Hello,
just a note: if you use that large dataset, especially if the purpose is for routing decisions/prefix matching, you probably will get a better lookup performance with modules that uses
another data structure more optimized for this case. Two examples for these modules are mtree and carrierroute. A hash table can degenerate into linear list(s), if the data is formed in a specific way.
Cheers,
Henning
From: sr-users <sr-users-bounces@lists.kamailio.org>
On Behalf Of Brooks Bridges
Sent: Thursday, April 7, 2022 5:17 PM
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Htable reload
I have several htables with various amounts of data in them ranging from a couple hundred entries to a couple million entries and while the reload itself does take a bit, the vast majority of
the delay is the database -> Kamailio loading time. Once the data is in there, the pointer updates haven’t been anything I’ve noticed. I’m sure it takes some measurable amount of time, but in my case it’s so imperceptible that it’s irrelevant.
Brooks Bridges
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From: sr-users <sr-users-bounces@lists.kamailio.org>
On Behalf Of David Villasmil
Sent: Thursday, April 7, 2022 08:09
To: Kamailio (SER) - Users Mailing List <sr-users@lists.kamailio.org>
Subject: Re: [SR-Users] Htable reload
Thanks Alex, I'm wondering how this will affect performance if there are many thousands or even millions of records...
On Thu, Apr 7, 2022 at 4:03 PM Alex Balashov <abalashov@evaristesys.com> wrote:
No, the reload actually creates a temporary new hash table (in heap), loads the entries from the DB into it, then iterates through the buckets of that temporary table and replaces the entries (pointers) in the existing table with the entries from the temporary table, then frees the buckets in the temporary table.
> On Apr 7, 2022, at 4:43 AM, David Villasmil <david.villasmil.work@gmail.com> wrote:
>
> Hello all,
>
> I’ve been trying to figure out how htable reloads happen. Does it replaces the existing one or creates a new one, populates it from the db and then renames it? The latter would be (I think) ideal, even if it uses more resources.
>
> Thanks!
>
> David
> --
> Regards,
>
> David Villasmil
> email: david.villasmil.work@gmail.com
> phone: +34669448337
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