Re: (ITS#5860) slapd memeory leak under openldap 2.4

[quanah@zimbra.com]

--On Wednesday, January 21, 2009 12:23 PM -0800 Rodrigo Costa 
<rlvcosta@yahoo.com> wrote:

> Quanah,
>
> My initial attempt was using openldap2.4.11 since this is the stable
> version. At this version Berkeley DB 4.7 isn't supported and then I used
> the BDB 4.6 with all patches.

I hardly consider 2.4.11 stable, regardless of what the tag is. I would 
advise trying something more current (such as 2.4.13).  And with BDB 4.7 + 
patches.

> At this configuration, having the DB_CONFIG setup for 50MB, and even
> having the idlcache and cache sizes defined I continue to see the memory
> being allocated and never released by slapd.

What about dncachesize as well?

> 2.3.27-8.el5_2.4 where the CentOS5.4 uses a built-in backend library for
> BDB4.4.

If you are looking for stability, I would hardly go with the crappy release 
CentOS ships.  The final 2.3 release was 2.3.43.  Use it instead if you 
want to use 2.3.

Also, are you on a 32 or 64-bit system?  I certainly have no problems going 
over 3GB on my 64-bit systems.

For example:
[zimbra@ldap openldap-data]$ du -c -h *.bdb
1.1G    cn.bdb
564M    displayName.bdb
702M    dn2id.bdb
158M    entryCSN.bdb
122M    entryUUID.bdb
335M    givenName.bdb
6.5G    id2entry.bdb
1.1G    mail.bdb
5.5M    objectClass.bdb
855M    sn.bdb
121M    uid.bdb
8.0K    zimbraDomainName.bdb
122M    zimbraId.bdb
20K     zimbraMailAlias.bdb
1.1G    zimbraMailDeliveryAddress.bdb
2.1M    zimbraMailForwardingAddress.bdb
3.1M    zimbraMailTransport.bdb
8.0K    zimbraVirtualHostname.bdb
8.0K    zimbraVirtualIPAddress.bdb
13G     total


DB is 13GB in size.

[zimbra@ldap openldap-data]$ cat DB_CONFIG
set_cachesize 8 0 2
set_lg_regionmax 262144
set_lg_bsize 2097152
set_lk_max_locks 1500
set_flags DB_LOG_AUTOREMOVE
set_lg_dir /var/log/zimbra-ldap-journals

Process size:

 8447 zimbra    17   0  9.9g 8.9g 8.1g S   34 57.5  39:20.57 slapd


Using OpenLDAP 2.3.42.


--Quanah



--

Quanah Gibson-Mount
Principal Software Engineer
Zimbra, Inc
--------------------
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