How to simulate slow queries?

[Andrey Brindeyev <andrey.brindeew@gmail.com>]

Hello!

I'm trying to debug a specific issue that is related to slow queries, so I need a way how to simulate slow LDAP server responses.

It will be optimal if I can set a specific number of seconds per query shape, but a general (configured) delay is fine too.

I've already tried the retcode overlay, and I think it only simulates the slow bind scenarios and not the slow query responses.

Here's an excerpt from my slapd.conf:

overlay         retcode
retcode-parent  "ou=Users,dc=acme,dc=qa"
#retcode-item    "uid=mdb"                        0x00
retcode-item    "uid=mdb"                        0x00    sleeptime=4
retcode-item    "cn=user1"                       0x00
retcode-item    "cn=user2"                       0x00
retcode-item    "cn=user3"                       0x00
retcode-item    "cn=user4"                       0x00
retcode-item    "cn=user5"                       0x00

If there's no way this can be configured using existing options in OpenLDAP, I appreciate advice wherein the source code I need to insert the sleep construct. Ideally, it should work with the retcode overlay, so that I can test the slow bind scenarios and slow query responses at the same time.

Thanks,
Andrey.