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Windows 7: Virtual Memory

16 Jan 2011   #11
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

You can always set the hibernation file back on, with this command: powercfg -h on


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16 Jan 2011   #12
2010MegaScooter

Windows 7 Home Premium 64 bit SP1
 
 

Quote   Quote: Originally Posted by whs View Post
You can always set the hibernation file back on, with this command: powercfg -h on
Thanks.
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16 Jan 2011   #13
cluberti

Windows 10 Pro x64
 
 

If you want to know fairly close to real-time numbers how your system performs with different settings, consider using perfmon to make this determination while tracing your system under normal usage. I personally keep my paging file small (512MB) with 8+GB of RAM on an x64 Win7 or 2008 R2 machine, and only change it back to RAM+50MB if I need to gather a crash dump. There are exceptions to this rule, but most of those involve SQL or Exchange running on 2008 R2, and not the Win7 client at all. I also set DisablePagingExecutive on x64 to 1 as well, as this can affect kernel debugging (and if you get to a point in resource exhaustion where your Kernel executive needs to be paged, you've already lost the battle anyway - this would not be your problem, and bugchecking would be the least of your problems).
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16 Jan 2011   #14
Frank1

Desk Top with Win 7 Home Premium 64 bit and Lap Top with Windows 8.1 Pro 64 bit
 
 

Does a computer with 8GB of RAM really need a pagefile?? With RAM as inexpensive as it is, it makes me wonder if MS will someday do away with the page file.
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16 Jan 2011   #15
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by Frank1 View Post
Does a computer with 8GB of RAM really need a pagefile?? With RAM as inexpensive as it is, it makes me wonder if MS will someday do away with the page file.
Yes it does. For some odd reason some program generate page faults regardless how much free RAM you have. I noticed that e.g. with the AV programs.
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16 Jan 2011   #16
cluberti

Windows 10 Pro x64
 
 

Yes, but hard faults or soft? Only a hard fault requires a read from disk - and even then, a hard fault does not mean the read from disk was from the paging file (it could have been serviced from the file on disk that was requested). In general, though, it is good to have a paging file to allow the kernel and paged pool to be allowed to work properly under load, or to gather at least a kernel dump on a crash. In general, more than 512MB - 1GB would not be required though. The links I posted, if followed, should give you an idea of what windows is doing when set to "system managed" and thus what sorts of settings you may need if you want to configure it manually.
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