Until today, the Munin APC plugin for Drupal displayed SMA and Cache info on the same graph, meaning RAM allocation and use coexisted with hit-related indicators, like the number of hits, misses, insertions and deletions.

In most cases, this proved to be a not-so-good idea:

• in the short term and for smaller sites, memory allocation dwarfed hits counters, making them illegible
• vice-versa, in the longer term and for bigger sites, hit counters tended to dwarf memory allocation numbers

Starting with version drupal-6--1-0-dev11b1401, these two graphs are now separated.