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Re: Default threads value in OpenLDAP



On Wednesday 18 April 2007, Quanah Gibson-Mount wrote:
> --On Wednesday, April 18, 2007 11:49 PM +0200 RaphaÃl Ouazana-Sustowski
>
> <raphael.ouazana@linagora.com> wrote:
> > Le Mer 18 avril 2007 23:17, Quanah Gibson-Mount a Ãcrit :
> >> I reached the same conclusions on my old Solaris V120's, with RW tests
> >> too.
> >> ;)  If we get that build farm proposal, that might be a good opportunity
> >> to
> >> do some testing of small DB's on a variety of platforms, I suppose.
> >> However, I'm guessing the majority of OpenLDAP users fall into the Linux
> >> and Solaris categories.
> >
> > What sort of tests are you doing ?
>
> A series of tests where I have mixed read/write ratios.  In particular:
>
> 30% read, 70% write
> 50% read, 50% write
> 70% read, 30% write
>
> with multiple increasing numbers of threads.

And, how many databases ?

I assume the recommendation is based on one database? In my deployment, I have 
3 relatively large databases (~400 000, ~500 000, ~800 000), so since better 
performance at the reduced thread number is probably due to reduced database 
contention, 24 threads may be more appropriate for me?

Or, should the number of threads be configurable at the database level ?

Regards,
Buchan

-- 
Buchan Milne
ISP Systems Specialist - Monitoring/Authentication Team Leader
B.Eng,RHCE(803004789010797),LPIC-2(LPI000074592)

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