[389-users] Re: 389 scalability

Thanks for the info William and Thierry, this all makes sense.

We'll start testing in the coming weeks and see how it goes.

-morgan


> On May 19, 2022, at 03:25, Thierry Bordaz <tbordaz@redhat.com> wrote:
>
>
> On 5/19/22 1:51 AM, William Brown wrote:
>>
>>> On 19 May 2022, at 00:48, Morgan Jones <morgan@morganjones.org> wrote:
>>>
>>> Hello Everyone,
>>>
>>> We are merging our student directory (about 200,000 entries) into our existing employee directory (about 25,000 entries).
>>>
>>> They're a pair of multi-master replicas on virtual hardware that can easily be expanded if needed though hardware performance hasn't been an issue.
>>>
>>> Does this justify creating separate database for students? Aside from basic tuning are here any big pitfalls we should look out for?
>> I think extra databases creates more administration overhead than benefit. The benefit to extra databases is "improved write performance" generally speaking. But the trade is subtree queries are more complex to eval for the server.
>>
>> It's far easier for you the admin, and also support staff if you keep it as a single db. We have done huge amounts to improve parallel reads in recent years, so you should see large gains when you change from 1.3 to 1.4 or 2.0 :)
>>
>>
> I fully agree with William points. Just a comment if you decide to merge the students entries into the employee directory. Either you will have to ADD 200K students entries into your existing directory and it will take several hours. Either you will use import (e.g. merge employee/students ldifs and reimport), that will require a reinit of the topology. The second option would be the fastest as import + reinit of a db with 225K entries should be fast.
>>
>>
>>> We're still on CentOS 7 for the time being:
>>> [root@prdds21 morgan]# rpm -qa|grep 389
>>> 389-admin-1.1.46-4.el7.x86_64
>>> 389-console-1.1.19-6.el7.noarch
>>> 389-dsgw-1.1.11-5.el7.x86_64
>>> 389-admin-console-1.1.12-1.el7.noarch
>>> 389-ds-1.2.2-6.el7.noarch
>>> 389-ds-base-libs-1.3.10.2-13.el7_9.x86_64
>>> 389-ds-base-1.3.10.2-13.el7_9.x86_64
>>> 389-adminutil-1.1.22-2.el7.x86_64
>>> 389-admin-console-doc-1.1.12-1.el7.noarch
>>> 389-ds-console-doc-1.2.16-1.el7.noarch
>>> 389-ds-console-1.2.16-1.el7.noarch
>>> [root@prdds21 morgan]#
>>>
>>> thank you,
>>>
>>> -morgan
>>>
>>>
>>>
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>> --
>> Sincerely,
>>
>> William Brown
>>
>> Senior Software Engineer,
>> Identity and Access Management
>> SUSE Labs, Australia
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