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Date:      Wed, 15 Feb 2017 16:54:21 -0800
From:      Cy Schubert <Cy.Schubert@komquats.com>
To:        =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
Cc:        Cy Schubert <Cy.Schubert@komquats.com>, Alan Somers <asomers@freebsd.org>,  scrappy@freebsd.org, Brian Somers <brian@freebsd.org>, freebsd-bugzilla@ayaken.net, Cy Schubert <cy@freebsd.org>, pkg@freebsd.org
Subject:   Re: Bug 217055 - Consolidate random sleeps in periodic scripts
Message-ID:  <201702160054.v1G0sLt8048117@slippy.cwsent.com>
In-Reply-To: Message from =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> of "Tue, 14 Feb 2017 12:22:55 %2B0100." <868tp9j9tc.fsf@desk.des.no>

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In message <868tp9j9tc.fsf@desk.des.no>, =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?
= w
rites:
> Cy Schubert <Cy.Schubert@komquats.com> writes:
> > +	tty >/dev/null 2>&1 && daily_ntpd_avoid_congestion=NO
> 
> This won't work, because && forks.  You need:
> 
>    if [ -t 0 ] ; then ... ; fi

Are you sure?

slippy$ echo $$
29395
slippy$ true && echo $$
29395
slippy$ false || echo $$
29395
slippy$ echo $$
29395
slippy$ 


> 
> As for the subject matter, I think it's a good idea, and if periodic
> always sleeps for a random amount of time, there is no need for an
> additional sleep in 480.leapfile-ntpd (and frankly, I don't like that
> the current version leaves a task running in the background).

I concur as long as we don't incur gratuitous sleeps.


-- 
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX:  <cy@FreeBSD.org>   Web:  http://www.FreeBSD.org

	The need of the many outweighs the greed of the few.





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