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Showing entries 1 to 10 of 64 10 Older Entries

Displaying posts with tag: mysql performance (reset)

Troubleshooting hardware resource usage webinar: Q & A
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In this blog, I provide answers to the Q & A for the Troubleshooting hardware resource usage webinar.

First, I want to thank everybody who attended the May 26 webinar. The recording and slides for the webinar are available here. Below is the list of your questions that I wasn’t …

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MySQL 5.7 By Default 1/3rd Slower Than 5.6 When Using Binary Logs
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Researching a performance issue, we came to a startling discovery:

MySQL 5.7 + binlogs is by default 37-45% slower than MySQL 5.6 + binlogs when otherwise using the default MySQL settings

Test server MySQL versions used:
i7, 8 threads, SSD, Centos 7.2.1511
mysql-5.6.30-linux-glibc2.5-x86_64
mysql-5.7.12-linux-glibc2.5-x86_64

mysqld –options:

--no-defaults --log-bin=mysql-bin --server-id=2

Run details:
Sysbench version 0.5, 4 threads, socket file connection

Sysbench Prepare: 






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Webinar Q & A for Introduction to Troubleshooting Performance: What Affects Query Execution?
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In this blog, I will provide answers to the Webinar Q & A for Introduction to Troubleshooting Performance: What Affects Query Execution?

First, I want to thank you for attending the April, 7 webinar. This webinar is the third in the “MySQL Troubleshooting” webinar series and last introductory webinar in the series. The recording and slides for …

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Introducing MySQL Performance Analyzer
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At Yahoo, we manage a massive number of MySQL databases spread across multiple data centers.

In order to identify and respond to performance issues, we rely on an extremely lightweight and robust web based tool to proactively investigate the issues in them.

The tool has real time tracking features and continually gathers the most important performance metrics, provides visualization and statistical analysis for quickly identifying performance patterns, bottlenecks and possible tuning opportunities.

Features

Lightweight Agentless Java Web Application
Rich User Interface
Gather and Store performance metrics




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WebScaleSQL builds available for Debian 8 and Ubuntu 15.04
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After many months of heavy development and testing, Debian 8 (Jesse) and Ubuntu 15.04 (Vivid Vervet) were released recently.

For those who already upgraded their systems and/or plan do do it in close future, we prepared builds of WebScaleSQL :-)

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Indexing 101: Optimizing MySQL queries on a single table
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I have recently seen several cases when performance for MySQL queries on a single table was terrible. The reason was simple: the wrong indexes were added and so the execution plan was poor. Here are guidelines to help you optimize various kinds of single-table queries.

Disclaimer: I will be presenting general guidelines and I do not intend to cover all scenarios. I am pretty confident that you can find examples where what I am writing does not work, but I am also confident that it will help you most of the time. Also I will not discuss features you can find in MySQL 5.6+ like Index Condition Pushdown to keep things …

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WebScaleSQL 5.6.24 is built and ready to test
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On Tuesday  Steaphan Greene  announced that all currently-pushed changes have now been rebased onto the newly-released upstream MySQL-5.6.24.


The new branch at this point is available on github.

Our .deb and .rpm builds are available in the PSCE …


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Increasing Cloud Database Efficiency – Like Crows in a Closet
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In Mo’ Data, Mo’ Problems, we explored the paradox that “Big Data” projects pose to organizations and how Tokutek is taking an innovative approach to solving those problems. In this post, we’re going to talk about another hot topic in IT, “The Cloud,” and how enterprises undertaking Cloud efforts often struggle with idea of “problem trading.” Also, for some reason, databases are just given a pass as traditionally “noisy neighbors” and that there is nothing that can be done about it. Lets take a look at why we disagree.

With the birth of the information age came a coupling of business and IT. Increasingly …

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WebScaleSQL RPMs available at PSCE repository
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Driven by popularity of previous post about Debian/Ubuntu builds of WebScaleSQL and long discussions during FOSDEM conference this weekend, PSCE engineering team decided to put even more effort into.

We would like to introduce:

  • RPM packages available for download
  • RedHat/CentOS repository

Architectures covered:

  • x86 (32-bit)
  • x86_64 (64-bit)

Please note that “WebScaleSQL does not …

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WebScaleSQL builds for the MySQL Community
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We have been looking at the WebScaleSQL project with great excitement. As with any new enhancements to the MySQL world, we need to test extensively to ensure we can give PSCE customers the best advice possible. Since this project is source only, we decided to add WebScaleSQL builds to our repo, so we could examine the changes being introduced by all the different collaborators.

So what is WebscaleSQL?

WebScaleSQL is a collaboration among engineers from several companies …

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