NTP and the real time clock
Whenever I turn off my 712/80 and turn it back on, NTP (ntpq) reports an offset of about 1200.
Question: Could it be that at shutdown the time is not stored in the on-board real-time-clock?
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Ralf Hildebrandt (Im Auftrag des Referat V A) [email protected] Charite Campus Virchow-Klinikum Tel. +49 (0)30-450 570-155 Referat V A - Kommunikationsnetze - Fax. +49 (0)30-450 570-916 Gates' Law: Every 18 months, the speed of software halves.
Am 06.05.2002 um 08:44:02 +0200 schrieb Ralf Hildebrandt folgendes:
Quoted 4 lines
Whenever I turn off my 712/80 and turn it back on, NTP (ntpq) reports an offset of about 1200.
Question: Could it be that at shutdown the time is not stored in the on-board real-time-clock?
I find this intriguing:
gecko:~# hwclock --show Mon May 6 08:46:27 2002 -0.994167 seconds gecko:~# hwclock --systohc gecko:~# hwclock --show Mon May 6 08:46:33 2002 -0.999854 seconds
So the hardwareclock is never set.
Which setting in "Character Devices" do I need so hwclock can access the on-board real-time-clock?
< > /dev/nvram support
< > Enhanced Real Time Clock Support
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Ralf Hildebrandt (Im Auftrag des Referat V A) [email protected] Charite Campus Virchow-Klinikum Tel. +49 (0)30-450 570-155 Referat V A - Kommunikationsnetze - Fax. +49 (0)30-450 570-916 There are two ways to write error-free programs. Only the third one works.
You'll need to set this option: CONFIG_GENRTC=y
----- Original Message -----
From: "Ralf Hildebrandt" <[email protected]>
To: "Ralf Hildebrandt" <[email protected]>
Cc: <[email protected]>
Sent: Monday, May 06, 2002 8:52 AM
Subject: Re: [parisc-linux] NTP and the real time clock
Quoted 14 lines
Am 06.05.2002 um 08:44:02 +0200 schrieb Ralf Hildebrandt folgendes:
Quoted 4 lines
Whenever I turn off my 712/80 and turn it back on, NTP (ntpq) reports an offset of about 1200.
Question: Could it be that at shutdown the time is not stored in the on-board real-time-clock?I find this intriguing:
gecko:~# hwclock --show Mon May 6 08:46:27 2002 -0.994167 seconds gecko:~# hwclock --systohc gecko:~# hwclock --show Mon May 6 08:46:33 2002 -0.999854 seconds
Quoted 8 lines
So the hardwareclock is never set.
Which setting in "Character Devices" do I need so hwclock can access the on-board real-time-clock?
< >/dev/nvramsupport
< > Enhanced Real Time Clock Support--
Ralf Hildebrandt (Im Auftrag des Referat V A)
Quoted 1 line
Charite Campus Virchow-Klinikum Tel. +49 (0)30-450
570-155
Quoted 1 line
Referat V A - Kommunikationsnetze - Fax. +49 (0)30-450
570-916
Quoted 9 lines
There are two ways to write error-free programs. Only the third one works.
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Quoted 9 lines
I find this intriguing:
gecko:~# hwclock --show Mon May 6 08:46:27 2002 -0.994167 seconds gecko:~# hwclock --systohc gecko:~# hwclock --show Mon May 6 08:46:33 2002 -0.999854 secondsSo the hardwareclock is never set.
Are you sure?
legolas:/usr/src/linux-ide# hwclock --show Mon May 6 00:05:08 2002 -0.995996 seconds legolas:/usr/src/linux-ide# date 050600002002 Mon May 6 00:00:00 PDT 2002 legolas:/usr/src/linux-ide# hwclock --systohc legolas:/usr/src/linux-ide# hwclock --show Mon May 6 00:00:23 2002 -0.999298 seconds
Quoted 4 lines
Which setting in "Character Devices" do I need so hwclock can access the on-board real-time-clock?
< >/dev/nvramsupport
< > Enhanced Real Time Clock Support
You want: "Generic RTC device support" (I think it's on by default). The fact that hwclock didn't give you an error suggests to me that you already have that enabled.
randolph
Am 06.05.2002 um 01:03:29 -0700 schrieb Randolph Chung folgendes:
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So the hardwareclock is never set.
Are you sure?
Well, no.
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legolas:/usr/src/linux-ide# hwclock --show Mon May 6 00:05:08 2002 -0.995996 seconds legolas:/usr/src/linux-ide# date 050600002002 Mon May 6 00:00:00 PDT 2002 legolas:/usr/src/linux-ide# hwclock --systohc legolas:/usr/src/linux-ide# hwclock --show Mon May 6 00:00:23 2002 -0.999298 seconds
OK, seems to work.
But what is that "-0.999298 seconds" stuff?
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Ralf Hildebrandt (Im Auftrag des Referat V A) [email protected] Charite Campus Virchow-Klinikum Tel. +49 (0)30-450 570-155 Referat V A - Kommunikationsnetze - Fax. +49 (0)30-450 570-916 When the government outlaws cryptography, bayl pevzvanyf jvyy unir cevinpl.