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Windows 7: Continuing our discussion on performance

15 Dec 2008   #1

 
Continuing our discussion on performance

[quote]We've talked some about performance in this blog and recently many folks have been blogging and writing about the topic as well. We thought it would be a good time to offer some more behind the scenes views on how we have been working on and thinking about performance because it such an interesting topic for the folks reading this blog. Of course I've been using some pretty low-powered machines lately so performance is top of mind for me as well. But for fun I am writing this on my early holiday present--my new home machine is a 64-bit all-in-one desktop machine with a quad core CPU, discrete graphics, 8GB of memory, and hardware RAID all running a pretty new build of Windows 7 upgraded as soon as I finished the out of box experience. Michael Fortin and I authored this post. --Steven

Our beta isn’t even out the door yet and many are already dusting off their benchmarks and giving them a whirl. As a reminder, we are encouraging folks to hold on benchmarking our pre-production builds. Yet we’ve come to expect it will happen, and we realize it will lead many to conclude one thing or another, and at the same time we appreciate those of you who take the time to remind folks of the pre-ship status of the code. Nevertheless we’re happy that many are seeing good results thus far. We're not yet as happy as we believe we will be when we finish the product as we continue to work on all the fundamental capabilities of Windows 7 as well as all the new features folks are excited about.

Writing about performance in this blog is nearly as tricky as measuring it. As we've seen directional statements are taken further than we might intend and at the same time there are seemingly infinite ways to measure performance and just as many ways to perceive the same data. Ultimately, performance is something each individual feels is right--whether than means adequate or stellar might vary scenario to scenario, individual to individual. Some of the mail we've received has been clear about performance:
  • Boot-very very fast in all applications ( open-load applications) especially so many simultaneously!!!!! Hence, massive multicore ( quad-octa core cpu) , gpgpu for all!!!!!!!!!!!!
  • This is right time to do this properly, the users want speed, we'll give them speed.
  • i want to be able to run windows 7 extremely fast and still look good graphically on a asus aspire one netbook with these specs-1.5 ghz intel atom processor (single core) 1gb of ram
  • I hope that in addition to improvements in the gui and heart (I hope massive multicore + 64-bit + Directx 11 ..extreme performance, etc) for windows 7, modified the feature Flip 3d In Windows 7!!!!! Try to make a Flip 3D feature, really efficient and sensible in windows 7.
  • With regard to the performance thing, could you look at ways to reduce the penalty of having a lot of fonts installed.
  • From performance, boot up, explorer speed and UI experience , I hope the next version of windows delivers something new and innovating. I was playing with the new UI on the HP TouchPC and I have to say they did a great 1.0 job on the touch interface controls.
  • I do keep my fingers crossed for Windows 7 to be dramatically better in its performance than Windows Vista.
  • The biggest feature I see a lot of people wanting is performance.
You can also see through some of these quotes that performance means something different to different people. As user-interface folks know, perceived performance and actual performance can often be different things. I [Steven] remember when I was writing a portion of the Windows UI for Visual C++ and when I benchmarked against Borland C++ at the time, we were definitely faster (measured by seconds). However the reviews consistently mentioned Borland as being faster and providing feedback in the form of counts of lines compiled flying by. So I coded up a line count display that flashed a lot of numbers at you while compiling (literally flashy so it looked like it couldn't keep up). In clock times it actually consumed a non-zero amount of time so we got "slower" but the reviewers then started giving us credit for being faster. So in this case slower actually got faster.

There's another story from the past that is the flip side of this which is the scrolling speed in Microsoft Word for DOS (and also Excel for Windows--same dynamic). BillG always pushed hard on visible performance in the "early" days and scrolling speed was one of those things that never seemed to be fast enough. Well clever folks worked hard on the problem and subsequently made scrolling too fast--literally to the point that we had to slow it down so you didn't always end up going from page 1 to the end of the document just because you hold down the page down key. It is great to be fast, but sometimes there is "too much speed".


We have seen the feedback about what to turn off or adjust for better performance. In many ways what we're seeing are folks hoping to find the things that cause the performance to be less than they would like. I had an email conversation with someone recently trying to pinpoint the performance issues on a new laptop. Just by talking through it became clear the laptop was pretty "clean" (~40 processes, half the 1GB of RAM free,

My System SpecsSystem Spec
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15 Dec 2008   #2

Windows 7 Ultimate Vista Ultimate x64
 
 

Thanks Dmex, it was a good read and it shows they are listening to what people want.
My System SpecsSystem Spec
16 Dec 2008   #3
Microsoft MVP

Vista and now 7 in 32 and 64 bit.
 
 

The blog section in Microsoft's Engineering pages, from which this was copied, are well worth reading through. I think I gave the link before in another thread but:
Engineering Windows 7 : Continuing our discussion on performance

The series of articles could help users to understand how 7 is evolving, and the thinking behind some changes, for right or wrong. Here is the one, for example, on the new taskbar and quick launch, which brings quite a lot of correspondence to sites such as this:
http://blogs.msdn.com/e7/archive/200...e-taskbar.aspx

Thanks also to the co workers on this excellent project, Jon Devaan, who shares the chair with Steven Sinofsky, and Michael Fortin, who apparently heads the team who have brought the bootup, and general peformance figures down to such remarkable figures. (But not on my poor computer - darn)
My System SpecsSystem Spec
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16 Dec 2008   #4

Windows 7 Ultimate x64
 
 

Thanks, Steven. Great read.
My System SpecsSystem Spec
16 Dec 2008   #5

Vista Ult 64 bit Seven Ult RTM x64
 
 

Thanks, Steven. Enjoyed that.

Gary
My System SpecsSystem Spec
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