power management

A useful power-performance metric (Part IIa, the goal)


What is our ultimate goal? What do we want to do with our life? Is life important or just a meaningless exercise in futility? These are very important questions but generally irrelevant to this discussion.

So what is our ultimate goal here in this series of articles? We want to come up with a useful measure of power-performance for an application, such as Joules per instructions for a given app. But as we will see, finding this answer is much less clear cut than it first appears.

Performance per Watt: Hey, I already know it’s important, don’t I? (The intro, part I)

What is performance per Watt?

Performance per Watt is pretty straight forward when you first look at it. Then you begin to sink in the quicksand you’ve blithely walked into. The panic sets in as you sink lower and lower. Eventually you decide to ignore the whole complicated mess and go back to saying to yourself how straight forward it is. Of course, deep within your heart of hearts, you know that it’s not.

For most of us, performance per Watt is nothing more than how much our computer can get done on a given battery charge.

Performance per Watt: Hey, I already know it’s important, don’t I? (The preface)

One of the big advantages of blogging is that I can write about anything I want, as long is it doesn’t violate any Intel conduct rules, refer to any competitors, reveal any confidential information, insult anyone, compliment people (yeah, I said compliment), and so on and so on and so on. Outside of that, I have a free hand.

PowerTOP: Dave enters a video game

Always wanted to see Dave Stewart fragged, as in "killed in a video game" ?

Yes, I knew you did. Ah, yet another analogy goes haywire.

This is another in a series of digital shorts about work Intel is doing in OpenSolaris. (Have I really done 15 of these things). This one is about PowerTOP, and how you can use it to "green" your software applications and drivers. I also talk about our use of DTrace to collect the information. And too, the video production guys have fun with a few special effects as well. Enjoy.

Sun + Intel + OpenSolaris + 2 Years = The Year of Core

Today is the second anniversary of the Sun and Intel joint agreement to optimize the Solaris operating system for Intel Xeon processors. Like last year, when I wrote this summary of our work, I decided to recap where we are to date.

Like last year’s edition, this is pretty much off the top of my head.

OpenSolaris and Nehalem - a digital short

Another in the series of 5-minute videos on OpenSolaris and Xeon Processors.

This one is about the details in our work on the Intel Core i7 processor, previously known as the codename "Nehalem". The community has been busting hump all year with a laser focus on optimizing OpenSolaris and Solaris for Nehalem. And why not? The architecture has some truly new and exciting advancements for Intel.

Hope you like it - appreciate your comments.

Original video source

OpenSolaris and Centrino 2

Last summer, Intel launched our latest mobile computing platform, branded Intel Centrino 2 processor technology. For a long time as we were doing OpenSolaris development, I used to know this platform by its codename "Montevina", but that's all history now. Long live Centrino 2!

This new mobile platform has some great features, like a multi-core processor, great battery life, new graphics and wireless technologies.

订阅 power management