[Techtalk] Excessive clock drift

Stephanie Boyd slb at ixtab.org.uk
Wed Oct 16 23:18:38 EST 2002


Hi,

We've just got a new Athlon 1600+ (1.4GHz and 133 FSB) and a GA-7VKML
motherboard and I'm seeing excessive drift in the system clock (just
over +1 second per minute) which is greater than ntp can correct.
 
The problem seems to be with the system clock, as the following output
shows the difference between the hardware clock and the system clock
is close to that reported by ntp.

root at ixchel:jjm# date; hwclock --show; ntpdate -q ntp.demon.co.uk
Wed Oct 16 22:26:23 BST 2002
Wed Oct 16 22:26:19 2002  -0.478815 seconds
server 158.152.1.76, stratum 2, offset -5.061046, delay 0.05101
16 Oct 22:26:24 ntpdate[3408]: step time server 158.152.1.76 offset -5.061046 sec

I should mention that this has been seen under kernels 2.4.18 and 2.4.19
(which we've been running successfully on other machines for some time).

Has anyone seen this type of clock drift on Athlons before ? 

    Regards,
    	  Stephanie
	  
(I've CC'ed my partner as he is not subscribed and knows a great deal more
about hardware than me!)

-- 
Stephanie Boyd				http://www.ixtab.org.uk/slb

'The computer continued, brash and cheery, as if it were selling detergent.'
				-- The Hitchhiker's Guide to the Galaxy



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