Bug#727708: Bits from linux.conf.au
On 2014-01-13 13:15:07 +0000, Steven Chamberlain wrote:
> In the slides[0] 13 to 15, he summarises init systems something like:
> * SysV - simple, familiar and deterministic
Deterministic?
Well, the scripts may be started sequentially, but this doesn't mean
that the daemons will be and always in the same order. And they don't,
as shows in the following log:
[...]
Sat Dec 24 17:09:45 2011: Starting SpamAssassin Mail Filter Daemon: Starting Network connection manager: wicd.
Sat Dec 24 17:09:50 2011: Starting OpenBSD Secure Shell server: sshd.
Sat Dec 24 17:09:52 2011: spamd.
[...]
and still now (but less readable):
(1)
[...]
Thu Aug 1 10:24:51 2013: Starting SpamAssassin Mail Filter Daemon: [....] Starting Network connection manager: wicd^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
Thu Aug 1 10:24:59 2013: [....] Starting OpenBSD Secure Shell server: sshd^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
Thu Aug 1 10:25:08 2013: spamd.
Thu Aug 1 10:25:08 2013: [....] Starting Postfix Mail Transport Agent: postfix^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
[...]
(2)
[...]
Sun Aug 18 12:18:21 2013: Starting SpamAssassin Mail Filter Daemon: [....] Starting OpenBSD Secure Shell server: sshd^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
Sun Aug 18 12:18:26 2013: [....] Starting Network connection manager: wicd^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
Sun Aug 18 12:18:34 2013: spamd.
Sun Aug 18 12:18:34 2013: [....] Starting Postfix Mail Transport Agent: postfix^[[?25l^[[?1c^[7^[[1G[^[[32m ok ^[[39;49m^[8^[[?25h^[[?0c.
[...]
In (1):
spamd start
wicd start/OK
sshd start/OK
spamd OK
postfix start/OK
In (2):
spamd start
sshd start/OK
wicd start/OK
spamd OK
postfix start/OK
This isn't deterministic at all.
--
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <http://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
Reply to: