Also, if you can run tail -f /var/log/koha/<instancename>/plack-error.log when the error occurs, that should give us a better idea of what's timing out.

On Mon, Oct 3, 2016 at 7:19 AM, Jonathan Druart <jonathan.druart@bugs.koha-community.org> wrote:
Hi Paul,

What's the frequency of your plack errors (1/day, 1/hour, 1/min)?
What configuration do you use?
Nothing else in the logs?

Cheers,
Jonathan

2016-10-03 12:14 GMT+02:00 Paul Poulain <paul.poulain@biblibre.com>:
> Hello koha-devel,
>
> Is there someone using Apache, Plack, on a high load server (ie: for a large
> library) ? Which configuration are you using (OS version, how is Koha
> installed -package or not-, any tuning in the config files ?)
>
> Do you face any problem ?
>
> We (BibLibre) face many cases where we get failures ("internal server
> error". Seems there's something like Apache not being able to wait long
> enough for Plack to answer).
>
> --
> Paul Poulain, Associé-gérant / co-owner
> BibLibre, Services en logiciels libres pour les bibliothèques
> BibLibre, Open Source software and services for libraries
>
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