Comment 4 for bug 823048

I also noticed the problem in my contrib trying to sync a Mahara institution users accounts with a LDAP server.
https://github.com/patrickpollet/mahara_ldap_sync

The call to create_user is indeed consuming a big chunk of memory that is not returned to the pool and the process dies with ~1500 new users when allocating 256Mb to PHP.

Something must be wrong somewhere in the user creation , that does indeed a lot of work and memory allocation

Cheers.