[389-users] Increase in search time operation in 1.2.11 vs 1.2.5

[Bartek]

Hello
I have an use case where particular search operations on the same data in
1.2.5 and 1.2.11 differ significantly.
1.2.5 is on Centos 5.9 and 1.2.11 on Centos 5.11. I'm asking this as i'm in
the middle of upgrade process and I come across this performance issue.

After feeding both versions with data from the same text dump, particular
search operation takes 0.5s in 1.2.5 to complete whereas in 1.2.11 it takes
6s:

ldapsearch -D 'uid=root,ou=users,o=xxx' -x -b
'uid=someuser,dc=domain,dc=pl,o=xxx' -s subtree -w pass
'(objectClass=someObjectClass)'

There is a set of 40 acls at the dc=pl,o=xxx node and 9 more on
dc=domain,dc=pl,o=xxx. The acl allowing 'uid=root,ou=users,o=xxx' to access
everything is at o=xxx.

I did already manage to figure out that the more acis i remove the shorter
the search operation is. However even with those aci in place, search on
1.2.5 returns significantly faster.

I would like to ask if there are any factors that would make search
operations longer while jumping from 1.2.5 to 1.2.11?

-- 
Regards
Bartek
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