I started my company about a year ago, but I’ve been doing consulting for a long time. In fact, my first job in the IT industry was working for a consulting firm. Before that, starting as far back as grade school, I was involved in a lot of volunteer civic and community service activities. I admire companies who get involved in their communities, or even outside of their communities, wherever help is needed.

As part of my business plan, I’ve put in place a policy of accepting one pro-bono consulting project per year. So far, I haven’t gotten any requests for free consulting work, so here’s my public shout out to let you know what types of services are available:

1. Speaking or Training. My specialties are things like advanced Linux administration and SQL, but I’m perfectly capable of delivering content for people who just need to know how the internet works, or want to …

I started my company about a year ago, but I’ve been doing consulting for a long time. In fact, my first job in the IT industry was working for a consulting firm. Before that, starting as far back as grade school, I was involved in a lot of volunteer civic and community service activities. I admire companies who get involved in their communities, or even outside of their communities, wherever help is needed.

As part of my business plan, I’ve put in place a policy of accepting one pro-bono consulting project per year. So far, I haven’t gotten any requests for free consulting work, so here’s my public shout out to let you know what types of services are available:

1. Speaking or Training. My specialties are things like advanced Linux administration and SQL, but I’m perfectly capable of delivering content for people who just need to know how the internet works, or want to …

Microsoft has announced that it is to contribute code to the Linux kernel development effort under the GNU General Public License (GPL) v2. What on earth does it all mean? Here’s our take on the situation. With thanks to Jay Lyman for his contribution to the following:

Q. This is a joke, right?

A. Not at all, although if any announcement is better suited to the image above, we can’t think of one. Microsoft has announced that it is going to contribute code to Linux under the GPLv2.

Q. What code is Microsoft contributing?

A. Microsoft is offering 20,000 lines of its own device drivers to the Linux kernel that will enable Linux to run as a guest …

The Call for Papers for the OpenSQL Camp 2009 (European Edition) has ended yesterday — we received 27 excellent session proposals from various Open Source Database projects. I would like to say a big "Thank You" to everyone who submitted a talk! In the beginning I was a bit concerned that the conference would become too MySQL-centric, but this fortunately changed in the last few days.

Sadly we now have more than double the amount of sessions than we can actually host, which means that we will have to review and vote on the sessions to distill the final program. We've formed a small committee that will perform this task (currently consisting of …

Absolutely nothing?

5.4.0 was released with a change in the MySQL Binary distributions, delivering only 1 64bit Linux platform and two Sun Solaris platforms. This was officially announced on April 21 2009 however the 5.4.0 Release Notes state 05 April 2009. So it’s not a big deal, but consistency would be nice.

I’ve seen in a few posts 5.4.1, so I decided to try it out. Spending the time to read what’s changed in 2 months with the 5.4.1 Release Notes before I go downloading and installing, you read.

This release does not differ from 5.4.0 …

Look at MySQL bug reports of course? Well actually I’m writing multiple blog posts, and I was confirming additional reference sources and links when I came across MySQL Bug #29847 - Large CPU usage of InnoDB crash recovery with a big buf pool.

Taking the time to actually read the information exchange I stumble upon.

[8 Jun 23:29] liz drachnik

Hello Heikki - 

In order for us to continue the process of reviewing your contribution to MySQL - We need
you to review and sign the Sun|MySQL contributor agreement (the "SCA")

The process is explained here:
http://forge.mysql.com/wiki/Sun_Contributor_Agreement

Getting a signed/approved SCA on file will help us facilitate your contribution-- this
one, and others in the future.

Thank you ! 

Liz Drachnik  - Program Manager - MySQL

Oops. Well it made me laugh out loud for so many reasons. First your talking to the …

Recently with a client while running a number of disaster recovery tests I came across a nasty situation which was not part of the original plan and provided a far worse disaster situation then expected.

I should preface this condition with some of the environment conditions.

• MySQL 5.0 Enterprise 5.0.54
• RHEL 5 64bit
• Master and 2 Slaves
• MySQL Data and MySQL Binary Logs/MySQL Error Logs are on separate disk partitions

While running stress tests under high load, we tested the filling of partition containing the logs. This partition included the binary log and MySQL error log.

The observed output was.

• An error message was written to the MySQL error log. See below.
• Application throughput dropped, but did not stop.
• Binary logs stopped occuring.
• MySQL proactively stopped logging but continued to process …

As I had written earlier in Understanding InnoDB MVCC, I am trying to understand why InnoDB is taking a lock on data during an UPDATE when I do not expect this to happen.

Not wanting to go looking at the InnoDB source code to understand the problem, I’m endeavouring to possibly use existing MySQL monitoring to try and understand the problem better. In this case, I’m going to investigate SHOW ENGINE INNODB STATUS first. An old but still relevant article for reference is SHOW INNODB STATUS walk through. The MySQL High Performance book is also a good starting reference.

I’ve just installed 5.1.36 on a new Linux 64 bit laptop for this test.

For now all I’ve done is ensure the innodb_buffer_pool_size is sufficient …

Funding for Aptana and Jolicloud. Ingres targets MySQL. Trent Reznor on Open Core (sort of). And more.

Follow 451 CAOS Links live @caostheory on Twitter and Identi.ca
“Tracking the open source news wires, so you don’t have to.”

Funding
# Aptana raised $7.8m in funding from Rembrandt Venture Partners and Accel Partners.

# Jolicloud raised $4.2m in series A funding for a Linux-based Netbook OS.

Not with a bang…
# Sun reported preliminary revenues for Q4 2009 of $2.58bn to $2.68bn, compared to $3.78bn a year ago.

Best of the rest
# Ingres …

The MySQL KILL command as the name suggests kills queries that are running.

After identifying the Id using the SHOW PROCESSLIST command, the User of the connection/thread or a database user with SUPER privileges can execute KILL [id]; to remove the connection/thread.

However, there is an ability to kill just the query that is being executed rather the entire connection. The default when not specified is to kill the connection, however you can optional specify the CONNECTION or QUERY keywords.

For example, below is an interactive test.

Thread 1:

mysql> select sleep(10);

Thread 2:

mysql> show processlist;
+----+------+-----------+------+---------+------+-----------+------------------+
| Id | User | Host      | db   | Command | Time | State     | Info             | …