pressflow

I was not sure where to post this question. Appologies if this is not the correct place.

I've been looking at PressFlow and it looks nice that it already comes packaged with several performance related patches. Thanks to those who made it available.

However, compared to latest Drupal snapshot, it seems to be missing latest Drupal core patches. If this happens with minor fixes it's ok, but it seems it could also happen with security related issues?

I recently saw someone post in regards to seeing a significant speed boost by switching to PressFlow's "enhanced/streamlined" version of Drupal.

However some googling and reading revealed no benchmarks on how much faster it is on average. Does anyone know how much of a speed gain we're talking about?

For comparison: The number I've seen tossed around for PHP accelerators is 15% for more complex sites.

I've just released two modules for developers and maintainers of performance-intensive sites. The first module provides a new, self-tuning, preemptive cache API for modules. It's called PressFlow Preempt. The second module (named PressFlow Preempt Panels) builds on the first by seamlessly offering cached versions of Panels.