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Re: Virtual memory usage by nslcd

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Re: Virtual memory usage by nslcd

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

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.


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