2
votes
1answer
95 views

What is the rationale behind the default values for adjtimex --adjust?

The adjtimex utility has an --adjust mode that can be used to compare the system clock with the CMOS clock, calculate suggested values for the tick and frequency offset kernel time variables, and ...
0
votes
3answers
93 views

Are there any decent vocal time / date / appointment announcers for Fedora Linux?

I'm looking for a Fedora / Linux application which announces the system time vocally at regular intervals, similar to the time announcement feature Mac OSX has. A quick look around Google hasn't ...
1
vote
0answers
168 views

Using NTPD as a client on Cent OS without Undisciplined Local Clock any disadvantage?

The following is the NTP configuration. My server is a physical system, not a virtual machine. The following ntp-4.2.2p1-15.el5.centos rpm I am using. tinker panic 0 restrict default kod nomodify ...
3
votes
1answer
321 views

Ubuntu server loses exactly 5 minutes once in a while

I noticed that my server, an Ubuntu server 12.04, was losing time. I figured the hardware clock was off or maybe dying due to a faulty CMOS battery. I installed NTP to ensure the drift would be ...
2
votes
0answers
247 views

Slow down clock/timer of a Linux program

Sometimes a Linux program requiring fast user interaction/manual dexterity runs too fast for me to keep up. Examples include video games and video players that don't let you control the speed. How ...
4
votes
1answer
7k views

What does “clocksource tsc unstable” mean?

Whenever I see Linux booting, I see this message: clocksource tsc unstable (delta = NNNNNNNN ns) where NNNNNNNN is some very large number which may be positive or negative. What does this message ...
1
vote
1answer
673 views

Relationship between hardware clock and system clock

I know that hardware clock is RTC, which is running still, even when PC (or another device with RTC) is off. (in linux we can see this time by typing "hwclock") The second mentioned time, system ...
2
votes
1answer
307 views

Synchornize linux clock without internet

How can I keep a clock from a linux machine updated if this linux machine have no internet access? The machine is in a network and others machine have internet access, but this particular one can't ...
1
vote
3answers
816 views

Why does the system clock run a lot faster than the hardware clock on Linux? [closed]

guys. I got a bizarre problem which is the system clock always runs a lot faster than the hardware clock. For example, I set both system clock and hardware clock to20:00. After about 15minutes later, ...
0
votes
5answers
531 views

How to freeze the clock for a specific task?

For example, # clock-pause # touch a # touch b # convert -draw `date` text_draw.gif # clock-resume Or, simply # freeze-exec sh -c 'touch a; touch b; convert -draw `date` text_draw.gif' The ...
2
votes
3answers
479 views

Clock correction in GNU/Linux: should I crontab the “hwlock --hctosys”?

My laptop's clock (Acer Extensa 5220) seems to be slow. I've corrected it 5 minutes forward last week and now have just corrected minute forward again. How it's better to fix it? Is there a program ...