The MySQL database provides top-level performance. Here are two courses to help you get the most out of your MySQL system.

Troubleshooting MySQL Performance With Sveta Smirnova

This 1 day seminar is an opportunity to interact with Sveta Smirnova, MySQL engineer, expert on MySQL Performance and author of MySQL Troubleshooting.

Sign up for this seminar scheduled for February 28th, 2013 in London, England. 

Sveta will start from basics, working towards more advanced cases that DBAs would usually need years of experience to identify or …

Queries in MySQL, Sphinx and many other database or search engines are typically single-threaded. That is when you issue a single query on your brand new r910 with 32 CPU cores and 16 disks, the maximum that is going to be used to process this query at any given point is 1 CPU core and 1 disk. In fact, only one or the other.

Seriously, if query is CPU intensive, it is only going to be using 3% of the available CPU capacity (for the same 32-core machine). If disk IO intensive – 6% of the available IO capacity (for the 16-disk RAID10 or RAID0 for that matter).

Let me put it another way. If your MySQL or Sphinx query takes 10s to run on a machine with a single CPU core and single disk, putting it on a machine with 32 such cores and 16 such disks will not make it any better.

But you knew this already. Question is – can you do something about it?

In case of Sphinx – indeed you can! And with very little …

RDS instance details

• sysbench seeded 100Gb database and then snapshotted
• 1Tb of RDS storage for the database
• RDS MySQL 5.5.27
• Default my.cnf RDS configuration except (find the full 'show global variables' output at the end of this post)
  • performance_schema is enabled
  • innodb_flush_logs_at_trx_commit = 0
• provisioning an RDS instance for each instance size / PIOPS configuration from the seeded database. (10 in total) 

Test details

• Amazon RDS 
• Within an AWS VPC
• US-East

First warm up innodb by running sysbench with options

• oltp table size 1000000000
• max-requests 0
• max-time 300 (5 minute warm up)
• oltp test mode complex
• oltp index …

Get the most from MySQL Server's top-level performance by improving your understanding of performance tuning techniques.

MySQL Performance Tuning Class

In this 4 day class, you'll learn practical, safe, highly efficient ways to optimize performance for the MySQL Server. You can take this class as:

• Training-on-Demand: Start training within 24 hours of registering and follow the instructor-led lecture material through streaming video at your own pace. Schedule time lab-time to perform the hands-on exercises at your convenience.
• Live-Virtual Class: Follow the live instructor led class from your own desk - no travel required. There are already a range of events on the schedule to suit different timezones and with delivery in languages including English and German.
• In-Class Event: Travel to a training center to follow this class.

For more information on this class, to see the …

(Note: when I’m talking about MySQL I usually assume InnoDB storage engine. Any other case I explicitly tell this is MyISAM or Memory etc.)

I’ve heared an interesting aproach of using Master-slave replication in MySQL.

Thesis

So the theory was that since updates by primary keys are fast and by secondary keys are slow the slave has to be queried for the primary key and then run the updates by the fetched primary keys. To make this in context and more understandable:

Original query

UPDATE table_for_test SET value_to_change = 123 WHERE cond_column_1 = 987 AND cond_column_2 > 765;

This query get splitted to two different query. First query has to be run on the slave to fetch the primary keys:

SELECT pr_id_col FROM table_for_test WHERE cond_column_1 = 987 AND cond_column_2 > 765;

When we have the values we can go to the master and update the necessary records. …

Twitter VP of Infrastructure Operations Engineering Mazen Rawashdeh shared news and numbers yesterday on his blog:

"Last night, the world tuned in to Twitter to share the election results as U.S. voters chose a president and settled many other campaigns. Throughout the day, people sent more than 31 million election-related Tweets (which contained certain key terms and relevant hashtags). And as results rolled in, we tracked the surge in election-related Tweets at 327,452 Tweets per minute (TPM). These numbers reflect the largest election-related Twitter conversation during our 6 years of existence, though they don’t capture the total volume of all Tweets yesterday."

"Last night, Twitter averaged about 9,965 TPS from 8:11pm to 9:11pm PT, with a one-second peak of 15,107 TPS at 8:20pm PT and a one-minute peak of 874,560 TPM. …

While we were at MySQL Connect last month, we interviewed long-time MySQL developer JD Duncan about integrating NoSQL and JavaScript with MySQL. His team developed the Node.js API for MySQL. This week, we present the interview we did. In Ear Candy, we discuss what makes a senior DBA, and in At the Movies we present a ScaleBase webinar.

Events
Oracle's "Scale with MySQL" seminars:
Bucharest Romania, Tuesday 13 November
Madrid, Tuesday 27 November

read more

To fully harness the continued improvements in performance tuning you get with MySQL, take the MySQL Performance Tuning course.

This 4 day class teaches you practical, safe, highly efficient ways to optimize performance for the MySQL Server. You will learn the skills needed to use tools for monitoring, evaluating and tuning. 

You can take this course in the following three ways:

• Training-on-Demand: Follow this course at your own pace and from your own desk with streaming video of instructor delivery and booking time to follow hands-on exercises at your own convenience.
• Live-Virtual: Attend a live instructor-led event from your own desk. Choose from the numerous events on the schedule.
• In-Class:  Travel to an education center to follow this class. A sample of events on the schedule is shown below:

Solid State Drive (SSD) have made it big and have made their way not only in desktop computing but also in mission-critical servers. SSDs have proved to be a break-through in IO performance and leave HDD far far behind in terms of Random IO performance. Random IO is what most of the database administrators would be concerned about as that is 90% of the IO pattern visible on database servers like MySQL. I have found Intel 520-series and Intel 910-series to be quite popular and they do give very good numbers in terms of Random IOPS. However, its not just performance that you should be concerned about, failure predictions and health gauges are also very important, as loss of data is a big NO-NO. There is a great deal of misconception about the endurance level of SSD, as its mostly compared to rotating disks even when measuring endurance levels, however, there is a big difference in how both SSD and HDD work, and that has a direct impact on the endurance …

Today, one of the MySQL database server response time has been increased within the pool of servers and noticed it was returning the query in 0.20 secs (randomly) as opposed[...]