From owner-freebsd-questions  Sun Feb 27  4:26: 8 2000
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Date: Sun, 27 Feb 2000 07:26:00 -0500
From: Paul Murphy <pnmurphy@home.com>
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To: Dan O'Connor <dan@jgl.reno.nv.us>
Cc: freebsd-questions <freebsd-questions@FreeBSD.ORG>
Subject: Re: My machine prints "calcru: negative time..."
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Dan O'Connor wrote:
> 
> > Is there any way of tracking down _exactly_ what is causing the
> >"calcru" failure?
> 
> Take a look at the output from 'dmesg' and find the TSC line:
> 
>     Timecounter "TSC"  frequency 90205147 Hz
> 
> Is it anywhere close to the real speed of your CPU?
> 

Timecounter "i8254"  frequency 1193182 Hz
CPU: i486 DX2 (486-class CPU)
  Origin = "GenuineIntel"  Id = 0x436  Stepping=6
  Features=0xb<FPU,VME,PSE>

 That doesn't seem right, does it? 1.2 MHz?
 It is actually a  486DX2/66. Is the 'Timecounter' settable in the
kernel?

> 
> There's also a solution in the archives (if they're up yet) about setting
> the TSC value (machdep.tsc_freq) with sysctl, but it's never worked for me.

I will look into that.

> 
> BTW, I think this is a hardware fluke, not really FBSD's fault. My Dell P166
> server at work has *never* given me fits like my P90 machine does...
> 

Yes, I have another FBSD machine that cause no problems.


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