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11-01-2004 06:13 AM
11-01-2004 06:13 AM
The clock ran normally under FC1. Under the latest two versions, the desktop clock (2.8.1), is set to internet time on machine bootup, but then quickly loses time. Today, with wireless network access running it is taking 70seconds to pass a real minute. But generally it's even slower than this: 75 - 90 seconds to pass one minute.
Re-setting system time using the ntp source fixes it, but it soon drifts away from the real time. Under winXP clock is OK.
I understand that the OS retrieves the RTC time at boot, and then free runs based on a timing loop, before writing the time back to RTC at os shutdown ?
So it seems the calibration of the delay loop is out of whack (both the kernels are 2.6 series). Where can it be fixed ?
[an interesting side effect is that I get apparent broadband download speeds 90/60 % better than my real connection speed ;-) ]
Solved! Go to Solution.
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11-01-2004 06:49 AM
11-01-2004 06:49 AM
Solutionclock=pmtmr
to my kernel boot line. The kernel can use one of several different clock sources. On this hardware, pmtmr seems to be much more reliable than the default used in 2.6 kernels.
Bruce
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11-01-2004 07:05 AM
11-01-2004 07:05 AM
Re: compaq nx9000 & fedora core 2/3test3 - clock slow
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11-01-2004 09:47 PM
11-01-2004 09:47 PM
Re: compaq nx9000 & fedora core 2/3test3 - clock slow
/boot/grub/grub.conf, for my fedora boot entry, add
clock=pmtmr
to the kernel line.
My clock now runs to within 0.25 second over a minute, which is probably good enough without seeing eg how long it loses in a day.
Thanks Bruce.
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