[keycloak-user] Major Memory Leak/Consumption When Creating Many Users

[Stian Thorgersen]

Keycloak by default caches users in-memory, by default it will keep up to
10000 entries cached. You can verify that there's no leak by disabling the
user cache provider. See
http://keycloak.github.io/docs/userguide/keycloak-server/html/server_cache.html#d4e3187

If you're planning on having millions of users I suggest you increase the
allocated memory for the JVM (512MB which it seems you have is not
sufficient).

On 22 June 2016 at 00:29, Chris Hairfield <chairfield at gmail.com> wrote:

> Hello,
>
> When testing Keycloak 1.9.8 by ingesting a few million users, we find that
> Keycloak leaks memory until it is rendered unresponsive (see graph).
> Increasing JVM memory only increases the time it takes to encounter this
> issue.
>
> We have put together a test project here
> <https://github.com/anaerobic/keycloak-leakage> and opened an issue here
> <https://issues.jboss.org/browse/KEYCLOAK-3146> as we continue to
> investigate. As we are relying on Keycloak as a central infrastructural
> component, any help would be greatly appreciated.
>
> We'll update with more information as we find it.
>
> Thanks,
> Chris
>
> [image: mem-cpu.png]
>
> _______________________________________________
> keycloak-user mailing list
> keycloak-user at lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/keycloak-user
>
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