Scaling MySQL and ZFS on T5440

Solid State Disks : a 2009 fashion

This technology is not new : it originates in 1874 when a German physicist named Karl Braun (pictured above) discovered that he could rectify alternating current with a point-contact semiconductor. Three years later, he had built the first CRT oscilloscope and four years later, he had built the first prototype of a Cat's whisker diode, later optimized by G. Marconi and G. Pickard. In 1909, K. Braun shared the Nobel Prize for physics with G. Marconi.

The Cat's whisker diodes are considered the first solid …

The first cut of a Java EE implementation of Olio is now checked into the repository. The file docs/java_setup.html gives instructions on how to build and setup this implementation. The implementation uses JSP, servlets, JPA for persistence, yahoo and Jmaki widgets for AJAX etc. The web application is located in webapp/java/trunk and the load driver, database and file loaders etc. are in workload/java/trunk.

Check it out.

The first cut of a Java EE implementation of Olio is now checked into the repository. The file docs/java_setup.html gives instructions on how to build and setup this implementation. The implementation uses JSP, servlets, JPA for persistence, yahoo and Jmaki widgets for AJAX etc. The web application is located in webapp/java/trunk and the load driver, database and file loaders etc. are in workload/java/trunk.

Check it out.

Not so long ago, in a galaxy not very far away... a middle-aged programmer battled to free memory from the dark side of the hibernate query cache.  He was successful, or so it seemed. For the query cache memory problems had risen from the ashes -- stronger and more bloated than ever...

What's With All This Garbage?
We hit a case at work (again), where the java server process came to a grinding halt.  It wasn't dead, it just wasn't making much forward progress either.  A quick look at the heap stats showed we were nearly at capacity and that garbage collection was eating all CPU time, thus not allowing any real work to happen.  Looks like it is time to whip out the ol' memory profiler.  This time I went with Eclipse's Memory Analysis Tool .  …

Over the past two weeks I've been mostly focused on MySQL, but the big-ticket item in the Sun/Oracle deal is not databases, it's Java. However, it's also the domain which is far less clear to predict. It was a big deal when Sun decided to open source Java, but the fact of the matter is that the first fully open source release isn't out yet, and Sun has been keeping the testing and certification kit off-limits for open source communities. This means it would still be far too easy for OpenJDK to be killed off.

I've been keeping clear of Oracle for several years, and can't even begin to guess what their position on this is. Oracle has been a pretty active contributor to Linux in particular for several years, and I'm sure their open source strategy and how it works together with their business is pretty well established within at least the engineering …

OIN aims to cut the FAT. What is the point of the GPL? Black Duck takes flight. Ingres delivers Salesforce.com appliance. The ongoing fallout from Oracle-Sun. Feedback on the Bee Keeper model. And more.

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OIN aims to cut the FAT
# The Open Invention Network announced plans to review the Microsoft FAT patents at the center of its recent skirmish and settlement with TomTom. have been placed for prior art review on the Post-Issue …

Hi all,

If you expand a database connection node in the Services window of the IDE, you'll notice a new look. What are all of these nodes under the connection nodes? They're schemas. For the most part, if you're using Java DB, the only schema you'll need to worry about is the app schema. I'd be interested in knowing what developers have used the other schemas for.

When you expand the MySQL conect node, what you get is a list of databases you've created in MySQL. These database are actually schemas you've created in your MySQL database.

There you have it.

Cheers!

--James

Oracle buys Sun. Sun previews MySQL update, makes GlassFish Portfolio, OpenSSO and OpenDS available on EC2. Numerous partner announcements from the MySQL conference. Red Hat maps open source adoption. And more.

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Oracle to acquire Sun
Unless you’ve been living under a rock (or like me you decided to take a few inappropriately-timed days off) you probably noticed that Oracle announced an agreement to acquire Sun this week. Jay delivered our assessment on Oracle’s open source credentials, while I followed up with some …

Files used in conference presentation here: UC2009 presentationI think todays presentation for Perl Stored Procedures for MySQL was quite successful. The audience was quite engaged and asked questions throughout (yes, I invited questions through the talk). I made sure to mention Eric Herman's Java plugin because even though he didn't get time to submit a talk, the work is noteworthy. Sometimes I

The big news to kick off this week was Oracle’s announced acquisition of Sun Microsystems. There is already a lot of discussion of the integration challenges, how Oracle is getting into hardware (or as Matt Asay describes it, having an ‘iPod moment’) and of course, the implications for open source software. What stands out to me is the fact that the world’s biggest proprietary database player — one of few software giants that still sells and supports primarily proprietary software — will own the world’s most popular open source database, MySQL. It is unclear how significantly MySQL figures into the deal, but given Sun spent $1b acquiring it and further invested in its enterprise readiness and use, …