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01 Aug 09

Rondam Ramblings: Time Machine and Mail: a match made in hell


  • The problem is this: imagine you have a folder with a lot of mail messages in it. A new message arrives, which gets stored in a new file. Time Machine knows that only this one file has changed, and so only this one file has to be copied. Unfortunately, to store this one file in a way that makes it appear that it's a complete backup, while it doesn't have to *copy* all those other files, it does have to create hard links for them all. And for small files, like most mail messages tend to be unless they have a lot of attachments, creating a hard link is no faster than actually copying the file.
06 Mar 09

Is time an illusion? - physics-math - 19 January 2008 - New Scientist

You are not alone. Physicists have long struggled to understand what time really is. In fact, they are not even sure it exists at all. In their quest for deeper theories of the universe, some researchers increasingly suspect that time is not a fundamental feature of nature, but rather an artefact of our perception. One group has recently found a way to do quantum physics without invoking time, which could help pave a path to a time-free "theory of everything". If correct, the approach suggests that time really is an illusion, and that we may need to rethink how the universe at large works.

www.newscientist.com/...1.500-is-time-an-illusion.html - Preview

time science

18 Apr 07

Creation time for files in Linux - TechEnclave

  • ^ You can't find creation time for a file. It isn't stored anywhere. Files have a last-modified time (shown by "ls -l"), a last-accessed time (shown by "ls -lu") and an inode change time (shown by "ls -lc"). The latter is often referred to as the "creation time" - even in some man pages -but that's wrong; it's also set by such operations as mv, ln, chmod, chown and chgrp.
22 Aug 06

SlimTimer

  • Kiko author's another web2.0 - joel on 2006-08-22
24 Apr 06

Re: Slow system clock?

  • It was the problem! I disabled APM in the BIOS and let linux run overnight. The
    time was accurate the following morning. I just finished rebuilding & booting
    a new kernel with APM support and turned BIOS power management back on. I think
    it's licked.

Quick HOWTO: Configuring Linux NTP Servers

  • Use the ntpq command
    to see the servers with which you are synchronized. It provided you with a list
    of configured time servers and the delay, offset and jitter that your server is
    experiencing with them. For correct synchronization, the delay and offset values
    should be non-zero and the jitter value should be under 100.
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