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Re: (ITS#6660) paged result searches fail to deallocate memory until slapd shutdown
- To: openldap-its@OpenLDAP.org
- Subject: Re: (ITS#6660) paged result searches fail to deallocate memory until slapd shutdown
- From: email@example.com
- Date: Wed, 29 Sep 2010 00:38:58 GMT
- Auto-submitted: auto-generated (OpenLDAP-ITS)
--On Tuesday, September 28, 2010 11:10 PM +0000 firstname.lastname@example.org wrote:
> --On Tuesday, September 28, 2010 8:04 PM +0200 email@example.com
>> Each paged results control request mallocs a small amount of memory on
>> the slab which is not explicitly freed. It should not be an issue,
>> since it occurs so early in the life of an operation that the slab
>> should never be exhausted. In any case, I've committed a fix. Can you
>> test and report, please? Thanks, p.
> Hi Pierangelo,
> I'm testing a build with your patch now. In the meantime, you can see a
> callgraph generated from tcmalloc's heap profiling tool at
> <http://www.stanford.edu/~quanah/pprof.pdf>. I baselined the graph to
> start after the first initial searches have been to load the cache, etc.
> So you can see that slapd grew by 14.3GB once I started doing the paged
> results searches.
It appears to be a problem with the entry cache, which is set to 25,000:
Principal Software Engineer
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