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From: Ducrot Bruno <ducrot-kk6yZipjEM5g9hUCZPvPmw@public.gmane.org>
To: Herbert Nachtnebel
	<Herbert.Nachtnebel-8zxNtbQCHXIjuwv8T7myQQ@public.gmane.org>
Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	p.a.richards-Y3tGgqFSo3OFxr2TtlUqVg@public.gmane.org
Subject: Re: gettimeofday() moving backwards
Date: Thu, 19 Dec 2002 12:39:04 +0100	[thread overview]
Message-ID: <20021219113904.GF4257@poup.poupinou.org> (raw)
In-Reply-To: <B900970C7DD9474C972986EB3EC7C58F0D404F-PWLG29+z7hEKeIAE67mlpo2P0GrZ+RbP@public.gmane.org>

On Thu, Dec 19, 2002 at 11:01:22AM +0100, Herbert Nachtnebel wrote:
> In 2.4 there exists CONFIG_ASYNC_TSC to help with such things. 

Warn.  Some libc are broken, and will hang.  Be sure to update.
And mplayer when using win32 dll will segfault, also..

> I never tried it, but it should change the gettimeofday() 
> system call to not use the TSC for time calculations. This 
> results in a really slow system call since now it uses the PIT
> for every access, but the system time should be smoothly again.

ACPI timer could help, I guess.


-- 
Ducrot Bruno

--  Which is worse:  ignorance or apathy?
--  Don't know.  Don't care.


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  parent reply	other threads:[~2002-12-19 11:39 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-12-19 10:01 gettimeofday() moving backwards Herbert Nachtnebel
     [not found] ` <B900970C7DD9474C972986EB3EC7C58F0D404F-PWLG29+z7hEKeIAE67mlpo2P0GrZ+RbP@public.gmane.org>
2002-12-19 11:39   ` Ducrot Bruno [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-12-18 21:23 Grover, Andrew
     [not found] ` <EDC461A30AC4D511ADE10002A5072CAD04C7A5BB-OU+JdkIUtvd9zuciVAfUoVDQ4js95KgL@public.gmane.org>
2002-12-18 22:40   ` Dominik Brodowski
2002-12-18 19:53 Paul Richards
     [not found] ` <1040241199.3e00d22fe594b-Y3tGgqFSo3OFxr2TtlUqVg@public.gmane.org>
2002-12-19  0:09   ` Pavel Machek

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