On 04/19/2012 10:50 AM, Russell Beall wrote:
Thanks for the tips. I scanned the dse.ldif for those plugins and I
found definitions for them all, but they all have
nsslapd-pluginEnabled: off.
There is something special about the uniquemember attribute that
requires additional processing different from other attributes...
Ldapmodify of other attributes runs pretty quick.
Is uniquemember the only attribute using large numbers of multiple
values in ldapmodify operations?
Regards,
Russ.
On Apr 19, 2012, at 2:20 AM, Andrey Ivanov wrote:
Hi Russel,
Le 18 avril 2012 23:06, Russell Beall <be...@usc.edu
<mailto:be...@usc.edu>> a écrit :
On Apr 18, 2012, at 11:15 AM, Rich Megginson wrote:
Yeah, this particular operation has not been optimized. I
believe SunDS added explicit optimizations for this particular case.
It is becoming painfully apparent as I write more detailed tests.
389 takes time to add or delete uniquemember values
proportionate to the number of values being operated on and is
using about twice as much time to delete as it does to add. Sun
DS appears to have perhaps an almost O(1) algorithm in play on
both adding and deleting values.
Is there perhaps some kind of referential integrity setting that
is being used and forcing some kind of lookup of each value, one
that we could perhaps turn off? We wouldn't need such a check
because our metadirectory process handles the
integrity/consistency checking already.
There is memberOf plugin that maintains the memberOf attribute for
groups. I don't know whether it is activated by default or not. You
could try to disable it. There is also referential integrity plugin,
attribute uniqueness plugin, maybe USN plugin or custom indexes that
could consume a lot of CPU. Make sure you've disabled them if you
don't need them.
@+
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