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Displaying posts with tag: mongodb (reset)
Percona Live Europe Amsterdam 2016 Tutorial Schedule is Up!

This blog post lists the Percona Live Europe Amsterdam 2016 tutorial schedule.

We are excited to announce that the tutorial schedule for the Percona Live Europe Amsterdam Open Source Database Conference 2016 is up!

The Percona Live Europe Amsterdam Open Source Database Conference is the premier event for the diverse and active open source community, as well as businesses that develop and use open source software. The conferences have a technical focus with an emphasis on the core topics of MySQL, MongoDB, and other open source databases. Tackling subjects such as analytics, architecture and design, security, operations, …

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The Value of Database Support

In this post, I’ll discuss how database support is good for your enterprise.

Years ago when I worked for the MySQL Support organization at the original MySQL AB, we spoke about MySQL Support as insurance and focused on a value proposition similar to that of car insurance. You must purchase car insurance before the incident happens, or insurance won’t cover the damage. In fact, most places around the world require automobile insurance. Similarly, many organizations that leverage production-use technology have their own “insurance” by means of 24/7 support.

In my opinion, this is a very one-sided view that does not capture the full value (and ROI) that a database support contract with Percona provides. With a Percona support contract, you are assured that your database environment …

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Percona Live Europe, Amsterdam 2016: Speaking Gets You the Whole Community Event!

Come speak at Percona Live Europe, and get access to the entire conference.

The Percona Live Open Source Database Performance Conference Europe 2016 is the premier event for the rich and diverse MySQL, MongoDB and ODBMS ecosystems in Europe. Attendees include DBAs, SysAdmins, developers, architects, CTOs, CEOs, and vendors from around the world. It’s a great place to meet and participate with the open source community.

Want to go, but having a hard time getting the budget approved? We have a solution: be a speaker and get a complimentary full pass!

Submit your speaking proposal for a Percona Live session and share your MySQL, MongoDB and ODBMS ideas, case studies, best practices, and …

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Call for Percona Live Europe MongoDB Speakers

Want to become one of the Percona Live Europe MongoDB speakers? Read this blog for details.

The Percona Live Europe, Amsterdam call for papers is ending soon and we are looking for MongoDB speakers! This is a great way to build your personal and company brands. It also provides you with a complimentary full conference pass (which is good for your budget)!

If you haven’t submitted a paper yet, here are a list of ideas we would love to see covered at this conference:

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Utilizing OpenStack Trove DBaaS for deployment management

Trove is used for self service provisioning and lifecycle management for relational and non-relational databases in an OpenStack cloud. Trove provides a RESTful API interface that is same regardless of the type of database. CLI tools and a web UI via Horizon are also provided wrapping Trove API requests.

In simple terms. You are a …

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MongoDB Administration Checklist for MySQL DBAs

In this blog, I discuss a MongoDB administration checklist designed to help MySQL DBAs.

If you are MySQL DBA, starting MongoDB administration is not always an easy transition. Although most of the concepts and even implementation are similar, the commands are different. The following table outlines the typical MySQL concepts and DBA tasks (on the left) to corresponding MongoDB ones (on the right). If you happen to be a MongoDB DBA and want to learn MySQL administration, you can use the same table looking from right to left.

I’ve also created a webinar, MongoDB administration for MySQL DBA, that explains the above concepts. You can download the slides to use as a reference.

Don’t forget …

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Speaking in June 2016

I have a few upcoming speaking engagements in June 2016:

  • – June 9-10 2016 – Buenos Aires, Argentina – never been to this event but MariaDB Corporation are sponsors and I’m quite excited to be back in Buenos Aires. I’m going to talk about the MySQL ecosystem in 2016.
  • SouthEast LinuxFest – June 10-12 2016 – Charlotte, NC, USA – I have a few talks here, a bit bummed that I’m going to be missing the speaker dinner, but I expect this to be another great year. Learn about MariaDB Server/MySQL Security Essentials, the MySQL ecosystem in 2016, and about distributions from the view of a package.
  • NYC MySQL Meetup – June 27 2016 – New York, USA – I’m …
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Webinar Thursday May 19, 2016: MongoDB administration for MySQL DBA

Please join Alexander Rubin, Percona Principal Consultant, for his webinar MongoDB administration for MySQL DBA on Thursday, May 19 at 10 am PDT (UTC-7).

If you are a MySQL DBA and want to learn MongoDB quickly – this webinar is for you. MySQL and MongoDB share similar concepts so it will not be hard to get up to speed with MongoDB.

In this talk I will explain the following MongoDB administration concepts:

  • Day to day operations for MongoDB
  • Storage engines and differences with MySQL storage engines
  • Databases, collections and documents
  • Replication in MongoDB and the difference with MySQL replication
  • Sharding in MongoDB
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smartctl and Samsung 850 EVO

I have 3 small servers at home for performance testing. Each is an Intel NUC with 8G of RAM and a core i3 via 5i3RYH.  These work quietly under my desk. I have been collecting results for MongoDB and MySQL to understand storage engine performance and efficiency. I use them for single-threaded workloads to learn when storage engines sacrifice too much performance at low concurrency to make things better at high concurrency.

Each NUC has one SATA disk and one SSD. Most tests use the SSD because the disk has the OS install and I don't want to lose the install when too much testing makes the disk unhappy. My current SSD is Samsung 850 EVO with 120G and one of these became sick.
[3062127.595842] attempt to …

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TRIM, iostat and Linux

I use iostat and vmstat to measure how much CPU and storage is used during my performance tests. Many of the database engines have their own counters to report disk IO but it is good to use the same measurement across engines. I use the "-k" option with iostat so it reports KB written per second per device.

The rate of writes to storage can be overstated by a factor of two in one case and I don't think this is widely known. When TRIM is done for an SSD then the Linux kernels that I use report that as bytes written. If I create an 8G file then I will see at least 8G of writes reported by iostat. If I then remove the file I will see an additional 8G of writes reported by iostat assuming TRIM is used. But that second batch of 8G of writes wasn't really writes.

One of the database engines that I evaluate, …

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