From: Christoph Lameter <clameter@engr.sgi.com>
To: tglx@linutronix.de
Cc: linux-kernel@vger.kernel.org, mingo@elte.hu, akpm@osdl.org,
george@mvista.com, johnstul@us.ibm.com, paulmck@us.ibm.com
Subject: Re: [ANNOUNCE] ktimers subsystem
Date: Mon, 19 Sep 2005 15:03:58 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.62.0509191500040.27238@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20050919184834.1.patchmail@tglx.tec.linutronix.de>
On Mon, 19 Sep 2005 tglx@linutronix.de wrote:
> sources. Another astonishing implementation detail of the current time
> keeping is the fact that we get the monotonic clock (defined by POSIX as
> a continous clock source which can not be set) by subtracting a variable
> offset from the real time clock, which can be set by the user and
> corrected by NTP or other mechanisms.
The benefit or drawback of that implementation depends which time is more
important: realtime or monotonic time. I think the most used time value is
realtime and not monotonic time. Having the real time value in xtime
saves one addition when retrieving realtime.
next prev parent reply other threads:[~2005-09-19 22:04 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-19 16:48 [ANNOUNCE] ktimers subsystem tglx
2005-09-19 16:48 ` [PATCH] " tglx
2005-09-19 21:47 ` [ANNOUNCE] " Thomas Gleixner
2005-09-19 22:03 ` Christoph Lameter [this message]
2005-09-19 22:17 ` Thomas Gleixner
2005-09-19 22:24 ` Christoph Lameter
2005-09-19 22:44 ` Thomas Gleixner
2005-09-19 22:50 ` john stultz
2005-09-19 22:58 ` Thomas Gleixner
2005-09-19 23:04 ` Christoph Lameter
2005-09-19 23:12 ` Thomas Gleixner
2005-09-20 7:14 ` Ingo Molnar
2005-09-20 7:10 ` Ingo Molnar
2005-09-21 19:24 ` Pavel Machek
2005-09-19 22:39 ` Christopher Friesen
2005-09-19 22:54 ` Thomas Gleixner
2005-09-20 4:57 ` Christopher Friesen
2005-09-20 5:11 ` Thomas Gleixner
2005-09-20 0:43 ` George Anzinger
2005-09-21 19:50 ` Roman Zippel
2005-09-21 22:41 ` Thomas Gleixner
2005-09-22 12:59 ` Ingo Molnar
2005-09-22 23:09 ` Roman Zippel
2005-09-22 23:31 ` Christopher Friesen
2005-09-23 0:25 ` Roman Zippel
2005-09-23 6:49 ` Thomas Gleixner
2005-09-24 3:15 ` Roman Zippel
2005-09-24 5:16 ` Ingo Molnar
2005-09-24 10:35 ` Roman Zippel
2005-09-24 13:56 ` Thomas Gleixner
2005-09-24 16:51 ` Daniel Walker
2005-09-24 23:45 ` Roman Zippel
2005-09-25 21:00 ` Thomas Gleixner
2005-09-27 16:54 ` Roman Zippel
2005-09-27 19:03 ` Tim Bird
2005-09-28 16:36 ` Roman Zippel
2005-09-25 21:02 ` Thomas Gleixner
2005-09-27 16:48 ` Roman Zippel
2005-09-27 18:38 ` Tim Bird
2005-09-27 20:36 ` George Anzinger
2005-09-23 2:25 ` john stultz
2005-09-23 8:27 ` Thomas Gleixner
2005-09-24 2:43 ` Roman Zippel
2005-09-24 5:03 ` Ingo Molnar
2005-09-24 9:04 ` James Bruce
2005-09-23 15:21 ` Paul E. McKenney
2005-09-24 3:38 ` Roman Zippel
2005-09-25 15:48 Sid Boyce
2005-09-25 18:20 ` Zwane Mwaikambo
2005-09-26 0:02 ` Sid Boyce
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