Re: runsvdir polling

From: <39066dd5_at_gmail.com>
Date: Sat, 14 Jan 2017 18:54:05 -0800

On Sat, Jan 14, 2017 at 09:24:42AM +0000, Laurent Bercot wrote:
>
> I suspect non-portability and complexity are the main reasons.
> The current runsvdir implementation is very simple. It's originally based
> on daemontools' "svscan" design, which polls every 5 seconds. runsvdir
> only polls 14 seconds, which is almost 3 times better. ;)
>
> s6-svscan (s6's equivalent of runsvdir) does not poll at all by default:
> it only rescans when you tell it to, via an external command
> (s6-svscanctl -a). That allows you to, for instance, set up a service with
> an inotifyd triggering a rescan on scandir changes, if that's the workflow
> you want.
>
> --
> Laurent

The s6-svscan behavior fits what I want to do, in this case runit is the distro-provided init and so I think it makes sense to patch runsvdir to avoid needing to change other parts of the system. It's slightly unfortunate that runsvdir isn't designed to be nested so I might do that too while I'm in there. I wouldn't expect runit upstream to be all that excited about either change though.
Received on Sun Jan 15 2017 - 02:54:05 UTC