LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Software
User Name
Password
Linux - Software This forum is for Software issues.
Having a problem installing a new program? Want to know which application is best for the job? Post your question in this forum.

Notices

Reply
 
Search this Thread
Old 01-23-2004, 05:17 AM   #1
jimieee
Member
 
Registered: Aug 2003
Location: London, UK
Distribution: Debian and Fedora for play and RHEL + Solaris for work
Posts: 172

Rep: Reputation: 15
ntp hell: System clock runs twice as fast as it should do


Hi,

I've got a problem with the software clock on my RH 9 box running kernel 2.4.21-lufs-030704. It all started when I noticed that it seemed to be running more than twice as fast as it should, so I adjusted the drift to -500 to slow it down. This seemed to help, but it's now just a bit closer to being twice as fast as it should be!

I know ntp is supposed to automatically compensate for big differences so I ran ntptime to find out what was going wrong and found the lines in bold a little worrying:

# ntptime
ntp_gettime() returns code 0 (OK)
time c3bb81be.eed6c000 Fri, Jan 23 2004 11:19:26.932, (.932964),
maximum error 335376 us, estimated error 16 us
ntp_adjtime() returns code 0 (OK)
modes 0x0 (),
offset 0.000 us, frequency -500.000 ppm, interval 4 s,
maximum error 335376 us, estimated error 16 us,
status 0x1 (PLL),
time constant 0, precision 1.000 us, tolerance 512 ppm,
pps frequency 0.000 ppm, stability 512.000 ppm, jitter 200.000 us,
intervals 0, jitter exceeded 0, stability exceeded 0, errors 0.

From the ntp how-to I know that I'm missing PPSSIGNAL from status, which means no PPS signal has been detected. My question is: What do I do about it??

Thanks in advance,

~James~

Last edited by jimieee; 01-23-2004 at 05:19 AM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
System Clock Running Fast PeaceTank Linux - General 4 07-07-2005 12:03 PM
System clock running too fast elahav Linux - Software 4 02-04-2005 07:47 PM
System clock is running too fast on RH 9 jimieee Linux - General 0 01-06-2004 11:24 AM
System clock is fast AND slow.... cbjhawks Linux - Hardware 1 09-10-2003 03:24 PM
System clock is fast AND slow.... cbjhawks Linux - Software 2 09-10-2003 03:03 PM


All times are GMT -5. The time now is 12:52 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration