Showing entries 1 to 10
Displaying posts with tag: Query Analytics (reset)
Tired of MySQL Making You Wait? Webinar: Questions and Answers

We’d like to thank everybody for joining us on January 7th for our “Tired of MySQL Making You Wait?” webinar with Percona’s Alexander Rubin, Principal Consultant and SolarWinds’ Janis Griffin, Database Evangelist.

Too often developers and DBAs struggle to pinpoint the root cause of performance issues and then spend too much time in trying to fix them. In the webinar, we discussed how you can significantly increase the performance of your applications while also reducing database response time.

You can find an archived version of the webinar here.

Below are the questions that were asked during the webinar, with responses from Alex and Janis. If you need further clarification, please respond in the comments.

Thanks again, and we look forward to you joining us at our next webinar (with Percona CEO Peter …

[Read more]
Slow query graphs using Performance Schema and Graphite

I love graphs. They just make things easier when it comes to finding patterns. I also love visibility. Having the ability to known what is going on inside the database is priceless. How about having visibility of the slow queries execution time on a graph? Let’s do it.

We’ve already described how to get query digest using performance schema. Since the MySQL server is already doing the heavy lifting for you with little-to-no overhead, this information is available practically at will. So let’s make some graphs with that data.

To accomplish this I will use the well-known tool Graphite to store and render time-series data. For those who are not familiar with Graphite, it’s actually a 3-piece tool, consisting of:

  • The …
[Read more]
Easy query metrics with MySQL Performance Schema

The MySQL Performance Schema exposes so much data that it’s not trivial to learn, configure, and use. With recently released Percona Agent 1.0.11 you can get query metrics – like min, max, and average query execution time – with a few clicks:

Click “Apply” and about two minutes later you’ll have query metrics from Performance Schema, collected and sent every minute.

Percona Cloud Tools (PCT) and Percona Agent handle all the details. You’ll need MySQL (or Percona Server) 5.6 and Percona Agent 1.0.11 or newer. One caveat at the moment: it …

[Read more]
Faster fingerprints and Go packages for MySQL

I’m happy to announce Go packages for MySQL. Particularly exciting is a new query fingerprint function which is very fast and efficient, but I’ll talk about that later. First, go-mysql is currently three simple Go packages for parsing and aggregating MySQL slow logs. If you’ve been following Percona development, you’ve no doubt heard of Percona Cloud Tools (PCT), a somewhat new performance management web service for MySQL.

One tool in PCT is “Query Analytics” which continuously analyzes query metrics from the slow log. The slow log provides the most metrics and therefore the most performance insight into MySQL. percona-agent, the open-source agent for PCT, uses …

[Read more]
Using Percona Cloud Tools to solve real-world MySQL problems

For months when speaking with customers I have been positioning Percona Cloud Tools (PCT) as a valuable tool for the DBA/Developer/SysAdmin but only recently have I truly been able to harness the data and make a technical recommendation to a customer that I feel would have been very difficult to accomplish otherwise.

Let me provide some background: I was tasked with performing a Performance Audit for one of our customers (Performance Audits are extremely popular as they allow you to have a MySQL Expert confirm or reveal challenges within your MySQL environment and make your database run faster!) and as part of our …

[Read more]
5 great new features from Percona Cloud Tools for MySQL

It’s been three months since we announced anything for Percona Cloud Tools, not because we’ve been idle but because we’ve been so busy the time flew by!  Here’s the TL;DR to pique your interest:

  • EXPLAIN queries in real-time through the web app
  • Query Analytics for Performance Schema
  • Dashboards: customizable, shared groups of charts
  • Install and upgrade the agent with 1 command line
  • Unified UI: same time range, same host wherever you go

Percona Cloud Tools for MySQL is a hosted service providing access to query performance insights for all MySQL uses. After a brief setup, unlock new information about your database and how to improve your applications. There’s a lot more, but let’s just look at these five new features…


EXPLAIN queries in real-time through the web app

[Read more]
Tools and tips for analysis of MySQL’s Slow Query Log

MySQL has a nice feature, slow query log, which allows you to log all queries that exceed a predefined about of time to execute. Peter Zaitsev first wrote about this back in 2006 – there have been a few other posts here on the MySQL Performance Blog since then (check this and this, too) but I wanted to revisit his original subject in today’s post.

Query optimization is essential for good database …

[Read more]
Quick installation guide for Percona Cloud Tools for MySQL

Here in Percona Support, we’re receiving several requests per day for help with Percona Cloud Tools installation steps.

So I decided to prepare a step-by-step example of the installation process with some comments based on experience.  Percona Cloud Tools is a hosted service providing access to query performance insights for all MySQL uses. After a brief setup, you’ll unlock new information about your database and how to improve your applications. You can sign up here to request access to the free beta, currently under way.

Some notes

  • It’s recommended to do the installation under root.
  • If you’re installing pt-agent as root then .pt-agent.conf should be placed in root $HOME
  • You could became root …
[Read more]
Analyzing WordPress MySQL queries with Query Analytics

This blog,, is powered by WordPress, but we never really looked into what kind of queries to MySQL are used by WordPress. So for couple months we ran a Query Analytics (part of Percona Cloud Tools) agent there, and now it is interesting to take a look on queries. Query Analytics uses reports produced by pt-query-digest, but it is quite different as it allows to see trends and dynamics of particular query, in contrast to pt-query-digest, which is just one static report.

Why looking into queries important? I gave an intro in my previous post from this series.

So Query Analytics give the report on the top queries. How to detect which query is “bad”?
One of metrics I am typically looking into is ratio of “Rows …

[Read more]
Percona Cloud Tools: Making MySQL performance easy

One of our primary focuses at Percona is performance. Let me make some statements on what is “performance.”

In doing so I will refer to two pieces of content:

I highly recommend that you familiarize yourself with both of them.


Performance is about tasks and time.
We say that the system is performing well if it executes a task in an acceptable period of time, or that the …

[Read more]
Showing entries 1 to 10