LDAP performance issues

[Craig White]

That all depends upon how you search (base/one/sub)

If you are hierarchical in plan but sub search all the hierarchies,
there is nothing gained from the hierarchy.

Craig

On Tue, 2006-07-04 at 11:53 -0700, George Toft wrote:
> Schema is a big factor as well.  Flat schemas with lots of members per 
> ou are much worse than hierarchical schemas with few members per ou.
> 
> George Toft, CISSP, MSIS
> My IT Department
> www.myITaz.com
> 480-544-1067
> 
> Confidential data protection experts for the financial industry.
> 
> 
> Craig White wrote:
> > On Sun, 2006-07-02 at 23:46 -0700, Nathan England wrote:
> > 
> >>I have only setup a handfull of machines to authenticate against my ldap box, 
> >>but I have already noticed performance issues. What is the typical number of 
> >>machines you can have authenticating against an LDAP box? I haven't really 
> >>seen any statistics...
> > 
> > ----
> > in that LDAP is optimized as read often, write little, I would expect
> > that you shouldn't see any performance drop off for the first few
> > hundred computers accessing it and nothing of a significant performance
> > hit for the first few thousand systems.
> > 
> > You can tune your cache size to keep the entire thing in RAM (assuming
> > that your DSA is probably not very large).
> > 
> > Generally, if you are seeing performance slowdowns though, these are the
> > things you should be looking at:
> > - searching on unindexed fields (dollars to doughnuts this is your
> > problem)
> > - rampant log files (adding to large logs can really slow system down) -
> > what is loglevel? where is it logging? How big is the file you are
> > logging to?
> > - large ssl key ciphers
> > - cache/RAM - what is cachesize value in slapd.conf?
> > 
> > Craig
> > 
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