November 2004
Intermediate to advanced
368 pages
10h 24m
English
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Chapter 5. openMosix
openMosix is software that extends the Linux kernel so that processes can migrate transparently among the different machines within a cluster in order to more evenly distribute the workload. This chapter gives the basics of setting up and using an openMosix cluster. There is a lot more to openMosix than described here, but this should be enough to get you started and keep you running for a while unless you have some very special needs.
What Is openMosix?
Basically, the openMosix software includes both a set of kernel patches and support tools. The patches extend the kernel to provide support for moving processes among machines in the cluster. Typically, process migration is totally transparent to the user. However, by using the tools provided with openMosix, as well as third-party tools, you can control the migration of processes among machines.
Let’s look at how openMosix might be used to speed
up a set of computationally expensive tasks. Suppose, for example,
you have a dozen files to compress using a CPU-intensive program on a
machine that isn’t part of an openMosix cluster. You
could compress each file one at a time, waiting for one to finish
before starting the next. Or you could run all the compressions
simultaneously by starting each compression in a separate window or
by running each compression in the background (ending each command
line with an &). Of course, either way will take about the same amount of time and will load down your computer while ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.