Category Archives: MS Windows

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High System Interrupts CPU Usage in Windows 8

This past period I re-loaded my Desktop PC to use one of the modern APU from AMD. I went from a powerful Quad-Core system to an APU On-board low power system. I did this out of a conscious choice to start limiting my impact on carbon emission and of course lower my utility bills. I am mostly in browse or Coding mode most of the time, I don’t game at all, so my need for a monster powered system of decades ago, is no more responsible in this green age. I mean, my desktop is like 24hr alive, so this is really necessary.

After the re-load, I was faced with two issues immediately. Video Driver issues which I wouldn’t bother you with in this article. I was eventually able to fix it by double installation of Win8. Simply to refresh the system.

The second and persistent problem was the high CPU usage of the System Interrupts.

Mine was running on constant average of 20% which as a Windows expert I know it means trouble in paradise. In the IDE HDD years, you know this means a HDD is using low level mode instead of the DMA mode. But these days, all HDDs use DMA mode, just to be sure, I wanted to check, yup, all my HDDs are on UDMA mode. So what could be causing this headache. High Interrupt use means warm CPU and waste of energy.

I scoured the internet for a solution, none are relevant to me. Now there is no tool that I know of that can show you Interrupt CPU usage and from where the break requests are coming from. So I decided something that years of experience has taught me: Defragment your HDD when having Perf issues.

Well, it worked like a charm, I defragged the System Drive fully, offline fully if you know what I mean. The result is what you see above. Interrupts now averages 0.5%.

So there you go guys, maintain your spinning HDDs, it helps. Of course this solution will not/should not apply to SSDs, but unfortunately, those are also notorious to frags. But you should let Windows maintain SSDs as recommended by Microsoft. As you know they have limited Write life compared to traditional HDDs.

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Windows Fundamentals For Legacy PCs

 

In this bonus episode, I take a look at Windows Fundamentals For Legacy PCs (“FLP”), a little-known official Microsoft modification of Windows XP, designed for businesses still using hardware designed for Windows 9x to be able to run a more modern, safe and stable OS on their PCs. I end with a little fun trying to run the system on 64MB and 32MB RAM to see what happens. Continue reading

Windows XP Build 2481: “The Homestead Run”

In this video I wrap up our tour of the development of Windows XP with build number 2481, a pre-RTM build that heralded the completion of the GUI and out-of-box hardware compatibility for Windows XP, and was handed out to testers on 1st June 2001. Over the next few months, compiled builds were virtually identical and their primary function was to root out any last minute bugs that might wreak havoc on the projected release date of 25th October 2001. Thankfully, XP shipped as planned on this date, and firmly took its place in history as one of the most well-loved Windows operating systems. Continue reading

Windows XP Build 2475: “XP Finds Its Identity”

In this video I demonstrate the setup and UI of Windows Whistler build 2475 – one of the first builds of Windows Whistler to identify itself by the operating system’s recently-announced official name, “Windows XP”. This build was released to testers on 24th May 2001. Continue reading

Windows XP Build 2428: “Welcome To Windows, Luna”

In this video I demonstrate the setup and UI of Windows Whistler build 2428 (beta 2) which would eventually evolve into Windows XP. This build was shown to reviewers on 9th February 2001 – the same day that Microsoft announced the official name of Whistler – “Windows XP”. Continue reading

Windows XP Build 2419: “Hello World!”

In this video I demonstrate the setup and UI of Windows Whistler build 2419 – the third post-Beta 1 build of Whistler – which would eventually evolve into Windows XP. This build was first released to testers on 23rd January 2001 and was one of four post-Beta 1, pre-Beta 2 builds. Continue reading

Windows XP Build 2416: “Merlin’s Stage Entrance”

In this video I demonstrate the setup and UI of Windows Whistler build 2416 – the second post-Beta 1 build of Whistler – which would eventually evolve into Windows XP. This build was first released to testers on 16th January 2001 and was one of four post-Beta 1, pre-Beta 2 builds. Continue reading

Windows XP Build 2410: “Chartreuse Mongoose”

In this video I demonstrate the setup and UI of Windows Whistler build 2410 – the first post-Beta 1 build of Whistler – which would eventually evolve into Windows XP. This build was first released to testers on 4th January 2001 and was one of four post-Beta 1, pre-Beta 2 builds. Continue reading

Windows XP Build 2250: “…And The Ghosts Of Neptune”

We continue our investigation into the development of Windows XP with Windows Codename “Whistler” build 2250. This build of “Whistler” was compiled on the 28th June 2000 and was shown at the Professional Developers Conference 2000. This makes it the first “Whistler” build to be shared with developers outside of Microsoft. But 6 months on from Neptune, are we truly able to say goodbye? Continue reading

Windows XP Build 2223: “Goodbye Neptune, Hello Whistler”

Following the cancellation of Neptune, Microsoft put together a team of developers to start work on Whistler. This build is one of the first glimpses into their earliest developments. The long and short of it is that this equates to “not much”, but even the world’s (possibly) most-loved operating system had to start out from somewhere…mainly, Windows 2000! Continue reading