Performance Blog

Cool Stack Roadmap

Posted on: October 8, 2008

We released Cool Stack 1.3.1 recently. This was the last release that was built to work on releases as old as Solaris 10 01/06 (Update 1). Going forward, future versions of the stack will only be supported on newer Solaris 10 updates. So I’d like to urge everyone who is running older releases to please schedule their systems for upgrade. We highly recommend that you upgrade to at least Solaris 10 01/08 (Update 5) as it has many performance, security and other fixes.

For some time now, we’ve had two different stacks for Solaris 10 and OpenSolaris – Cool Stack for Solaris 10 and Web Stack for OpenSolaris. We cannot continue to sustain this model  where we have two different source bases with slightly different versions of various components. Further, there has been interest from some large customers for a single stack to be supported on Solaris 10, OpenSolaris as well as Linux. These customers also wanted production support for the stack.

To enable a unified stack, we are now transitioning Cool Stack to Sun Web Stack. This new stack was announced in OSCON in July. It will be very similar to Cool Stack in that it will be separately downloadable but it will be a full-fledged product in that customers who want production support, can now purchase it. The stack will continue to be available free of charge with limited support via a forum.

The first version of Sun Web Stack will be 1.4 (keeping the Cool Stack versioning in place) and should be available in November. Current Cool Stack 1.3.x customers may not see new functionality in terms of upgrades to components in this release as we are trying to sync it to the current versions of components in OpenSolaris. However, Zones users may want to take a look at this release as it does separate out the binaries from the configuration/log files, making it easier for multiple zones to share a single installation in /opt and yet use custom configuration/logs which will be located in /etc, /var etc. similar to other Solaris applications.

With this transition to Sun Web Stack, I will no longer be directly associated with the development of the stack. I will however keep an eye on it’s performance and continue to push for increased performance via compiler optimizations or required source changes. We in the performance team will continue to use, test and analyze the performance of many of the components in the stack. So hopefully you will continue to monitor my blog as I talk more about the performance aspect of the stack.

Please do continue to use Cool Stack and Sun Web Stack as that product comes out. Sun is committed to a high-performing web stack of open source components on all platforms.


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