SuperFetch is a technology that pre-loads commonly used applications into memory to reduce their load times. It is based on the "prefetcher" function in Windows XP.

learn more… | top users | synonyms

0
votes
0answers
41 views

Why Superfetch and Prefetch on Windows 8.1 cause high disk activity on Pagefile disk?

I have an SSD running Windows 8.1 Pro x64, which only has 128GB. To leave it a little more free, I have left only 200MB of Pagefile in it. I have another HDD which has 1TB. In it, I made a new ...
1
vote
1answer
68 views

What do these commands do exactly?

So, I was having some trouble with my svchost taking up some of my memory. After poking around I discovered it was my SuperFetch. My svchost is about 259k, after disabling Superfecthj it dropped to ...
-3
votes
1answer
118 views

Windows 7 starts with 1.5gb of ram missing, hindering minecraft memory usage

I tried to search for an answer, but couldn't find one. On my computer there's a lot of ram non-free and not shown in task manager under processes. Minecraft requires a lot of memory. I have 8 ...
3
votes
1answer
5k views

Any solid reason to turn off Superfetch and Prefetch for SSD?

Microsoft or other places suggest to turn off Superfetch if you use SSD, like this one: http://support.microsoft.com/kb/2727880 But with Superfetch and Prefetch: There isn't any access write to SSD ...
1
vote
1answer
361 views

Force Windows to cache executables without running them?

Is there a way to force Windows to pre-load certain EXE/DLL binaries into its prefetch/superfetch cache as if they had been executed? I have a particular application that loads pretty slowly on first ...
1
vote
0answers
108 views

Is there a way to determine the Superfetch cache hit rate?

I have several large analysis jobs in parallel that run over the same couple hundred gigabytes of data that are i/o bound. When these run the Superfetch cache quickly consumes all available free ...
8
votes
2answers
998 views

What is the rationale behind disabling Superfetch on SSD systems?

I understand that Superfetch was designed to use RAM for caching with HDDs in mind due to their high latencies, something that SSDs don't have. However, I don't understand how an SSD could outperform ...
17
votes
2answers
99k views

What is svchost.exe (LocalSystemNetworkRestricted) when I see it in the Resource Monitor in Windows vista and why is it slowing me down?

Sometimes, when my computer is frozen and just about unusable, it seems that the cause is some heavy background processing. Sometimes, I can catch who is using all my disk-bandwidth using Resource ...
4
votes
3answers
21k views

4GB to 8GB RAM, what performance increase?

I am wondering whether it is worth upgrading from 4 GB to 8 GB of RAM. I know the question has been asked many times, but I can't transpose that to my case. I'm using Windows 7 64-bit. I did a test ...
1
vote
2answers
335 views

SuperFetch vs. SRT. Both, or just SuperFetch?

I've looked around and haven't found an answer to my specific scenario. Building a new desktop, using the Z68 chipset, 1.5 TB Caviar Black HDD, 60 GB Agility 3 SSD. I have about 200 GB of ...
4
votes
1answer
2k views

Windows SuperFetch service for SSD + HDD mixed systems

The guides are floating around the web stating that Windows 7 automatically disables SuperFetch if it finds that disk is SSD. However, my SSD is only 60GB, and I still have 3 TB of storage on HDDs ...
1
vote
1answer
6k views

Is there a way to reset SuperFetch?

I recently doubled the amount of RAM in a Windows 7 box and I want to ensure I'm taking full advantage of it. Is there a way to reset SuperFetch?
0
votes
2answers
604 views

How can I disable SuperFetch when running Windows 7 on battery power?

Is there a way I can disable SuperFetch whenever my Windows 7 laptop is running on battery power, and reenable it when the laptop is plugged in to AC power?
1
vote
0answers
518 views

What's the disadvantage/catch of SuperFetch? [closed]

I've been seeing all praises for the application called SuperFetch that makes launching and using applications faster, and never slower, which is definitely beneficial for someone who uses the ...
8
votes
2answers
3k views

How can I make Windows 7 ReadyBoost persistent?

Is there a way to make Windows 7 to keep the ReadyBoost cache across a reboot (and not encrypt it or keep the encryption key across the reboot) - so that ReadyBoost could actually boost the boot up ...
7
votes
3answers
1k views

Intel SRT vs Superfetch

I'm about to retire my old computer, and replace it with a new Sandy Bridge build. I pretty much settled for a Z68 motherboard, but I couldn't decide if I will get solid-state drive (for use with ...
5
votes
1answer
772 views

How can I keep a file in Windows 7's cache?

Sometimes you know better than Windows what files will be re-used later. Suppose you have 8GB of memory, and you use the same 1GB file every hour in an I/O-bound application (which takes 1 second to ...
0
votes
1answer
1k views

What's the difference between Readyboost+Suprefetch vs Pagefile (or Linux Swap) on a flash drive?

What's the major difference between new technologies and placing pagefile on a separate flash drive? It seems to me that new technologies are just wrappers. Am I wrong?
1
vote
1answer
1k views

Loading specific application using SuperFetch in Windows 7

SuperFetch feature loads most frequently used applications into RAM to make faster loading time for those apps. Is there any way to tell SuperFetch service to load specific apps into RAM in Windows 7? ...
5
votes
4answers
2k views

Is SSD better than Superfetch?

So I'm building a new machine... Which configuration would give me a faster machine: 8 Gb of RAM An SSD, but with 4 Gb of ram Should I add more memory (8 Gb instead of 4Gb) to better make use of ...