Re: How does it handle 10k users and 3k desktops.

[Gustavo Rios <rios.gustavo@gmail.com>]

Sorry,

but could not find Quanah Gibson's page at stanford.

Would you mind posting the url?

On 8/6/05, Ignacio Coupeau <icoupeau@unav.es> wrote:
> Gustavo Rios wrote:
> > Dear folks,
> >
> > i am planing using openldap to server account for my users (unix,
> > email, etc). It will be authenticating by means of kerberos V (SASL) I
> > wonder about performance concerns.
> >
> > My initial ideia was to use BDB, but on openbsd mailing (my OS is
> > OBSD) i heard someone telling me he/she did not trust BDB and
> > preferred some variant of gdbm/ndbm.
> 
> a couple of years ago, perhaps..., BDB 4.2.52p2 runs very fine with
> several hundred of thousand accounts and thousand machines (samba and mail).
> 
> And, of course, the BDB runs very fine only if it is well tunned (for
> example):
> set_cachesize
> set_lg_regionmax
> set_lg_bsize
> set_lg_dir
> 
> you can found some useful examples in the Quanah Gibson's pages at
> Stanford and a long article about index size calculations (and several
> others) in the faq-o-matic
> 
> > So my question is how reliable you judge openldap + bdb?\
> > I know this may seem a little hard to answer, but i am planning a Dell
> > PowerEdge 750 with SCSI RAID 1, 512 MB RAM and obsd 3.7. It will be
> > used for handling about 10K users and 3k desktops for qmail, linux and
> > samba.
> >
> > It my configuration realistic?
> 
> Strongly recommend you 2 servers (a master and a slave, also for HA),
> with a bit more of RAM (1-2GB perhaps). You need a lot of indexes and a
> lot of memory makes the ldap flight.
> 
> The transaction logs may be in a different disk for I/O performance.
> 
> Ignacio
> 
> --
> ____________________________________________________
> Ignacio Coupeau, Ph.D.     icoupeau@unav.es
> CTI, Director              icoupeau@alumni.unav.es
> University of Navarra      icoupeau@ieee.org
> Pamplona, SPAIN            http://www.unav.es/cti/
>