[ltp] clock drift

Michael Eyrich linux-thinkpad@www.bm-soft.com
Thu, 4 May 2000 21:01:31 +0200


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On Thu, May 04, 2000 at 10:29:27AM -0400, Bradley W. Langhorst wrote:
| "Joachim F. Selinger" wrote:
| >=20
| > Hi George!
| >=20
| > On  3 May, George Staikos wrote:
| > > Has anyone noticed problems with clock drift?  In particular I'm usin=
g a
| > > Thinkpad i1460 and Redhat 6.1 with kernel 2.2.13.  I can't for the li=
fe
| > > of me keep my clock set to the proper time or date.  I think it loses
| > > time worst when the machine goes to sleep or gets powered off (perhaps
| > > also when it switches to battery).
| I can't explain why this worked for me =20
| but i switched to keeping GMT in the hardware clock
| and letting linux deal with the timezone translation.
| I don't boot windows on this machine ever so this is fine
| and I don't get screwy time anymore even when suspending and
| resuming etc.

The kernel has the option to define if your machine runs in local time
or in GMT. This setting should result in a drift in the order of
hours.

However, if your hardware clock keeps time correct you may set the
actual time by calling 'hwclock' from within the 'apmd'.

Michael

--=20
Michael Eyrich                                        PRZ,  TU-Berlin
michey@prz.tu-berlin.de                               meyrich@acm.org
 Fingerprint: 4FAE 80C2 A8D2 9752 023A  EABA 6FB4 EB7E 6D08 C25C

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