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Wonder? Pagefile? - Page 4

post #31 of 33
Quote:
Originally Posted by sixor View Post
sorry but i can´t find the good thing about pagefile??

as i said running without pagefile since xp, and i only create one pagefile of 50mb for dumb games like the ones i said before, once i finish the game, pagefile off

those 2-3-4gb could be used for another things

microsoft just use pagefile as default for noob with tiny ram and noobs in general in case someone needs more ram than physical
Yeah, I used to be like this too.
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It's a computer!
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post #32 of 33
http://lifehacker.com/#!5426041/unde...dnt-disable-it

Lifehacker's not really a windows blog, but they rarely give bad advice. For a more in depth view check out the article they link--

http://blogs.technet.com/b/markrussi...7/3155406.aspx

TL;DR version:
If you think instant alt-tabbing (which is damn near instant with your page file on an SSD anyway) is worth sacrificing system stability, then by all means disable your page file.

Edit: found another good answer--

Quote:
Many people seem to assume that Windows pushes data into the pagefile on demand. EG: something wants a lot of memory, and there is not enough RAM to fill the need, so Windows begins madly writing data from RAM to disk at this last minute, so that it can free up RAM for the new demands.

This is incorrect. There's more going on under the hood. Generally speaking, Windows maintains a backing store, meaning that it wants to see everything that's in memory also on the disk somewhere. Now, when something comes along and demands a lot of memory, Windows can clear RAM very quickly, because that data is already on disk, ready to be paged back into RAM if it is called for. So it can be said that much of what's in pagefile is also in RAM; the data was preemptively placed in pagefile to speed up new memory allocation demands.

Describing the specific mechanisms involved would take many pages (see chapter 7 of Windows Internals, and note that a new edition will soon be available), but there are a few nice things to note. First, much of what's in RAM is intrinsically already on the disk - program code fetched from an executable file or a DLL for example. So this doesn't need to be written to the pagefile; Windows can simply keep track of where the bits were originally fetched from. Second, Windows keeps track of which data in RAM is most frequently used, and so clears from RAM that data which has gone longest without being accessed.

Removing pagefile entirely can cause more disk thrashing. Imagine a simple scenario where some app launches and demands 80% of existing RAM. This would force current executable code out of RAM - possibly even OS code. Now every time those other apps - or the OS itself (!!) need access to that data, the OS must page them in from backing store on disk, leading to much thrashing. Because without pagefile to serve as backing store for transient data, the only things that can be paged are executables and DLLs which had inherent backing stores to start with.

There are of course many resource/utilization scenarios. It is not impossible that you have one of the scenarios under which there would be no adverse effects from removing pagefile, but these are the minority. In most cases, removing or reducing pagefile will lead to reduced performance under peak-resource-utilization scenarios.
http://serverfault.com/questions/236...ne/23684#23684
Edited by Traches - 4/24/11 at 11:08pm
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Kathis
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post #33 of 33
Thread Starter 
Thank you trachs
Awesome threads
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