service pmie should be completely independent of pmmgr-managed pmie.
A bug probably somewhere in the rc.d pmie control scripts messes things up.
100% reproducible under 3.11.1 and git pcp.

To reproduce:

# yum install pmmgr
# chkconfi gpmmgr on
# service pmmgr start
[wait a couple of seconds]
# chkconfig pmie on
# service pmie start
# pcp
[observe a copy of pmie run from service* and at least one under pmmgr]
# service pmie stop
[this may fail; pmie sometimes blocks signals, which is a separate bug]
# pcp
[observe all copies of pmie are no longer represented]
# ps awux | grep pmie
[observe pmmgr-managed pmie instances are still running]
# ls -l /var/lib/pcp/tmp/pmie
[observe empty]