Re: System clock speed too high - 2.6.3 kernel

From: George Anzinger <george@mvista.com>
To: Praedor Atrebates <praedor@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: System clock speed too high - 2.6.3 kernel
Date: Fri, 26 Mar 2004 13:46:31 -0800	[thread overview]
Message-ID: <4064A4B7.5030103@mvista.com> (raw)
In-Reply-To: <200403261430.18629.praedor@yahoo.com>

Praedor Atrebates wrote:
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> In doing a web search on system clock speeds being too high, I found entries 
> describing exactly what I am experiencing in the linux-kernel list archives, 
> but have not yet found a resolution.
> 
> I have Mandrake 10.0, kernel-2.6.3-7mdk installed, on an IBM Thinkpad 1412 
> laptop, celeron 366, 512MB RAM.  I am finding that my system clock is ticking 
> away at a rate of about 3:1 vs reality, ie, I count ~3 seconds on the system 
> clock for every 1 real second.  I am running ntpd but this is unable to keep 
> up with the rate of system clock passage.  
> 
> I had to slow my keyboard repeat rate _way_ down in order to be able to type 
> at all as well.   The system is limited, in that I have no way to alter the 
> actual system clock (in bios at any rate).  The CPU is properly identified as 
> a celeron 366.  
> 
> Does anyone have any enlightenment, or a fix, to offer?  The exact same 
> software setup on a desktop system, Athlon XP2700+, has no such problems.

Try this in the boot command line "clock=pmtmr".  If that fails, then try 
"clock=pit".

-g
> 
> praedor
> - -- 
> "George W. Bush is a deserter, an election thief, a drunk driver, a WMD 
> liar and a functional illiterate. And he poops his pants." 
> - --Barbara Bush, his mother
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-- 
George Anzinger   george@mvista.com
High-res-timers:  http://sourceforge.net/projects/high-res-timers/
Preemption patch: http://www.kernel.org/pub/linux/kernel/people/rml