problem of memory consumption in load with shibboleth SP 3 v3.2.0

[Alban VEYRET]

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Hello Scott

Thanks for your answer.

We will try to see the threads involved in our case.

Regards,

Alban

-----Original Message-----
From: Cantor, Scott <cantor.2 at osu.edu> 
Sent: Thursday, 25 February, 2021 20:56
To: Shib Users <users at shibboleth.net>
Cc: Alban VEYRET <alban.veyret at amadeus.com>
Subject: Re: problem of memory consumption in load with shibboleth SP 3 v3.2.0

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On 2/25/21, 6:28 AM, "users on behalf of Alban VEYRET via users" <users-bounces at shibboleth.net on behalf of users at shibboleth.net> wrote:

>    -We are loading the module mpm_event_module modules/mod_mpm_event.so
>    (LoadModule mpm_event_module modules/mod_mpm_event.so in our apache mpm-conf)
>    If my understanding is correct, it means the version is not prefork.

I have more experience with worker than event, but ultimately it's just a question of determining the thread count inside shibd to determine if that factor is actually involved at all. I don't recall the command offhand that can show that but I believe there is one.

>    We are running out of ideas and would like to know if you have any 
> clues that could help us to solve our memory issue with a heavy load.

Not for free (and ultimately probably wouldn't be much help officially but I'd at least try).

Other than using large metadata files, I don't know of any other factor that leads to that sort of growth if the thread count stays reasonable.

-- Scott