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Disable Core Parking Windows 7 Tweak may improve performance !

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29.06.2000
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Kod mene nisam primetio, a nisam ni znao za ovakav problem. Ipak, posto sam nasao ovo na netu, da podelim sa ostalima.
http://ultimatecomputers.net/forum/viewtopic.php?f=7&t=3644&start=0

Who is affected
It only applies to Windows 7 X64 and X32 and only in systems using more than 2 physicial CPU's and/or more than 2 "logical" cores - ie: Core i7's.

The Problem
See here for a bit of info / explanation / more info about CPU Core Parking - http://blogs.technet.com/askperf/archiv ... scing.aspx

Core Parking is a feature of Windows 7 that is causing rare performance problems. I don't notice it on my home i7 / Win7 system but some people are getting microstutters and odd behavior in certain programs. Without the following " tweak" you may see CPU spiking in your programs and Windows Task Manager - some CPU cores will be "turned off" / "parked" depending on load and they will be dynamically turned on or off and dynamically loaded up or down as the system deems necessary - the scope for glitchs / pops / clicks / droputs etc.... in such an environment is simply enormous. To the best of my knowledge, there is no known "switch" to turn it off - no utility I am aware of to "tweak" it off.

The Fix
- Go to Regedit
- Select Edit > Find... and find this key: " 0cc5b647-c1df-4637-891a-dec35c318583 "
- Within this key, there is a value called: " ValueMax " This value represents the % number of cores the system will park
- Change the value of " ValueMax" to 0 so that, it matches " ValueMin "
- You will have to find the key a few times and repeat the process for each time it is found - the number of instances will depend on the number of power profiles in your system. To do this go back up to Edit > Find Next. (I had 3 instances of this key in my registry.)
- Do a full shutdown and power-off and cold-re-start.

The Result
Better load balancing across all you CPU cores - no spiking - in Windows 7 Task Manager

http://ultimatecomputers.net/forum/download/file.php?id=814&t=1&sid=e0453d9baabd31a09bae3a33b32c95ff

http://ultimatecomputers.net/forum/download/file.php?id=815&t=1&sid=e0453d9baabd31a09bae3a33b32c95ff
 
Meni se par puta, ali jako jako retko, ucinilo da sam primetio kratkotrajne spajkove na nekim jezgrima, dok su druga bila neaktivna. Normalna situacije je, inace, da sve sto mi stalno radi bude multicore.
Ovo je stvarno redak tweak i lagano moze da se desi da je to bio uzrok spajkova i stucanja.
Promenio sam vrednosti, pa cu pratiti sta se desava.

Hvala mnogo na tweaku :)
 
Posle sat dva rada u novom load balance setapu mogu samo da kazem da je ovaj tweak fenomenalan. Ja imam specifican setap masine i poslova koje teram, ne mora da znaci da ce svako imati ovakav boljitak od ovog tweaka, ali meni je takvo sjajno osvezenje da nije normalno. Za iste poslove za koje je CPU load bio izmedju 9 i 12%, sada imam brojke od 4-8, uz jako retke skokove do 10%. I ne samo to, ranije je bilo ocigledno da neka jezgra stalno rade vise od ostalih. Sada to nije slucaj uopste. Potpuno sjajno.

Tweak godine 2011!!!

Kazi adresu - saljem karton Plzenskog piva :)
Hvala najlepse jos jednom, Boro.
 
Zanima me da li treba promeniti i vrednost ValueIncrement (def =1) na 0 posto je ValueMin i ValueMax takodje 0, tj. ista (ako se primeni ovaj tweak).
 

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Ja nisam menjao, nema ni logike - taj inkrement ne igra vise nikakvu ulogu.
 
Sad sam malo probao ovo i deluje da je balans loada izmedju jezgara bolji, recimo prilikom surfovanja sa FF odredjeni sajtovi koji nisu optimizovani ili imaju brdo flesh animacija ne "seckaju" vise. Izgleda da je tweak odlican. :)
 
Vec je neko mozda i u Windows 7 temi napisao o ovome tweak-u. Secam se da sam jos pre par meseci ovo odradio po nekom uputstvu odavde, medjutim reinstalirao se i sistem u medjuvremenu tako da me je ovo podsetilo da ponovim :)
 
Da li vredi ovo odraditi na Q9550 i Corei3 380M?
 
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