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From: David Mosberger-Tang <David.Mosberger@acm.org>
To: linux-ia64@vger.kernel.org
Subject: Re: [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze
Date: Mon, 19 Sep 2005 18:10:40 +0000	[thread overview]
Message-ID: <ed5aea4305091911105512fcb@mail.gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.62.0509091501240.12956@schroedinger.engr.sgi.com>

On 9/19/05, Christoph Lameter <clameter@engr.sgi.com> wrote:

> However, any mechanism like that will have a time running strangely fast
> for awhile which may cause other subsystems to misbehave.

That's already true due to NTP.

> I still think that the proposed patch is the best compromise solution
> since it restored the normal flow of time as soon as possible.

I disagree.  Time jumps are much worse than making time go slightly
faster/slower for a period of time.  What's even better, the timeouts
you're seeing when making time jump almost certainly will just
disappear, which is extremely nice.

  --david
-- 
Mosberger Consulting LLC, voice/fax: 510-744-9372,
http://www.mosberger-consulting.com/
35706 Runckel Lane, Fremont, CA 94536

  parent reply	other threads:[~2005-09-19 18:10 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-09-09 22:02 [RFC] timer_interrupt: Avoid device timeouts by freezing time if Christoph Lameter
2005-09-09 22:10 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze Magenheimer, Dan (HP Labs Fort Collins)
2005-09-09 22:33 ` David Mosberger-Tang
2005-09-09 22:36 ` Luck, Tony
2005-09-09 23:13 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time Christoph Lameter
2005-09-09 23:18 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze David Mosberger-Tang
2005-09-09 23:19 ` Magenheimer, Dan (HP Labs Fort Collins)
2005-09-11 17:04 ` Magenheimer, Dan (HP Labs Fort Collins)
2005-09-12 16:27 ` Tian, Kevin
2005-09-12 16:42 ` Tian, Kevin
2005-09-19 18:04 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time Christoph Lameter
2005-09-19 18:10 ` David Mosberger-Tang [this message]
2005-09-19 18:23 ` Christoph Lameter
2005-09-19 19:06 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze Luck, Tony
2005-09-19 19:21 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time Christoph Lameter
2005-09-19 20:16 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze David Mosberger-Tang
2005-09-19 21:26 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time Christoph Lameter
2005-09-19 21:32 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze David Mosberger-Tang
2005-09-19 21:38 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time Christoph Lameter
2005-09-19 22:03 ` [RFC] timer_interrupt: Avoid device timeouts by freezing time if system froze Luck, Tony
2005-09-19 22:12 ` David Mosberger-Tang

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