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WinFix: i7 owners Win7 by default is crippling our CPU's - Page 10

post #91 of 96
this helps my FX4100 a good amount, actually.
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Beast From HELL
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post #92 of 96
Re-living this thread for BF4 sakes.

http://www.youtube.com/watch?v=QkfIFP0g2xY
http://www.coderbag.com/Programming-C/Disable-CPU-Core-Parking-Utility
post #93 of 96
So far I see zero evidence that core parking hurts anything. When you utilize the CPUs, the parked cores will be unparked immediately. I did a test with Prime 95 test spawning two worker processes, and this still resulted in all cores being unparked. In fact, you don't want to keep all cores unparked all the time. The worst case scenario is when you need only two threads and they both get assigned to the two logical cores of the same execution core (do you not see the big problem with this?), even though you want a real execution unit per thread. My understanding is that Windows effectively parks only the "logical" cores, leaving real execution cores operational.
post #94 of 96
Hi, and thanks for the guy that explained cores and threads and how there MIGHT be an issue with the i7, and for the gamers confirming this resolved issues with stuttering performance, and big thanks for the how to add cpu parking control to control panel thumb.gif

I've landed here because my performance sucks - boot time is ok because pretty much nothing is loading (fresh build and configuring for best performance, disabling all superfluous functions), but even flash games stutter in chrome!

I have a dell xps l502x with 8gb of ram. My brother shows up the other day with his new toshiba hermann, and ok his (radeon?) graphics outperforms my nvidia geforce 540m, but we're playing flash games.

Every time I check my CPU performance half are parked, and ok maybe that's intelligent by design, and they are used only when needed... but I've yet to see them in use.

I don't know what (if any) correlation there is between fan noise and parking / other CPU config settings, but for now I'm happy to learn of the reg fix to add that option... and the parkcontrol app looks like a well implemented solution...

If anyone has a suggestion of some computational-test, or memtest (or other) instructions on how to see if CPU parking is affecting your performance, that'd be great.

Approaching with caution (so many of these *tweaks* are just hot air - tried this to try and make use of all 8Gb of RAM (usually 7.9 reportedly available?!)... and it went down to 6.5 available...

If I get any results (ie data, preferably of the hard variety) I'll post.

Thanks again!
post #95 of 96
Quote:
Originally Posted by ZAKOH View Post

So far I see zero evidence that core parking hurts anything. When you utilize the CPUs, the parked cores will be unparked immediately. I did a test with Prime 95 test spawning two worker processes, and this still resulted in all cores being unparked. In fact, you don't want to keep all cores unparked all the time. The worst case scenario is when you need only two threads and they both get assigned to the two logical cores of the same execution core (do you not see the big problem with this?), even though you want a real execution unit per thread. My understanding is that Windows effectively parks only the "logical" cores, leaving real execution cores operational.

re my last post, this is what prompted me to contribute....


Can you describe how to utilize the CPU?! (hypothesis A: if CPU is being stressed, all cores should be unparked?)

ta
post #96 of 96
After reading Matt's extensive comments (#33) I have to say I agree with Zako', there's much more to it than meets the eye.

has anyone had any experiences successfully moderating cpu parking when poor performance is being observed ? details
(software in use and function being performed, intervention particulars like parkcontrol settings, tangible results...)

parking this for now rolleyes.gif
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