Many folks have reported problems with APC in Cool Stack 1.1 resulting in a SEGV in the CoolTools Forums.
The APC version in Cool Stack 1.1 is APC 3.0.11 and if enabled, extensions such as mysql, dtrace etc. fail with a SEGV. Media Wiki doesn't work either.

We have tested APC 3.0.14 and this version seems to work much better and I'm keeping my fingers crossed that it will work for you as well. Our performance testing doesn't show any substantial differences between 3.0.11 and 3.0.14. If you want to give it a try, simply download the correct file for your platform and rename it to apc.so in your php extensions directory …

Many folks have reported problems with APC in Cool Stack 1.1 resulting in a SEGV in the CoolTools Forums.
The APC version in Cool Stack 1.1 is APC 3.0.11 and if enabled, extensions such as mysql, dtrace etc. fail with a SEGV. Media Wiki doesn't work either.

We have tested APC 3.0.14 and this version seems to work much better and I'm keeping my fingers crossed that it will work for you as well. Our performance testing doesn't show any substantial differences between 3.0.11 and 3.0.14. If you want to give it a try, simply download the correct file for your platform and rename it to apc.so in your php extensions directory …

Many folks have reported problems with APC in Cool Stack 1.1 resulting in a SEGV in the CoolTools Forums.
The APC version in Cool Stack 1.1 is APC 3.0.11 and if enabled, extensions such as mysql, dtrace etc. fail with a SEGV. Media Wiki doesn't work either.

We have tested APC 3.0.14 and this version seems to work much better and I'm keeping my fingers crossed that it will work for you as well. Our performance testing doesn't show any substantial differences between 3.0.11 and 3.0.14. If you want to give it a try, simply download the correct file for your platform and rename it to apc.so in your php extensions directory …

If you're at JavaOne this week, please do visit the "Solaris + AMP" pod (#976). We are demoing the use of SMF and dtrace on Cool Stack. You can see how dtrace can be used to debug and trace the code path through your entire application, starting from the Javascript in the browser, through PHP and finally to MySQL at the back-end. We are also distributing Cool Stack 1.1 on a DVD at the pod.

I will be there on Thursday between 11:00 - 3:00 PM, so please do stop by and say hi. 

Shanti 

Dtrace is one of the coolest things in Solaris 10, adding great observability to applications. A Dtrace provider for PHP that adds probes to function entry and exit points has long been available. I finally got around to integrating this with the php in Cool Stack. 

Bryan Cantrill has some excellent examples of how to use dtrace to trace through your php code, down to the system libraries and kernel (if you want to go that far !) .

Instructions for installing the php dtrace extension

1. Download the shared library for the extension :

    dtrace.so.x86.bz2

…