RE: what is the most stable platform to run openldap on?

["Howard Chu" <hyc@highlandsun.com>]

BDB 4.1.25 is known to hang on multiprocessor Linux systems. See ITS#2812 for
a workaround. If you really want a rock-stable system no matter what, go back
to a uniprocessor machine.

By the way, BDB 4.2.51 should be out in a couple days, with fixes that make
it compatible with OpenLDAP 2.1. It may be worth trying that as well.

  -- Howard Chu
  Chief Architect, Symas Corp.       Director, Highland Sun
  http://www.symas.com               http://highlandsun.com/hyc
  Symas: Premier OpenSource Development and Support

> -----Original Message-----
> From: owner-openldap-software@OpenLDAP.org
> [mailto:owner-openldap-software@OpenLDAP.org]On Behalf Of james liang

> Hi,
>
> What is the most stable platform to run openldap on?

Maybe a concrete cinder block?

> I am
> having a lot of stability issue with my openldap setup.  I
> thought I do a survey of what other people's do to get a rock
> solid openldap setup.  let me start off with what i have:
>
> hardware:
> brand: dell
> cpu: dual processor xeon 2.4ghz
> ram: 2 gig
> hard disk: 70 gig raid1
>
> software:
> os: red hat 9 (linux 2.4.20-8)
> file system: ext2 (tried ext3 before)
> openldap: 2.1.22
> berkeleydb: 4.1.25
>
> DB_CONFIG:
> set_cachesize    0 208435456 0
> set_lg_max      209715200
> set_lg_bsize    52428800
> set_flags       DB_TXN_NOSYNC
>
> performance target:
> entries - 2 million
> each entry - 4K byte
> queries per second - 30
> updates per second - 2
> unique entries queried in an hour - 60,000
> total disk usage: 13 gig
>
> I have not been able to get the system to run rock stable.
> Every week or so the system would hang.  What combination of
> hardware and software that you guys have found to work well?
> Please note that performance is not an issue.  In fact I
> would be happy to trade off some performance for more stability.
>
> -thanks
> James