Re: Estimating HugePages Requirements?

From: Nathan Bossart <nathandbossart(at)gmail(dot)com>
To: Magnus Hagander <magnus(at)hagander(dot)net>
Cc: "Bossart, Nathan" <bossartn(at)amazon(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, Justin Pryzby <pryzby(at)telsasoft(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, Mark Dilger <mark(dot)dilger(at)enterprisedb(dot)com>, Don Seiler <don(at)seiler(dot)us>, "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Estimating HugePages Requirements?
Date: 2022-03-14 17:34:17
Message-ID: 20220314173417.GA1020555@nathanxps13
Views: Raw Message | Whole Thread | Download mbox | Resend email
Lists: pgsql-admin pgsql-hackers

On Mon, Mar 14, 2022 at 04:26:43PM +0100, Magnus Hagander wrote:
> Nothing fixing this ended up actually getting committed, right? That
> is, we still get the extra log output?


> And in fact, the command documented on
> doesn't
> actually produce the output that the docs show, it also shows the log
> line, in the default config? If we can't fix the extra logging we
> should at least have our docs represent reality -- maybe by adding a
> "2>/dev/null" entry? But it'd be better to have it not output that log
> in the first place...

I attached a patch to adjust the documentation for now. This apparently
crossed my mind earlier [0], but I didn't follow through with it for some

> (Of course what I'd really want is to be able to run it on a cluster
> that's running, but that was discussed downthread so I'm not bringing
> that one up for changes now)

I think it is worth revisiting the extra logging and the ability to view
runtime-computed GUCs on a running server. Should this be an open item for
v15, or do you think it's alright to leave it for the v16 development


Nathan Bossart
Amazon Web Services:

Attachment Content-Type Size
v1-0001-send-stderr-to-dev-null-in-Linux-Huge-Pages-docum.patch text/x-diff 945 bytes

In response to


Browse pgsql-admin by date

  From Date Subject
Next Message Michael Paquier 2022-03-15 02:41:29 Re: Estimating HugePages Requirements?
Previous Message Magnus Hagander 2022-03-14 15:26:43 Re: Estimating HugePages Requirements?

Browse pgsql-hackers by date

  From Date Subject
Next Message Tom Lane 2022-03-14 17:45:00 Re: obsolete reference to a SubPlan field
Previous Message Robert Haas 2022-03-14 17:31:15 Re: obsolete reference to a SubPlan field