Re: Out of file-descriptors message

Geoffrey wrote:
> Alvaro Herrera wrote:
> >John Allgood wrote:
> >>Hey Tom
> >>
> >> I assume that if it is the kernel running out of descriptors that I
> >>would get the messages in dmesg. This message only appears in the log
> >>file for that database.
> >
> >Yeah, the point is that you have the max_files_per_process setting
> >higher than what the kernel likes. So decrease it, and Postgres will
> >adjust itself to use less file descriptors by closing and reopening
> >files as needed.
>
> I work with the original poster and wanted to make sure the problem here
> is clear.

Yes, that was understood from the beginning.

> The 'out of file descriptors' message is coming from
> Postgresql, not the kernel. Thus, it doesn't make sense to me that the
> max_files_per_process setting is too high. I would think we need to
> increase it so that Postgresql will stop generating these errors.

No, you need to lower it so that Postgres doesn't _try_ to use as many
file descriptors. Read this again:

> > So decrease it, and Postgres will
> >adjust itself to use less file descriptors by closing and reopening
> >files as needed.

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support