing to deliver on time and at the planned cost.

It’s also a great topic because there is so much knowledge available these days about MySQL-powered applications. MySQL has been around for a rather long time compared with many other solutions – and now we know what architectures have enabled people to build successful MySQL-powered applications and grow them to hundreds of millions of users as well as what applications did not work out.

This level of maturity really allows

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Do not trust vmstat IOwait numbers
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I’ve been running a benchmark today on my old test box with conventional hard drives (no raid with BBU) and noticed something unusual in the CPU utilization statistics being reported.

The benchmark was run like this:

sysbench --num-threads=64 --max-requests=0 --max-time=600000 --report-interval=10 --test=oltp --db-driver=mysql --oltp-dist-type=special  --oltp-table-size=1000000   --mysql-user=root --mysql-password=password  run

Which means: create 64 threads and hammer the database with queries as quickly as possible. As the test was run on the localhost I would expect the benchmark to completely saturate the system – being either using CPU or being blocked on IO nature of this benchmark so it does not spend a lot on database locks, especially as this system has just 2 cores.

Looking at VMSTAT however I noticed

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How MySQL ‘queries’ and ‘questions’ are measured
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MySQL has status variables “questions” and “queries” which are rather close but also a bit different, making it confusing for many people. The manual describing it might not be very easy to understand:

Queries
The number of statements executed by the server. This variable includes statements executed within stored programs, unlike the Questions variable. It does not count COM_PING or COM_STATISTICS commands.
 Questions
The number of statements executed by the server. This includes only statements sent to the server by clients and not statements executed within stored programs, unlike the Queries variable. This variable does not count COM_PING, COM_STATISTICS, COM_STMT_PREPARE, COM_STMT_CLOSE, or COM_STMT_RESET
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Percona University @Montevideo, FISL & São Paulo MySQL Meetup
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Peter Zaitsev at last year’s Percona University event in Montevideo

Later this week I’m excited to depart on a trip to South America. First I will stop in Montevideo, Uruguay, to meet with Percona’s team out there as well as to participate in our next Percona University event on April 29.

For those who do not know, Percona University events are free to attend and packed with technical presentations about MySQL and surrounding technologies, delivered by members of the Percona

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Advisory on Heartbleed (CVE-2014-0160) for Percona’s customers and users
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Over the last few days, the Percona team has spent a lot of time evaluating the impact of the Heartbleed bug (CVE-2014-0160) for our customers and for the users of our software. We published a formal disclosure a few days ago. However, I thought a quick summary and some additional information would be good to provide for our MySQL Performance Blog readers.

First, I want to point out that “Heartbleed” is an issue in a commonly used third-party library which typically comes with your operating system, so there is a lot of software which is impacted. An openly exposed service, which is typically a website or some form of API, can potentially cause the biggest impact for anyone. Even though we talk a lot about MySQL Server (and its variants), it will not be the

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7 Key MySQL clustering technologies – A joint webinar with 451 Research
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I’m looking forward to Wednesday’s joint webinar on MySQL clustering technologies with Matt Aslett, research director of data management and analytics over at 451 Research. We’ll be participating in a live, in-depth discussion of MySQL Clustering for High Availability and Scalability.

Matt will present an overview of the trends driving adoption of clustering technology. He’ll also discuss the key technologies and criteria that developers and administrators need

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PERFORMANCE_SCHEMA vs Slow Query Log
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A couple of weeks ago, shortly after Vadim wrote about Percona Cloud Tools and using Slow Query Log to capture the data, Mark Leith asked why don’t we just use Performance Schema instead? This is an interesting question and I think it deserves its own blog post to talk about.

First, I would say main reason for using Slow Query Log is compatibility. Basic Slow query log with microsecond query time precision is available starting in MySQL 5.1, while

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Looking to upgrade to MySQL 5.6? Check out my webinar on Jan 29!
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We are nearing the one-year anniversary since MySQL 5.6 went GA – which is typically a good time even for the most conservative users to start thinking about upgrading. At this point there is a fair amount of practical use and experience; many bugs have also been fixed (1991 to be exact according to Morgan Tocker).

We also know that MySQL 5.6 has been used in some very demanding environments on a very large scale, such as at Facebook. We also know from the Facebook team, after kindly sharing their upgrade experiences, that it takes a lot of work to upgrade to MySQL

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MySQL 5.7.3 milestone release fixes some of my pet peeves
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It is wonderful to see some of my original pet peeves fixed in MySQL 5.7.3! It has not even taken 10 years

I remember when starting my work at MySQL Support that I would recommend using UNION ALL instead of plain UNION because it would not require duplicate elimination, and as such, would not require the creation of a temporary table in basic cases. Guess what? MySQL actually did it anyway. The learning experience from this incident was to never use common sense alone when thinking about MySQL – test and validate your assumptions because for one reason or another things may work differently from what “obviously makes sense.” I do not want to

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MySQL 5.6 Configuration Optimization Webinar, Sept. 25
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This Wednesday in our next webinar I’ll share how to configure a better-performing MySQL 5.6 server. You’ll lean a practical approach to generating a sensible configuration file that sets what is needed and omits what is not.

