From: Emanuel Berg <embe8573@student.uu.se>
Subject: Re: how to analyze clock drift
Date: Fri, 21 Nov 2014 23:31:13 +0100
Date: 2014-11-21T23:31:13+01:00 [thread overview]
Message-ID: <8761e8i3ta.fsf@debian.uxu> (raw)
In-Reply-To: 87egswi7bw.fsf@debian.uxu
Emanuel Berg <embe8573@student.uu.se> writes:
> Is that considered reliable to the point it makes
> sense diagnosing sleep_until with that instead of
> the C++'s now()?
On the other hand, isn't that from where now() gets
its data?
I have checked the following docs:
http://en.cppreference.com/w/cpp/chrono/system_clock/now
http://en.cppreference.com/w/cpp/thread/sleep_until
For sleep_until, they say:
The clock tied to sleep_time is used, which means
that adjustments of the clock are taken into
account. Thus, the duration of the block might,
but might not, be less or more than sleep_time -
Clock::now() at the time of the call, depending on
the direction of the adjustment. The function also
may block for longer than until after sleep_time
has been reached due to scheduling or resource
contention delays.
But for now(), they don't say one word it should be
unreliable so it should be enough to diagnose
sleep_until.
--
underground experts united
prev parent reply other threads:[~2014-11-21 22:31 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-18 22:12 how to analyze clock drift Emanuel Berg
2014-11-19 1:41 ` tmoran
2014-11-19 2:10 ` Emanuel Berg
2014-11-19 10:30 ` Jacob Sparre Andersen
2014-11-19 22:15 ` Emanuel Berg
2014-11-20 16:27 ` Stephen Leake
2014-11-20 1:10 ` Emanuel Berg
2014-11-20 14:11 ` Dennis Lee Bieber
2014-11-19 13:08 ` Brian Drummond
2014-11-19 2:10 ` Simon Clubley
2014-11-19 2:37 ` Emanuel Berg
2014-11-19 2:28 ` Dennis Lee Bieber
2014-11-19 2:44 ` tmoran
2014-11-19 2:51 ` Emanuel Berg
2014-11-19 9:01 ` Dmitry A. Kazakov
2014-11-19 22:12 ` Emanuel Berg
2014-11-20 9:42 ` Dmitry A. Kazakov
2014-11-20 20:41 ` Emanuel Berg
2014-11-20 21:27 ` Dmitry A. Kazakov
2014-11-20 21:54 ` Emanuel Berg
2014-11-20 21:57 ` Emanuel Berg
2014-11-21 2:27 ` Dennis Lee Bieber
2014-11-21 3:02 ` Emanuel Berg
2014-11-21 16:49 ` Dennis Lee Bieber
2014-11-21 21:06 ` Emanuel Berg
2014-11-22 18:18 ` Dennis Lee Bieber
2014-11-23 20:15 ` Emanuel Berg
2014-11-24 1:15 ` Dennis Lee Bieber
2014-11-24 1:34 ` Emanuel Berg
2014-11-24 9:22 ` Jacob Sparre Andersen
2014-11-24 17:30 ` Dennis Lee Bieber
2014-11-24 8:44 ` Dmitry A. Kazakov
2014-11-24 17:24 ` Dennis Lee Bieber
2014-11-24 18:28 ` Dmitry A. Kazakov
2014-11-24 20:30 ` brbarkstrom
2014-11-24 21:03 ` Dmitry A. Kazakov
2014-11-24 21:34 ` brbarkstrom
2014-11-25 14:04 ` brbarkstrom
2014-11-25 18:16 ` Dennis Lee Bieber
2014-11-25 20:50 ` brbarkstrom
2014-11-21 21:15 ` Emanuel Berg
2014-11-21 22:31 ` Emanuel Berg [this message]
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox