Man pages matching name pmdaopenlog in section 3:

pmdaOpenLog.3.en	debian 10 / libpcp-pmda3-dev
pmdaopenlog.3.en	debian 10 / libpcp-pmda3-dev
pmdaOpenLog.3.en	debian 11 / libpcp-pmda3-dev
pmdaOpenLog.3.en	debian 12 / libpcp-pmda3-dev