Questions tagged [superfetch]

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.

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11 votes
2 answers
8k 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 ...
9 votes
5 answers
42k views

Should I enable or disable Prefetch/SuperFetch with my new SSD?

I recently got a new Samsung SSD. It comes with software called "Samsung Magician". Basically it lets you configure things with your new SSD. I'm really confused about Prefetch/SuperFetch ...
4 votes
1 answer
12k 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
1 answer
79 views

is it ok to disable SuperFetch without SSD

Disabling SuperFetch causes Task Manager to report my disk as 100% usage. It's really only at 10%. but I don't have a hard drive SDD and is it ok.
4 votes
1 answer
6k views

Should I be worried about my Prefetch/SuperFetch settings in Windows 7 on a SSD drive?

I just installed Windows 7 on my new OCZ Vertex 2. I heard that Win7 is optimized for use with SSDs and disables the prefetcher if one is detected, but I decided to check anyway. So I looked at ...
9 votes
2 answers
4k 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 ...
-1 votes
1 answer
871 views

Is superfetch good?

One day I noticed that my disk usage was really high at start up and every 15 minutes, it would spike back up to about 99% utilization , causing productivity to decrease. I turned off some programs ...
0 votes
1 answer
698 views

Windows 10 keeps enabling the SysMain service

EDIT: I answered to myself. Read it below this post. I bought a new laptop, MSI GV62 7RC, and installed the latest Win 10 1909 from scratch and fully updated it. I right click This Computer and go ...
4 votes
1 answer
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 ...
0 votes
0 answers
664 views

Prefetch/Superfetch slows the system down. What can be the reason?

I have a Windows 7 x64 home premium (I do know about end of life) Multiple disks and HDD as a system disk, non system SSD disk. I disabled superfetch/prefetch during memory usage troubleshooting and ...
0 votes
2 answers
740 views

Does Windows automatically load files on the desktop? [closed]

I thought I'd heard that Windows 10 automatically loads all files on the desktop to the RAM or at least loads them to the vram on startup, specifically through superfetch. I heard that this can slow ...
2 votes
1 answer
2k 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
0 answers
158 views

Is superfetch configurable?

Superfetch in Windows 10 works out many things and the concerning things for this question are 1) pre-load user's preferred programs for better experience. 2) manage memory compression. Do pre-...
1 vote
0 answers
123 views

How to manually select data/programs for SuperFetch [duplicate]

I've just learned about SuperFetch, and how it automatically loads frequently-used programs into memory so they load quickly on the first use. It explains why my wife's piano sample instrument, which ...
1 vote
1 answer
180 views

Superfetch and Windows File Compression

I've searched around for an answer to this question but haven't been able to find one: If I mark a file for compression using the "Compress contents to save space" option that's in the file's ...
2 votes
0 answers
325 views

Why Superfetch is enabled after restarting computer?

I had disabled the Superfetch from services.msc but it was enabled by itself after restarting the computer. I don't want to use it. How do I disable it completely?
7 votes
3 answers
2k 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 ...
37 votes
2 answers
281k 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 ...
6 votes
2 answers
1k 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 ...
2 votes
2 answers
311 views

Benefits of 64GB+ of ram, partly regarding superfetch

I already have a very fast computer with a SSD, a 700 series GPU, and a Intel Xeon. That said I am considering upgrading my RAM to 64GiB (from 16GiB), possibly more. Im wondering if windows 8/10/...
2 votes
0 answers
1k 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
1 answer
592 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
1 answer
252 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
3 answers
33k 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
0 answers
176 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 ...
10 votes
2 answers
2k 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 ...
1 vote
2 answers
435 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 ...
1 vote
2 answers
1k 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?
8 votes
4 answers
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 ...
0 votes
1 answer
2k 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?
4 votes
1 answer
2k 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? ...