From: Alvaro Herrera <alvherre@2ndquadrant.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Thomas Munro <thomas.munro@gmail.com>
Cc: Rémi Zara <remi_zara@mac.com>
Cc: Michael Paquier <michael@paquier.xyz>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: pgsql: Add kqueue(2) support to the WaitEventSet API.
Date: Mon, 24 Feb 2020 17:55:09 -0300
Message-ID: <20200224205509.GA5686@alvherre.pgsql> (raw)
In-Reply-To: <18625.1582576221@sss.pgh.pa.us>
On 2020-Feb-24, Tom Lane wrote:
> I wrote:
> > I thought about platform-specific messages, but it's not clear to me
> > whether our translation infrastructure will find messages that are
> > inside #ifdefs ... anyone know?
>
> Oh, but of course it does. So let's do
>
> errdetail("There are too many open files on the local server."),
> #ifndef WIN32
> errhint("Raise the server's max_files_per_process and/or \"ulimit -n\" limits.")
> #else
> errhint("Raise the server's max_files_per_process setting.")
> #endif
WFM.
> I don't think there's much point in telling Windows users about
> _setmaxstdio() here.
Yeah, telling users to _setmaxstdio() themselves is useless, because
they can't do it; that's something *we* should do. I think the 512
limit is a bit low; why not increase that a little bit? Maybe just to
the Linux default of 1024.
Then again, that would be akin to setrlimit() on Linux. Maybe we can
consider that a separate GUC, in a separate patch, with a
platform-specific default value that just corresponds to the OS's
default, and the user can set to whatever suits them; then we call
either _setmaxstdio() or setrlimit().
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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To: pgsql-committers@postgresql.org
Cc: alvherre@2ndquadrant.com, tgl@sss.pgh.pa.us, thomas.munro@gmail.com, remi_zara@mac.com, michael@paquier.xyz, pgsql-hackers@lists.postgresql.org
Subject: Re: pgsql: Add kqueue(2) support to the WaitEventSet API.
In-Reply-To: <20200224205509.GA5686@alvherre.pgsql>
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