Linked by Thom Holwerda on Tue 17th Nov 2009 16:13 UTC
Windows Microsoft's Professional Developers Conference is currently under way, and as usual, the technical fellows at Microsoft gave speeches about the deep architecture of Windows - in this case, Windows 7 of course. As it turns out, quite some seriously impressive changes have been made to the very core of Windows - all without breaking a single application. Thanks to BetaNews for summarising this technical talk so well.
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RE: Comment by Gone fishing
by tomcat on Tue 17th Nov 2009 19:00 UTC in reply to "Comment by Gone fishing"
tomcat
Member since:
2006-01-06

So Vista is dog slow because it can't cope with 64 cores or even 4.


Look, Vista isn't the best OS that MS has ever produced, but it does function OK. Saying that "it can't cope with ... even 4" cores is a little over the top. The point of the article is that concurrency was a bigger problem with Vista because of lock contention. That contention has been reduced in Win7 by making locking more fine-grained; thus, making each of the cores more efficient, since they more time doing productive work and less time waiting around for locks to clear. If anything, your Vista box will be more efficient with one or two cores than 64 because of the lower lock contention; as you add cores, you increase contention and, in turn, reduce throughput through the global lock. These changes will primarily make the kernel more scalable (as the article points out).

Edited 2009-11-17 19:10 UTC

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