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Showing entries 1 to 10 of 813 10 Older Entries

Displaying posts with tag: performance (reset)

Performance of Percona Server for MySQL on Intel Server Systems using HDD, SATA SSD, and NVMe SSD as Different Storage Mediums
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We’re moving along on the first day at Percona Live Data Performance Conference 2016, and I was able to attend a lecture from Intel’s Ken LeTourneau on Performance of Percona Server for MySQL on Intel Server Systems using HDD, SATA SSD, and NVMe SSD as Different Storage Mediums. In this talk, Ken reviewed some benchmark testing he did using MySQL on various types of storage mediums. This talk looked at the …

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TokuDB impacts InnoDB Performance?
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This blog discusses how TokuDB impacts InnoDB performance when the two run in the same environment.

You would think MySQL storage engines are fairly independent of each other, even in the same environment. Enabling one, or changing its configuration, logically should have no impact on the performance of other engines (such as InnoDB) when they are accessing tables. The reality, however, is more complicated than that!    

Now that we’ve shipped …

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Real time query monitoring on MySQL - with 3rd party tool and without
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I've tried out Idera's MySQL Query Explorer, a free tool and I found it easy to use and simple to setup. The only improvement that can be suggested is to add, on the technical requirements page, that your MySQL instance (MySQL Server version 5.5 and newer) must be running with the performance_schema turned on. Otherwise the tool will just display an empty grid. After you've successfully set

STOP SLAVE Improvements for Multi-Threaded Slaves
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When using a multi-threaded slave, the STOP SLAVE command could take a long time to return because the slave waited for workers to catch up processing the queue. This blog post is about improvements that have been made in MySQL 5.6.26 and later to ensure that STOP SLAVE returns quickly when using a multi-threaded slave (MTS).…

Lightning talks at Percona Live Data Performance Conference
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The main schedule for the Percona Live Data Performance Conference is available. Almost everything has been defined. There are tutorials and plenty

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The performance of TLS with MySQL Connector/Python
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I've ran a simple test to see the performance impact of TLS on MySQL connections with MySQL Connector/Python

The test results are in this Jupyter notebook.

TL;DR:

  • Try to reuse connections if you use TLS
  • Establishing TLS connections is expensive (server & client)
  • Improved performance might be possible in the future by using TLS Tickets

Not tested:

  • Difference between YaSSL and OpenSSL
  • Difference between Ciphersuites
  • Performance of larger resultsets and queries
Database Performance Webinar: Tired of MySQL Making You Wait?
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Too often developers and DBAs struggle to pinpoint the root cause of MySQL database performance issues, and then spend too much time in trying to fix them. Wouldn’t it be great to bypass wasted guesswork and get right to the issue?

In our upcoming webinar Tired of MySQL Making You Wait? we’re going to help you discover how to significantly increase the performance of your applications and …

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The performance of MySQL Connector/Python with C Extension
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The source of this post is in this gist on nbviewer.

After reading about the difference between MySQL Connector/Python and MySQLdb on this blog post I wondered how the C Extension option in Connector/Python would perform.

If you want to run the code yourself you'll need: Jupyter/IPython, Python 3, Requests, MySQLdb, Connector/Python, Matplotlib, Pandas and MySQL.

In [1]:

%matplotlib notebook


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POWER8 Accelerated CRC32 merged in MariaDB 10.1
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Earlier on in benchmarking MySQL and MariaDB on POWER8, we noticed that on write workloads (or read workloads involving a lot of IO) we were spending a bunch of time computing InnoDB page checksums. This is a relatively well known MySQL problem and has existed for many years and Percona even added innodb_fast_checksum to Percona Server to help alleviate the problem.

In MySQL 5.6, we got the ability to use CRC32 checksums, which are great in that they’re a …

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Troubleshooting MySQL Performance. Step Zero: Check If You Have a Performance Problem to Troubleshoot
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I lost count of the number of times I had customers come to me for a regular MySQL performance check-up saying “no, we don’t have any performance problems right now”, just to find they do actually have them, they’re just not aware of it. It’s no big surprise this happens when you’re not using your system as actively as your users are.

So let me share with you one trick I’m using to quickly check if the system I’m on has any problems that need troubleshooting. Actually, it’s dead simple. And no, it’s not a slow query log, it’s Threads_running. Let me show you.

Wait, …


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Showing entries 1 to 10 of 813 10 Older Entries

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