openldap unstable on freebsd

[alexs at ulgsm.ru]

* Oliver Brandmueller <ob at e-Gitt.NET> [2009-10-27 09:56:48 +0100]:

> Hi,
> 
> On Tue, Oct 27, 2009 at 11:25:16AM +0300, alexs at ulgsm.ru wrote:
> > Last 2 years (maybe when began using bdb backend), we get slapd crash on
> > read load. 
> > System on low load work with monit monitoring and fails 1-3 in month.
> > When load up crashes frequency up too.
> > 
> > Tuning helped but not much.
> > 
> > load about 20-30 queryes/sec in peak.
> > and crashes every hour.
> > 
> > Problem watched on Freebsd7,7.1,7.2 i386, amd64 and openldap2.3,2.4
> > (bdb,hdb backends) in any combinations.
> > 
> > I tested openldap 2.4 on debian lenny, its work under my load without
> > tuning (once was crashed whole linux :), but not slapd).
> > 
> > Mybe some freebsd tuning needed?
> 
> We have slapd running on several servers with read loads of between 50 
> and 200 requests per second and it runs rock stable.
> 
> What comes tomind, did your server crash at some point? Have you tried 
> to either do a db_recover on the database files (while slapd is not 
> running of course) or slapcat/slapadd to rebuild the BDB from scratch? I 
> get the feeling your BDB is somehow damaged.

I reinstall opneldap, remove all tunung, make slapadd < backup.ldif and
get about 50 failures at the night. :(



> 
> - Oliver
> 
> -- 
> | Oliver Brandmueller          http://sysadm.in/         ob at sysadm.in |
> |                        Ich bin das Internet. Sowahr ich Gott helfe. |
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-- 
Email: alexs at ulgsm.ru
Email/Jabber: alexs at ulgsm.ru