Re: install/56582: port-atari freeze on installation when extracting base.tgz

[Joerg Sonnenberger <joerg%bec.de@localhost>]

The following reply was made to PR port-atari/56582; it has been noted by GNATS.

From: Joerg Sonnenberger <joerg%bec.de@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-atari-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
	netbsd-bugs%netbsd.org@localhost, dross%pobox.com@localhost
Subject: Re: install/56582: port-atari freeze on installation when extracting
 base.tgz
Date: Fri, 31 Dec 2021 00:35:43 +0100

 On Thu, Dec 30, 2021 at 11:10:02PM +0000, David Brownlee wrote:
 > The following reply was made to PR port-atari/56582; it has been noted by GNATS.
 > 
 > From: David Brownlee <abs%absd.org@localhost>
 > To: Jason Thorpe <thorpej%me.com@localhost>
 > Cc: gnats-bugs%netbsd.org@localhost, port-atari-maintainer%netbsd.org@localhost, 
 > 	gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost, dross%pobox.com@localhost
 > Subject: Re: install/56582: port-atari freeze on installation when extracting base.tgz
 > Date: Thu, 30 Dec 2021 23:05:31 +0000
 > 
 >  On Thu, 30 Dec 2021 at 14:49, Jason Thorpe <thorpej%me.com@localhost> wrote:
 >  >
 >  > > On Dec 30, 2021, at 12:10 AM, Michael van Elst <mlelstv%serpens.de@localhost> wrote:
 >  >
 >  > > mlockall() returns ENOMEM when the system- or per-process-limit is exceeded,
 >  > > you can ignore it. Worst thing is that ntpd gets swapped out and cannot
 >  > > sync time anymore.
 >  > >
 >  > > ntpd uses about 7MB RAM (about 3MB shared). You probably don't want
 >  > > to have this locked in memory on a small machine. Adding
 >  > >
 >  > > rlimit memlock -1
 >  > >
 >  > > to ntp.conf should prevent it from trying.
 >  >
 >  > I wonder if we should add a heuristic in ntpd to auto-tune for this.
 >  
 >  I'd be loudly in favour of this - people should be able to set things
 >  explicitly, but we really should be defaulting more things based on
 >  current memory and or relative compute level.
 
 Speaking as the devil's adocate: why should I care about machines with
 16MB as ntp author in 2021? Getting swapped out is a very real risk even
 on larger machines and ntpd by nature is timing sensitive. So what
 justifies the added complexity of such an option or tuning heuristic?
 
 Joerg