Questions tagged [prefetch]

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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 ...
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39 views

How does RAM keep up with the CPU?

I am trying to understand how RAM manages to keep up with the CPU. Here is a breakdown of why I'm under the impression it wouldn't: The clock speeds of modern CPUs are often greater than the clock ...
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1answer
941 views

How to get the real cached/prefetched memory usage in Linux?

I do face the same hangs like this post: https://askubuntu.com/questions/41778/computer-freezing-on-almost-full-ram-possibly-disk-cache-problem To sums up: looks like prefetched/cached/paged RAM ...
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0answers
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 ...
9
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2answers
6k 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 ...
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0answers
6k views

Why do I need disable DNS prefetching / network prediction in Firefox, Chrome for them to be usable?

I've installed the latest Firefox and Chrome on my Windows 7 64 PC (using a wifi connection to my ADSL2+ router) recently. In both cases loading various commonly visited sites such as wikipedia, ...
2
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1answer
1k 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 ...
2
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1answer
263 views

Have Ubuntu server prefetch and store mail for a Windows workstation?

I'd like to have my Ubuntu server (that also acts as a file and webserver) pre-fetch my mail from varying mail-accounts and have my Windows workstation fetch it from this Ubuntu server, in stead of ...
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0answers
928 views

Unable to disable the hardware prefetcher

I am trying to disable the hardware prefetcher to run some memory benchmarks on an Intel core i5 2500. The problem is that there is no option whatsoever in my BIOS to enable or disable the prefetcher. ...
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1answer
2k views

Does Windows 8 still using Windows 7's boot optimization prefetcher technique?

Windows Vista and Windows 7 have a self-optimizing feature—called the boot prefetcher—that uses the disk I/O pattern from the previous boots to predict the I/O pattern of the next boot. To improve ...
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1answer
67 views

How different instruction types are defined in AMD microprocessors to identify DirectPath vs VectorPath flows?

In AMD 10h architecture like Opteron the prefetched instructions after being aligned are separated into 2 flows: DirectPath (or Fastpath) and VectorPath (Microcode engine). Later these flows are ...
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1answer
10k views

SSD and monitoring writing to C:\Windows\Prefetch\ReadyBoot\ReadyBoot.etl

I have been monitoring write activity to the following file. C:\Windows\Prefetch\ReadyBoot\ReadyBoot.etl Since I have Windows 7 installed on an SSD, that there would not be any readyboost activity. ...
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2answers
8k views

Does the /prefetch:1 argument works for any application?

I found some information about the /prefetch:1 argument on some applications, such as Microsoft Word and Excel. You add this argument to a shortcut that points to these apps. If I add that to the ...