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Questions tagged [time]

Time is a dimension in which events can be ordered from the past through the present into the future, and also the measure of durations of events and the intervals between them.

Time is a dimension in which events can be ordered from the past through the present into the future, and also the measure of durations of events and the intervals between them.

It has been said that time is used by the universe to ensure that everything doesn't happen all at once.

It has also been said that: "Time is an illusion, lunchtime doubly so." Not everyone agrees on the nature of time, and time is not fully understood even today.

Because human time perception can be wildly inaccurate, and many system services rely on the close synchronization of clocks, we have specialized clocks do the measurement of time for us. On the Internet, data from these clocks is made available via .

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Syncing Domain Controller Clocks

It appears some computers in our computer lab have clocks running about 3-4 minutes fast. As of right now, when we join a computer to the domain, it sets the clock based on our server's Domain Controller clock (Windows Server 2008 R2). How can we…
Aaron
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How can I sync time between two ubuntu computers, not connected to the internet

I have two computers connected to each other over an ad-hoc wifi. How can I make the first computer always sync to the time of the second computer? I tried playing with NTP, but could not figure out how to make it work in this situation.
Yogi
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What happens when you sync your hardware clock in a VM?

This thought occured to me and while not an actual problem I'm curious to know. When a virtual machine syncs it's clock with the hardware clock does that sync the hardware clock of the host? Change to software clock of the host? Does the time…
TrueDuality
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How precise is cron?

I am trying to set up a python script to query a DB for all updates over the past 5 minutes. Given the number of updates, it must be as precise as possible (our records are timestamped to the microsecond). There are two ways I'm considering tackling…
Matthew
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Windows Server 2008 - inexplicable system time jumps/glitches/inaccuracies

I'm running a production web server on Windows Server 2008. On this server I have a database which logs certain user actions, but every now and again I inexplicably get database entries which, according to the record ID and the records immediately…
Nathan Ridley
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How to set the date forward on a linux server and prevent it from resetting back to the correct time

I need to set the time on an Ubuntu Server forward 1 week, and keep it there (this is for a testing environment with date-specific conditions which need to be tested/verified by the stakeholders), however when I do this (with date -s…
Matthew Savage
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Why does Ubuntu 9.04 reset my Windows clock?

I've got a rig with 2 hard drives. I've put Ubuntu 9.04 (Jaunty) on one of the drives and Windows Vista SP2 runs on the other drive. I went with this approach rather than dual boot since I wanted to be able to swap out the OSes as I please and just…
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Converting to and from epoch time

I often find myself needing to convert from one type of time to another, and haven't found a way I'm consistently happy with. Every time I do a quick google search, I come up with different (sometimes painfully complex) answers. I'm happy with date…
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Linux Cumulative User, System CPU Usage of Running Process?

On Linux (and other Unix-like OS's if there's a general answer), is there an easy way to get an output similar to the time command (current real time, user, and system CPU usage totals) for a process that is still running?
dsimcha
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Excessive clock drift on AMD Athlon prevents ntpd from synchronizing clock

I've got an AMD Athlon XP-2500+ host (Shuttle MN31 motherboard, nForce 2 IGP + MCP-T chipset) running 32-bit Ubuntu 9.10 (i686 2.6.31-20-generic kernel). Unfortunately, it appears that the clock drift on it is so bad (it advances close to an extra…
cjs
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Summer daylight time not changing on some active directory domain clients

We just had a summer daylight change in US. and pc's on my network are behaving strange, some of them change time and some didn't. My network: 2 locations both in Midwest, same time zone. Location 1: 120 pcs (windows xp & windows 200) , with 1…
konung
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Windows Server 2022 Time Service Jumping into the future

A handful of times over the last few months one of our Windows Server 2022 boxes will show a warning in the Event Log similar to this The time service has set the time with offset 19630688 seconds., which will then jump forward in time that many…
chris1out
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Sync ntp immediately at boot with undiciplined clock

I have setup one ntp server and 5 clients. I want to force sync the clients to server clock on boot. With my current ntp settings the computers are syncing but after several minutes. I cannot wait so long for them to synchronise. I am not using a…
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Subsequent calls to WMIC return a localdatetime with a deviating timezone

The problem In our company environment we use several batch files which use WMIC to retrieve the current time. Usually to print it to log files, but also to include the timestamp in a file name. Starting with Windows 10 - we do not remember seeing…
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Time not propagating to machines on Windows domain

We have a two-domain Active Directory forest: ourcompany.com at the root, and prod.ourcompany.com for production servers. Time is propagating properly through the root domain, but servers in the child domain are unable to sync via NTP. So the time…
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