Wrong memory read from Apache

When specifying the mpm workers to pre-allocate workers:

<IfModule mpm_prefork_module>
    ServerLimit         256
    StartServers         32
    MinSpareServers      16
    MaxSpareServers      32
#    MaxRequestWorkers   150
    MaxConnectionsPerChild 2500
</IfModule>

monit incorrectly specifies reads the amount of RAM used by the process. I currently have monit checking apache with the following:

check process apache with pidfile /usr/local/drupal/apache2/logs/httpd.pid
   start program = "/etc/init.d/apache start"
   stop  program = "/etc/init.d/apache stop"
   if total cpu is greater than 60% for 2 cycles then alert
   if total cpu > 80% for 5 cycles then alert
   if total memory > 3072 MB for 5 cycles then alert
   if children > 250 then alert
   if loadavg(5min) greater than 10 for 8 cycles then stop
   if failed host 127.0.0.1 port 80
       protocol HTTP request /monit/token then alert
   if 5 restarts within 5 cycles then timeout
   group apache

My systems only has 4G of RAM allocated to it:

free -m
              total       used       free     shared    buffers     cached
Mem:           4096       4069         26          0         24        930
-/+ buffers/cache:        3114        981
Swap:          2047

and monit is showing 12G used:

Process 'apache'
  status                            Resource limit matched
  monitoring status                 Monitored
  pid                               26524
  parent pid                        1
  uid                               0
  effective uid                     0
  gid                               0
  uptime                            1h 12m
  children                          64
  memory kilobytes                  20972
  memory kilobytes total            13315844
  memory percent                    0.5%
  memory percent total              317.4%
  cpu percent                       0.0%
  cpu percent total                 0.6%
  port response time                0.500s to 127.0.0.1:80/monit/token [HTTP via TCP]
  data collected                    Wed, 07 May 2014 10:33:22

An example of an app that gets the correct memory usage would be: smem

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