openldap server using a lot memory

Hi Forum,

I'm using Alpine linux as base image for docker containers. So I create an alpine based openldap server container. Everything looks fine. However, slapd process used a lot memory.

The original openldap server on my centos 7 use about 5M during startup. slapd in alpine container use over 250M. If I set "-m 75m" on container for example, slapd killed because of oom.

So, I tried to install openldap and launch it without any modification, it still need a lot memory.

What could be the problem?

Thanks

Noodle