Man pages matching name pmdadaemon in section 3:

pmdaDaemon.3.en	debian 10 / libpcp-pmda3-dev
pmdadaemon.3.en	debian 10 / libpcp-pmda3-dev
pmdaDaemon.3.en	debian 11 / libpcp-pmda3-dev
pmdaDaemon.3.en	debian 12 / libpcp-pmda3-dev