Re: Time problem

Rikard Johnels <[email protected]> Wed, 13 Nov 2002 16:30:42 +0100
Newsgroups gmane.linux.suse.axp
Organization rikjoh
Message-ID <[email protected]>
On Wednesday 13 November 2002 14.26, Predrag Cvetkovic wrote:
> Hi!
> I have Compaq AlphaServer DS20E (here is /proc/cpuinfo)
>
> cpu                                  : Alpha
> cpu model                      : EV67
> cpu variation                  : 7
> cpu revision                   : 0
> cpu serial number         :
> system type                   : Tsunami
> system variation            : Catamaran
> system revision             : 0
> system serial number   : AY15203664
> cycle frequency [Hz]      : 666666666
> timer frequency [Hz]      : 1024.00
> page size [bytes]           : 8192
> phys. address bits         : 44
> max. addr. space #       : 255
> BogoMIPS                     : 1326.92
> kernel unaligned acc    : 12 (pc=fffffc000099baf8,va=11ffffedb)
> user unaligned acc       : 0 (pc=0,va=0)
> platform string               : COMPAQ AlphaServer DS20E 666 MHz
> cpus detected               : 2
> cpus active                    : 2
> cpu active mask            : 0000000000000003
>
> running SuSE 7.1 Alpha edition, kernel 2.4.19 (from Linus kernel tree,
> www.kernel.org), compiled with
> # CONFIG_RTC is not set
> System time on our machine is running late, about 20 seconds a day. Our job
> is very time dependant, tolerance is 5 seconds. Problem with RTC set was
> worse (about 30 sec./day).
> What can I do?
>
>                                                      Predrag Cvetkovic
>
> P.S. Sorry for my bad english...


I have a cronjob running om my server to set the clock (both software and 
hardware) once every hour.
That way i have a fairly correct time off by no more then a few milisecs.
My closk is stable to begin with, but this way i ensure its running as correct 
as possible.
The script running is:

#!/bin/sh
/usr/sbin/netdate ntp.lth.se
/sbin/hwclock --systohc
touch /root/cronlogs/setdate.run

The last line is just to give me a "proof" that the time is set. It can safely 
be removed.


-- 

         /Rikard

------------------------------------------------------------------------------------
Rikard Johnels		email	: [email protected]
			Web	: http://www.rikjoh.com
			Mob	: +46 70 464 99 39

------------------------ Public PGP fingerprint ----------------------------
< 15 28 DF 78 67 98 B2 16 1F D3 FD C5 59 D4 B6 78  46 1C EE 56 >