Why dedicate an entire webinar to the new configuration settings within MySQL 5.6? Mainly because the default configuration files that come with MySQL 5.6 are not designed for high volume production use, and I’ve seen many MySQL incidents caused by poor configuration. Hopefully my

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September: A busy month for MySQL events
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Now with summer winding down and school back in session, we get into a very busy time with many great opportunities to discover more about MySQL with several excellent MySQL events.

At first I wanted to cover all autumn events here but if I did that this post would be far too long. So instead I’m focusing on a few wonderful MySQL events that I’m going to be involved with in September.

In a few short days we’re running Percona University at Washington, D.C. This free event on September 12 provides a great opportunity to learn about latest

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Percona MySQL University @Portland: June 17
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Peter Zaitsev leads a track at the inaugural Percona MySQL University event in Raleigh, N.C. on Jan. 29, 2013.

Portland is a well-recognized hub for Open Source technologies in the Northwest, home to conferences such as OSCON and Open Source Bridge as well as hosts of OpenSQL Camp in 2009. As such it is a very natural place for our next Percona MySQL University event scheduled for June 17.

We run this event in partnership with

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Webinar: MySQL 5.6 Performance Schema
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This Wednesday, May 15 at 10 a.m. Pacific, I’ll be leading  a Webinar titled, “Using MySQL 5.6 Performance Schema to Troubleshoot Typical Workload Bottlenecks.

In this Webinar I will offer an overview of Performance Schema, focusing on new features that have been added in MySQL 5.6, go over the configuration and spend most time showing how you can use the wealth of information Performance Schema gathers to understand some of the typical performance bottlenecks.

 

Other areas of focus

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Webinar: Best Practices for MySQL Scalability on May 1
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“Best Practices for MySQL Scalability.”

If you have not already done so, I encourage you to register for my “Best Practices for MySQL Scalability” Webinar which will take place on May 1st at 10 a.m. PST. This will be an overview presentation, led by me and providing a high-level look at the components of MySQL scalability: application architecture, MySQL version and configuration, choosing hardware and operating systems. For each area we’ll investigate the most important best practices. Talk to you on

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Percona Live MySQL Conference 2013 wrap-up
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The Percona Live MySQL Conference & Expo 2013 was April 22-25 in Santa Clara, California. This was Percona’s second year organizing the conference and we were very pleased with the event and the feedback (check the #perconalive hashtag for a sampling of the great comments such as this from Tom Krouper or this from John Goulah or this from Jeremy Tinley or this from SF MySQL Meetup).

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10 years of MySQL User Conferences
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In preparing for this month’s Percona Live MySQL Conference and Expo, I’ve been reminiscing about the annual MySQL User Conference’s history – the 9 times it previously took place in its various reincarnations – and there are a lot of good things, fun things to remember.

2003 was the year that marked the first MySQL user conference independently organized by MySQL AB. It was called the “MySQL Users Conference” and took place at the Double Tree

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What I’m looking forward to at Percona Live (MySQL Users Conference)
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This is my 10th year attending and speaking at the MySQL Users Conference (as the Percona Live MySQL Conference and Expo was originally called back in 2003), and for me it does not get tiring. So what is there in this conference for me as an attendee, speaker and businessman?

Learning. First and foremost the conference is still a great learning venue for me. I learn about new technologies in the MySQL space as well as how these technologies can be applied in practice. I learn what works and what does not. I learn from the sessions, expo hall exhibitors and hallway

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Why MySQL Performance at Low Concurrency is Important
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A few weeks ago I wrote about “MySQL Performance at High Concurrency” and why it is important, which was followed up by Vadim’s post on ThreadPool in Percona Server providing some great illustration on the topic. This time I want to target an opposite question: why MySQL performance at low concurrency is important for you.

I decided to write about this topic as a number of recent blog

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Percona MySQL University coming to Toronto this Friday!
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Percona CEO Peter Zaitsev leads a track at Percona MySQL University in Raleigh, N.C. on Jan. 29, 2013.

Percona MySQL University, Toronto is taking place this Friday and I’m very excited about this event because it is a special opportunity to fit a phenomenal number of specific and focused MySQL technical talks all into one day, for free.

Over the course of the day we will cover some of the hottest topics in the MySQL space. There will be talks covering topics like MySQL 5.6, MySQL in the Cloud and High Availability for MySQL, as well as

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Join me for ‘MySQL 5.6: Advantages in a Nutshell.’ Webinar. March 6 at 10 a.m. PST
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“MySQL 5.6: Advantages in a Nutshell.” March 6 at 10 a.m. PST with host Peter Zaitsev.

