[ejabberd] Performances issues with ejabberd+LDAP+PostgreSQL

Evgeny xramtsov at gmail.com
Mon May 13 13:42:39 MSK 2019

On Mon, May 13, 2019 at 12:40 PM, Holger Weiß 
<holger at zedat.fu-berlin.de> wrote:
> 250+ users sounds like a very harmless number, you shouldn't usually
> need much CPU power to handle those.  Even with (way) more users, the
> available RAM and the I/O performance will be more interesting.  As 
> both
> PostgreSQL (in your previous log snippets) and Mnesia (in your new 
> logs)
> are reported to be overloaded, I'd assume some issue with your I/O
> performance and/or something triggering heavy load on the database.

I think the main problem is mod_shared_roster and 
mod_shared_roster_ldap: both have very poor performance even with small 
user numbers.

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