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#11
I agree,, turning off superfetch is not going to improve anything.
Actually I was more worried about the increased load on the hard disk than anything else. I've been using this for a couple of weeks now and it's still pretty busy... although (if you read my other big thread) I'm slowly getting it figured out and quieting things down... At least the main system is going into standby now.
It may not impact me or my active programs... but is it really necessary?Second the data cached in RAM is never paged out of RAM. If an application requires the space occupied by the cache it is simply overwriting with zero overhead. There is no speed-up or getting a smoother system when you turn off SuperFetch, all you get is wasted RAM.
Windows Administration: Inside the Windows Vista Kernel: Part 2
Whenever memory becomes free-for example, when an application exits or releases memory-SuperFetch asks the Memory Manager to fetch data and code that was recently evicted. This is done at a rate of a few pages per second with Very Low priority I/Os so that the preloading does not impact the user or other active applications.
If it's like predictive disk caching (a la win95) I'm betting the number of misses renders it pointless.
But thanks to you and Whs for the extra info... As I said I'm still learning about Win 7, so your info does not fall on deaf ears.
Hi all,
Thanks so much for all this useful info. Really helps.
However I'm still lost as to the 'Free' mem being very low while 'Available' very high.
If I was to load another heavy application like a CAD/3D package would I see Win7 crash given Free is only at 12mb? I'm still a bit confused as the Free/Available relationship.
Again, thanks to everyone who is posting in this thread. Very helpful!
Nick.
Yeah I just dide some tests and have been watching the values. I found some good articles on it as well...
Windows Administration: Inside the Windows Vista Kernel: Part 2
The best I can understand this now is it displays physical mem that hasn't been assigned to anything.
Available = Standby (SuperFetch) + the Free
Cached = Standby + Modified
Thank you all for your info. Very helpful! cheers