Tags: time

Virtualizing the Clock

Dmitry Safonov wanted to implement a namespace for time information. The twisted and bizarre thing about virtual machines is that they get more virtual all the time. There's always some new element of the host system that can be given its own namespace and enter the realm of the virtual machine....
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USNO
Learn how to keep your computers synchronized, using NTP and systemd.

Keep Accurate Time on Linux with NTP

How to keep the correct time and keep your computers synchronized without abusing time servers, using NTP and systemd. What Time is It? Linux is funky when it comes to telling the time. You might think that the time tells the time, but it doesn't because it is a timer that measures how long a...
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Oculus Creates a New, Open Source Unit of Time to Measure Frame Rates

Of all the things we expected to come out of the rise of Oculus and the still-burgeoning era of consumer virtual reality, a new fundamental unit of time was not one of them. But that's just what Oculus and Facebook have rolled out this week in the form of the flick, a new definition that subdivides...
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pdd - Tool to Find Date and Time Difference in Linux Command Line

In some occasions where you want to check by how many years someone older than you, how old you are (in days, years or months), the countdown to an event or the next flash sale. There is a python-based command line application known as pdd which enables you to calculate date and time differences....
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An Introduction to Timekeeping in Linux VMs

Keeping time in Linux is not simple, and virtualization adds additional challenges and opportunities. In this article, I'll review KVM, Xen, and Hyper-V related time-keeping techniques and the corresponding parts of the Linux kernel. Timekeeping is the process or activity of recording how long...
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Attack of the Killer Microseconds

The computer systems we use today make it easy for programmers to mitigate event latencies in the nanosecond and millisecond time scales (such as DRAM accesses at tens or hundreds of nanoseconds and disk I/Os at a few milliseconds) but significantly lack support for microsecond (μs)-scale events....
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NTP
In this first of a three-part series, Chris Binnie looks at why NTP services are essential to a happy infrastructure.

Arrive On Time With NTP -- Part 1: Usage Overview

Few services on the Internet can claim to be so critical in nature as time. Subtle issues which affect the timekeeping of your systems can sometimes take a day or two to be realized, and they are almost always unwelcome because of the knock-on effects they cause. Consider as an example that your...
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