-----Original Message----- From: Quanah Gibson-Mount quanah@fast-mail.org Sent: Friday, June 28, 2024 3:30 PM To: Windl, Ulrich u.windl@ukr.de; openldap-technical <openldap- technical@openldap.org> Subject: [EXT] RE: RE: Re: FW: Accessing ppolicy attributes as non-admin in 2.4
--On Friday, June 28, 2024 7:41 AM +0000 "Windl, Ulrich" u.windl@ukr.de wrote:
[Windl, Ulrich] That "test" only compared sizes directly after loading the database, but it did not compare the sizes when the databases are "in use". For example, how do they behave when you change one attribute in 50% of
the
entries (just for example). What happens when you do that 10 times?
Like with statistics you can tune any test to show the results you want to see. So I'm not convinced that I am "factually incorrect" yet.
I did a write test too, MDB requires substantially fewer resource in that case as well:
https://wiki.zimbra.com/wiki/OpenLDAP_MDB_vs_HDB_performance
[Windl, Ulrich]
But even that page only mentions the size of the acessslog, not the size of the databases after the changes. And I'm unsure whether "replication speed", specifically when done over a network, says much about (local) database performance.
I will say that *early on* in the development of back-mdb/lmdb there were issues with the freelist that could cause explosive growth, but those were fixed years ago.
[Windl, Ulrich]
Maybe it's that "bad news travels fastest".
Kind regards, Ulrich
Regards, Quanah