From: Giuliano Colla <giuliano.colla@fastwebnet.it>
To: linux-rt-users@vger.kernel.org
Subject: Re: CLOCK_MONOTONIC issue
Date: Mon, 22 Jun 2015 14:42:12 +0200 [thread overview]
Message-ID: <558802A4.10908@fastwebnet.it> (raw)
In-Reply-To: <20150622114023.GB2539@netboy>
Il 22/06/2015 13:40, Richard Cochran ha scritto:
> On Mon, Jun 22, 2015 at 01:06:28PM +0200, Giuliano Colla wrote:
>> Using as a parameter CLOCK_REALTIME everything appears to work as expected,
>> but if I attempt to use CLOCK_MONOTONIC (which should be a more reliable
>> timing source, from what I read), I get bogus times.
> What do you mean by "bogus times"?
I mean that the timing of sem_timedwait() appears to be inconsistent
with the requested values.
But I believe I've found the reason in the meantime.
According the documentation, sem_timedwait() uses CLOCK_REALTIME, and it
would appear that it can't be configured differently.
If I supply an absolute time value calculated from a different clock
source, of course I'm bound to find inconsistencies!
Thanks however.
Giuliano
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prev parent reply other threads:[~2015-06-22 12:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 11:06 CLOCK_MONOTONIC issue Giuliano Colla
2015-06-22 11:40 ` Richard Cochran
2015-06-22 12:42 ` Giuliano Colla [this message]
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