quanah@zimbra.com wrote:

--On August 26, 2010 3:44:02 AM +0000 masarati@aero.polimi.it wrote:

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Full_Name: Pierangelo Masarati Version: HEAD/re24 OS: irrelevant URL: ftp://ftp.openldap.org/incoming/ Submission from: (NULL) (129.72.175.5) Submitted by: ando

REP_CTRLS_MUSTBEFREED is only honored by send_ldap_response(); when response controls are attached to slap_send_search_entry() it is not honored. This does not surface because controls must be malloc'ed on the slab; however, it clearly appears when built with SLAP_NO_SL_MALLOC.

Interesting -- I'm seeing an issue where I can get slapd to consume all available memory on the system by using paged results. It takes a while to do so (depending on how much memory is available), but it's 100% repeatable. The more mixes of paged and non paged results there are with large result sets, the more quickly it happens. However, I do not build with SLAP_NO_SL_MALLOC (or at least, not intentionally ;) ).

If these two behaviors are related, that says to me that we should just go the rest of the way with the slab allocator and allocate additional slabs when the current one is exhausted. The purpose of the slab allocator was two-fold - to provide thread-local memory that needs no locking, and also to provide local memory that needs no housekeeping/explicit frees.