Re: Virtual memory usage by nslcd

[Deepak Kodihalli <dkodihal [at] linux.vnet.ibm.com>]

On 03/11/18 6:17 PM, Arthur de Jong wrote:
> On Fri, 2018-11-02 at 16:20 +0530, Deepak Kodihalli wrote:
> > I have plans of using nslcd on a Baseboard management controller
> > with about 128MB RAM. If nslcd suitable for systems with such small
> > RAMs?
>
> The memory use of nslcd should be pretty constant. The memory use
> mostly consists of:
> - communication buffers
> - LDAP connection structures
> - buffers for converting results and queries
>
> I haven't looked into memory profiling of nslcd in a long time and I'm
> unsure of the memory usage of dependent libraries (OpenLDAP and an SSL
> library mostly).
>
> > I've noticed that the steady VSZ usage by nslcd is about 47-48 MB.
> > Does that sound right? Are there build-time/run-time config options
> > to cut down on this?
>
> The runtime memory use can probably be decreased by reducing the number
> of threads. By default 5 threads are started. Each thread has its own
> LDAP connection, buffers for I/O and stack (the parsing buffers are
> mostly located on the stack).

Thanks, reducing the number of threads did help.

Regards,
Deepak

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