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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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How much clock asynchronicity can secure protocols tolerate?

I've noticed that connections to a secure server got reset if time is out of sync on a server. I believe time synchronization protocols can be just as precise to the order of network latency with the external time servers, which could be as much as…
George Polevoy
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Is it better to use the systemd service unit's Restart & RestartSec, or use a systemd timer unit?

I have a couple of in-house automated scripts running at periodic intervals. One is every five minutes, the other is every minute. They don't really need to be ran on-the-dot; e.g. I don't care if they run at 12:00, 12:05, etc. or at 12:03, 12:08,…
Carl Bennett
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"Issued certificate not yet valid." with wget?

I am getting the following error when using wget to fetch a file: Issued certificate not yet valid. To connect to www.atlassian.com insecurely, use ‘--no-check-certificate’. Testing with openssl returns a similar message: Verify return code: 9…
AXE Labs
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Why is the time messed up on my Ubuntu Server VPS?

A month back loads of services on my VPS stopped working. After messing about for an hour or so i worked out that the time had frozen. I gather it was some sort of virtualization bug and a reboot soon fixed it. However, today I was trying to run my…
Tim
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Time too quick in debian, 72 minutes pass in system date in one real world second

Having trouble with system date/time in GNU/Linux/Debian: Time goes too fast for date, time, cron. The sleep command works fine, file modification times are correct. The issue explained via commands: $ date Mon Sep 12 05:27:46 CEST 2011 $ time…
Buella Gábor
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Allow Facebook access only in specific hours of the day with squid

I've been able to install squid on my Ubuntu Server with basic authentication and everything works perfectly. Recently the boss asked to block facebook access and I did it with no problems. Now it looks that he wants to give the users possibility to…
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How to synchronize the clock of a windows server 2003 domain server?

Given a windows server 2003 domain server, I'd like to sync it's time to (any) external time services (it's off a couple of minutes). How to do this 1, manually; 2, in an automated manner every week?
Silver Dragon
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Uptime of a Windows machine

How can one find out 'real' uptime of a laptop? By 'real' I mean the time since turning it on and resuming Windows from hybernation state.
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Record load time of web pages

I have been asked to investigate a way of record how long it a full page request is on our website. i.e. how long it takes from when a user clicks on a link till the page has finished loading. Now I've had a look at Google Analytics and this appears…
Neil
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Public NTP servers

Is there a list of public NTP servers on the internet I can use.
Alan H
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Windows Server 2012 time keeps setting itself 12 minutes ahead

Our Active Directory server has a problem whereby the time keeps setting itself 12 minutes ahead of the real time. This causes authentication issues on the network. I have tried syncing to an external NTP service with the following: w32tm /config…
Aaron Cunnington
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What is an acceptable secure time source in a datacentre environment?

GPS and NTP are two very typical time sources when accurate clocks are required. However, each has an important failing. NTP does not provide authentication of the time source, and so may be vulnerable to spoofing. GPS doesn't work very well…
Falcon Momot
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hyper-v server time sync source - PDC / external NTP?

The environement: 10 Hyper-V hosts, all AD joined a lot of VMs AD joined and some not some AD DCs including PDC as Guests What You think is the best approach to time sync a hyper-v farm with AD controllers as guests ? I got 2 plans :) what would…
Bartłomiej Zarzecki
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CPAN fails to install DateTime module

I tried to install the Perl DateTime module by running "cpan" and typing "install DateTime" at the prompt. After a lot of processing and printing I got this message: Compilation failed in require at (eval 907) line 3. # Looks like your test died…
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Is it viable to use w32tm /stripchart to judge time variance of two Windows hosts from each other? A better way to discover two host's time variance?

Is it viable to use w32tm.exe's option stripchart to judge the time variance of two hosts (within a very small margin of error)? Note that w32tm.exe's stripchart function is separate than the algorithm used by the Windows Time service itself. If…
brandeded
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