APC

I have been working on upgrading the caching contrib modules to Drupal 6 and started to notice some patterns and duplicated code, which led me to think Drupal's approach to caching in general. We currently have a fairly limited API for caching, but we have a magic bullet that helps us overcome some of these weaknesses: the cache.inc override system. Anyone who has spent time on large production sites knows that one of the easiest ways to see better performance on your Drupal system is to use one of the existing cache mechanisms that I spoke about at Drupalcon Boston.

I have been working on client problem that causes their site to segfault every time any serious load hits.  We have tried all kinds of fixes for this to no avail.  What we have been doing to rectify the problem was to run the logwatcher script from Workhabit (The company formerly known as Firebright).