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Groups > muc.lists.netbsd.tech.userlevel > #11859
| From | David Holland <dholland-tech@netbsd.org> |
|---|---|
| Newsgroups | muc.lists.netbsd.tech.userlevel |
| Subject | Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result |
| Date | 2026-08-20 21:09 +0000 |
| Organization | Newsgate at muc.de e.V. |
| Message-ID | <aodtF4_1x9JxwKfn@netbsd.org> (permalink) |
| References | <> <rmi33w8eom9.fsf@s1.lexort.com> |
On Thu, Aug 20, 2026 at 12:35:42PM -0400, Greg Troxel wrote: > > > How would you store and configuration manage the ordering requirements > > > among barrier scripts? > > > > Just off the top of my head, you could: > > > > - hardwire the barrier sequence (admittedly not a great plan) > > - put it on the rcorder command line > > - put it all in a single non-executable file > > I can see those working -- but I don't see how that's an improvement, > weighing the benefit of dropping these tiny files and invoking them vs > the cost of adding additional mechanisms, absent benchmarks that show > the current situation hurts. Running a shell on the empty file is not free, even if it's not expensive. (AIUI, without the fast-and-loose setting, each one of these is run in at least a subshell if not a fresh exec.) Conversely, rcorder(8) is compiled code and a bit of extra logic there is by comparison free... plus there you're saving opening and reading a few files so you're still ahead. > After all, anyone truly concerned about performance would port systemd > to NetBSD and vibe-code optimizations. Right, obviously :-) -- David A. Holland dholland@netbsd.org -- Posted automagically by a mail2news gateway at muc.de e.V. Please direct questions, flames, donations, etc. to news-admin@muc.de
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Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-17 21:46 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Edgar Fuß <ef@math.uni-bonn.de> - 2026-08-18 11:07 +0200
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-18 06:07 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Greg Troxel <gdt@lexort.com> - 2026-08-18 06:41 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-18 06:44 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Mouse <mouse@Rodents-Montreal.ORG> - 2026-08-18 09:51 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-18 06:58 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result David Holland <dholland-tech@netbsd.org> - 2026-08-19 04:33 +0000
barrier scripts (was: Improving the performance of system boot by eliding unused rc.d scripts and caching the result) Edgar Fuß <ef@math.uni-bonn.de> - 2026-08-19 11:20 +0200
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Greg Troxel <gdt@lexort.com> - 2026-08-19 06:43 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-19 06:16 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result David Holland <dholland-tech@netbsd.org> - 2026-08-20 16:03 +0000
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Greg Troxel <gdt@lexort.com> - 2026-08-20 12:35 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-20 09:51 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result David Holland <dholland-tech@netbsd.org> - 2026-08-20 21:09 +0000
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result "Simon J. Gerraty" <sjg@crufty.net> - 2026-08-19 14:07 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Greg Troxel <gdt@lexort.com> - 2026-08-19 07:07 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-19 08:47 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Robert Elz <kre@munnari.OZ.AU> - 2026-08-20 10:43 +0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-19 23:27 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Robert Elz <kre@munnari.OZ.AU> - 2026-08-21 04:37 +0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Edgar Fuß <ef@math.uni-bonn.de> - 2026-08-20 10:12 +0200
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-20 06:40 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Valery Ushakov <uwe@stderr.spb.ru> - 2026-08-20 12:38 +0300
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Robert Elz <kre@munnari.OZ.AU> - 2026-08-21 02:17 +0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Martin Neitzel <neitzel@hackett.marshlabs.gaertner.de> - 2026-08-21 01:38 +0200
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Robert Elz <kre@munnari.OZ.AU> - 2026-08-19 02:07 +0700
"good" editors [was Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result] Mouse <mouse@Rodents-Montreal.ORG> - 2026-08-18 15:19 -0400
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Jason Thorpe <thorpej@me.com> - 2026-08-18 14:24 -0700
Re: Improving the performance of system boot by eliding unused rc.d scripts and caching the result Robert Elz <kre@munnari.OZ.AU> - 2026-08-19 08:08 +0700
shell quoting (was: Improving the performance of system boot by eliding unused rc.d scripts and caching the result) Edgar Fuß <ef@math.uni-bonn.de> - 2026-08-19 11:17 +0200
Re: shell quoting (was: Improving the performance of system boot by eliding unused rc.d scripts and caching the result) David Holland <dholland-tech@netbsd.org> - 2026-08-20 16:16 +0000
Re: shell quoting (was: Improving the performance of system boot by eliding unused rc.d scripts and caching the result) Ken Hornstein <kenh@pobox.com> - 2026-08-20 12:36 -0400
Re: shell quoting (was: Improving the performance of system boot by eliding unused rc.d scripts and caching the result) Robert Elz <kre@munnari.OZ.AU> - 2026-08-21 12:37 +0700
Re: shell quoting Jarle Greipsland <jarle.greipsland@norid.no> - 2026-09-09 08:36 +0200
Re: shell quoting Edgar Fuß <ef@math.uni-bonn.de> - 2026-09-09 10:28 +0200
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-09 18:42 +0700
Re: shell quoting Edgar Fuß <ef@math.uni-bonn.de> - 2026-09-09 14:42 +0200
Re: shell quoting kre@munnari.OZ.AU - 2026-09-09 20:03 +0700
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-09 20:21 +0700
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-09 18:36 +0700
Re: shell quoting Edgar Fuß <ef@math.uni-bonn.de> - 2026-09-09 17:28 +0200
Re: shell quoting Edgar Fuß <ef@math.uni-bonn.de> - 2026-09-09 17:31 +0200
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-10 08:12 +0700
Re: shell quoting Mouse <mouse@Rodents-Montreal.ORG> - 2026-09-09 21:38 -0400
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-10 10:10 +0700
Re: shell quoting Jarle Greipsland <jarle.greipsland@norid.no> - 2026-09-09 18:56 +0200
Re: shell quoting Robert Elz <kre@munnari.OZ.AU> - 2026-09-10 08:51 +0700
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