Mark.Cairney@ed.ac.uk wrote:

Hi Howard,

Hi Mark, thanks for the feedback.

For completeness' sake, the tool I used to generate our test dataset is in http://www.openldap.org/its/index.cgi?findid=8875#followup14

Just to confirm that I'm seeing significantly better results with the 2.4.48 RC release for querying OUs full of aliases and de-referencing them:

Comparing 2 servers with the same data on them (one 2.4.47, the other 2.4.48 with the new patch) and just after restarting slapd yield the following:

2.4.48: 0.52s user 0.09s system 46% cpu 1.315 total (with a small spike in CPU)

2.4.47: 0.46s user 0.94s system 0% cpu 3:39.89 total (with the CPU spiking to 100% on the server for the duration of the query)

This is for an OU with 11932 entries in it (all aliasedObjects)

On 15/07/2019 17:07, Howard Chu wrote:

...

Fyi, we recently revisited this issue and are seeing improved results with commit e90e8c7d3c12d897bb0584ba04dc519d4f23acf9 in master.