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Re: RE: clock drift?
are there more informatin on clock drift and how to prevent it ?
The board here is exspected to run sometime without resync. Any
information would be helpfull.
- - - - - - - - - - - - - - Original Message - - - - - - - - - - - - - -
From: Mikael Starvik <email@example.com>
Subject: RE: clock drift?
Date: 01/23/04 14:35
There are a couple of issues with older kernels that causes clock drift:
1. Under high interrupt load some timer ticks could be lost. In some
rare cases this even caused the watchdog to bite. This was fixed
just after 2.4.14. Check in include/asm/irq.h if there is a
BUILD_TIMER_IRQ macro. If not you have this problem.
2. The normal timers in ETRAX runs 64ppm too fast. This has been
fixed after 2.4.16.
From: firstname.lastname@example.org">mailto:email@example.com] On
Behalf Of Ronny L Nilsson
Sent: Friday, January 23, 2004 2:27 PM
Subject: clock drift?
I'm woundering if anyone but me has experienced substantial system
clock drift with devboard_lx? I've had reports of the system time being
several hours off after just a couple of days uptime. Some drift I
expect since I'm not using NTP but several hours? Anyone has an idea?
P.S. Kernel 2.4.14 used.