Actually migrating the last openACS app over to Pyramid in the next week or so. Not from a failure point of OpenACS or AOLServer - both products have worked very well.
As far as performance, I found it to be somewhat akin to Apache + a moderate CMS. It scaled better than bare apache which at the time was a large consideration. Only one of the projects ever hit a point where scalability became a concern.
I think Philip Greenspun's thinking on CMS design and entrepreneurship had quite an impact on my thought processes.
OpenACS's code - not really a stellar example of well written code. Functional, but messy.
As far as performance, I found it to be somewhat akin to Apache + a moderate CMS. It scaled better than bare apache which at the time was a large consideration. Only one of the projects ever hit a point where scalability became a concern.
I think Philip Greenspun's thinking on CMS design and entrepreneurship had quite an impact on my thought processes.
OpenACS's code - not really a stellar example of well written code. Functional, but messy.