This Wednesday (March 6 at 10 a.m. PST) I’ll be presenting a webinar titled “MySQL 5.6: Advantages in a Nutshell.” In this presentation, I will provide a brief overview of the advantages MySQL 5.6 offers. My focus is a practical one – to identify the conditions in which one or another feature can be successfully used providing significant gain, explicitly or transparently. There has been a lot of pretty cool stuff done in

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Percona MySQL University in Montevideo and Buenos Aires
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Following our Percona MySQL University event in Raleigh,NC Percona MySQL University comes to South America! We’ll have a Full day FREE MySQL Technical Educational events in Montevideo on February 5th, 2013 and Buenos Aires on February 7th.

I’m very excited to bring these events to MySQL Community in Uruguay and Argentina. This is my first trip to South America and it looks like it is going to be a lot of fun!

With Percona MySQL University events, we focus on MySQL Education for broad group of users. We’ve specially prepared talks that will be interesting for people just

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Industrial-strength MySQL applications using Percona and Continuent
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MySQL is the first choice for a large majority of web applications thanks to its ease of use and low cost of operation. However, running big apps on MySQL is still a challenge even for experts. In this webinar we show you how to combine Percona Server and Percona XtraBackup with Continuent Tungsten to build business-critical systems capable of processing hundreds of millions of transactions per
Webinar: Industrial-Strength MySQL Applications Using Percona and Continuent
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Wednesday, 11/28 @ 10 am PT/ 1 pm ET Register at http://www.percona.com/webinars/industrial-strength-mysql-applications-using-percona-and-continuent MySQL is the first choice for a large majority of web applications thanks to its ease of use and low cost of operation. However, running big apps on MySQL is still a challenge even for experts. In this webinar we will show you how to combine
Q&A: MariaDB and the Open Database Alliance
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Following the launch of the Open Database Alliance a number of interesting reports were published that examined its role in establishing MariaDB as an alternative development branch for MySQL and as a vendor-neutral open source database collective.

I had a few questions myself, which Monty Widenius and Peter Zaitsev, CEO of Percona, were good enough to answer for me via email. They also agreed for the exchange to be published here. This is what they had to say:

Q: Monty has stated that the intention is to open up the Alliance to include other open source database projects - any indication of how this would be done given

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Are closed-source MySQL storage engines compatible with MariaDB?
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Following the launch of the Open Database Alliance some people have assumed that it is only a matter of time before MariaDB becomes the de facto replacement for MySQL.

That assumes that Oracle will allow the development of MySQL to stagnate, either deliberately or through neglect - something that we have expressed our doubts about, but even if that were the case it appears that the GPL (or more to the point MySQL’s dual licensing strategy) may restrict the potential for MariaDB.

Curt Monash recently raised the question of whether closed-source storage engines can be used with MySQL (and, by

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What is it like to write a technical book?
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As you probably know, I recently finished writing a book with a few co-authors. I kept notes along the way and wanted to describe the process for those who are thinking about writing a book, too.

Update: see the followup post for more of the story, including my editor’s responses.

I think it’s important to be objective; my purpose here is to help prospective authors get a feeling of what it’s like, and it’s not all good (but I’d encourage people to do it anyway). Hopefully I won’t come off as sounding peeved at anyone or like I’m trying to put people down. I’ll have a lot to say about what went right and wrong, and how it helped and hindered

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MySQL Conference and Expo 2008, Day One
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Today is the first day at the conference (aside from the tutorials, which were yesterday). Here’s what I went to:

New Subquery Optimizations in 6.0

By Sergey Petrunia. This was a similar session to one I went to last year. MySQL has a few cases where subqueries are badly optimized, and this session went into the details of how this is being addressed in MySQL 6.0. There are several new optimization techniques for all types of subqueries, such as inside-out subqueries, materialization, and converting to joins. The optimizations apply to scalar subqueries and subqueries in the FROM clause. Performance results are very good, depending on which data you choose to illustrate. The overall point is that the worst-case subquery nastiness should be resolved. I’m speaking of WHERE NOT IN(SELECT…) and friends. It remains to be seen how

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More progress on High Performance MySQL, Second Edition
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Whew! I just finished a marathon of revisions. It's been a while since I posted about our progress, so here's an update for the curious readers.

Progress on High Performance MySQL, Second Edition
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It's been a while since I said anything about the progress on the book. That doesn't mean we are not still working on it, though.

As Peter wrote a while ago, he is basically wearing the hat of a very advanced technical reviewer at this point. We've finished writing all the chapters from his detailed outlines. He has worked through about half the chapters, and I'm continuing to spend my evenings and weekends and holidays (yes, nearly all my free time -- just ask my wife!) writing some new material (an appendix on EXPLAIN, for example), finishing unfinished things marked with TODO in the text, and revising chapters after Peter reviews them. Vadim is working on benchmarks. For example, he just finished some benchmarks for

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Showing entries 1 to 30 of 34 Next 4 Older Entries

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