Virtual memory is a technique to provide more address space than the available physical memory. Each process can be given its own virtual memory, and the hardware translates every virtual memory reference to a physical memory address. To accommodate situations when more virtual memory is in use ...

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35 views

PC locks up when RAM oversubscribed

As occasionally happens, my computer locked up today. The screen was frozen, the mouse unresponsive, and there was no response when I pressed Ctrl+Alt+Del and Shift+Ctrl+Esc. In this case it was the ...
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3answers
50 views

Linux server just as RAMdisk

I want to setup an anti-forensic Linux server to protect my users. My aim is to have the Linux distro and everything inside of it running from RAM, never storing anything permanently. It is possible ...
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0answers
8 views

Virtual memory size same Python application on Centos 7 and RH 5.2

Is there a reason why the same python app and code consumes about 90MB of virtual memory size in Red Hat 5.2 32bits python 2.4 and abut 300MB in Centos 7 64 bits with python 2.7? Both app's versions ...
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17 views

Virtual Memory Management in El Capitan (10.11.1)

Recently, I've learned a little about both Windows and Linux approaches to virtual memory management, finding the ability to tune Linux's VMM system for particular purposes particularly interesting. (...
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1answer
73 views

Kernel threads and process virtual address

If the kernel is spawned as threads and resides in the memory then how could the ps command identify them if those are not normal process and i give you more look here: root 2 0 0 févr....
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33 views

Getting “Watch Dog Time out” when starting VMWare Workstation

I had installed VMWare Workstation at my windows 8.1 but whenever I am starting the VMWare Workstation I am getting error "Watch Dog Timeout" could please suggest us what to do now. I have 4 GB of RAM,...
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0answers
17 views

Does virtualization reduce disk trashing?

If a program does a lot of disk trashing (like Chrome), can this be reduced by running it inside a virtual machine? How does a VM host handle disk writes that requested by the virtualized OS?
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33 views

how does a process know it's pages have been swapped out?

Let's assume I have several processes running, a1 and a2. a2 takes so much space that physical pages belonging to a1 start to get swapped out. a1's page table has to be modified to reflect this. how a ...
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1answer
328 views

Change virtual memory size in Windows 10

How do you change the page file size on Windows 10? Note: The last Windows operation system I've used is Windows 7.
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2answers
44 views

Disable win7 harddisk ram for a specific software

Sometimes when you ask matlab to create a very large array, it exceed actual ram and tries to go into harddisk, which slows down the computer so much that it becomes impossible to close matlab, only ...
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0answers
30 views

What's the internal operations for a PC to copy data from an external flash drive to an internal HD?

I was asked about the operations on how data is copied from an external storage to an internal storage in a computer. The info I could find is about how a CPU fetches data from RAM. I don't have ...
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0answers
111 views

Is there a way to set a paging file on a folder-mounted volume in Windows 7?

I have a physical volume mounted to an NTFS folder in Windows 7 that I would like the system to use for paging. Is this possible and, if so, how do I enable it? Thanks in advance.
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165 views

Application to Automatically Free Modified Memory

Is there a Windows application or script that can free modified memory belonging to a given application. I have tried Flush File Cache which is great as a big ol' hammer to clean out all modified ...
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0answers
168 views

Win8.1 Bad Virtual Memory Managment?

For the last couple weeks I'm facing a serious problem with my Win 8.1 32bit (64x CPU) 4G RAM, having "System Managed size" setting for virtual memory (then win allocates 1.8G), minimizing even light ...
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0answers
732 views

Recommended paging file size formula

Is there a formula by which Windows calculates recommended paging file size? (see picture). This is definitely not 1,5 x RAM (this PC has 8 GB or RAM). I need to implement this calculation in my ...
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0answers
67 views

Cannot start site on IIS-Express

Some background: I Am developing a website that uses a BI layer that relays on Matlab. In order to make the logic layer available across my site I am creating it when the site starts (in Global....
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1answer
35 views

what is a word-length boundary?

I'm reading this article: http://en.wikipedia.org/wiki/Struct_%28C_programming_language%29 And it states the following: "The C struct directly corresponds to the Assembly Language data type of the ...
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0answers
195 views

Windows 8 will not boot after set virtual memory to 9999MB

To increase the performance of an ASUS X551M I increased the virtual memory 9999MB. In the past I would determine the max available virtual memory by typing in 9999. I expected to see something like "...
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0answers
31 views

Prevent a closed source chosen process from swapping on Windows [duplicate]

When I run VirtualBox If I don't use VirtualBox for some time and then I come back to using it the virtual machine runs very slowly, obliviously all subsequent operation go enough fast. How I can ...
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0answers
76 views

virtual memory view in windows server 2008

AFAIK, Task Manager in windows 2008 shows the physical memory. I have a program that sums up the FREE physical & FREE virtual memory in MG. How can I confirm it has the right output of this sum? ...
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1answer
116 views

Is CPU cache (L1 - Ln) equal to TLB

If we are talking about CPU cache. Is Ln synonym for saying 'TLB (translation lookaside buffer) of type Ln' or does Ln include also somethin else than just TLB?
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1answer
920 views

Virtual memory (caching) on Windows 8

I have read a bit about the issue, and I understood that the OS constantly pushes memory to the disk, so later, when another application needs a lot of RAM, it allocates that memory to it and "moves" ...
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1answer
2k views

Top command cache vs free memory

When I am running top command (on embedded system with 64 MB RAM) I am getting below description on total memory usage: "Mem: 43468K used, 968K free, 0K shrd, 1280K buff, 21896K cached" It looks ...
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1answer
201 views

Mouse disconnecting and programs not closing and more

My mouse keeps disconnecting and reconnecting as well as my usb modem. My programs don't always close when i tell them to and even when I use task manager. T hey are also using all my RAM for a lot ...
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1answer
2k views

How do I know how much swap is used on Windows 7?

Apparently, as per Commit charge is 100% full but physical memory is just 60% when using no page file and http://brandonlive.com/2010/02/21/measuring-memory-usage-in-windows-7/, the Commit numbers in ...
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2answers
426 views

Why does Windows 7 intentionally make itself slow?

I've encountered this oddity with 5 different machines, running different versions of Windows 7. I've seen the same issue in Home Premium, Professional and Ultimate. The System Allocates Less Virtual ...
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1answer
72 views

Allocation of memory to guest os [closed]

I have 6gb memory on my host OS (Windows 7 64bit), I am planning to install Oracle Linux as guest using Virtual Box. How much memory should I allocate to guest OS? In guest OS I am planning to ...
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1answer
31 views

Windows 7: Set Physical Memory Limit [closed]

Where can we set the maximum physical memory an Application/Process can use. I am not trying set a cap on Maximum memory, rather the amount allowed on physical memory before switching to virtual ...
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1answer
1k views

How can I use a flash drive to increase my virtual memory?

My computer has 8gb of physical memory. I'm running some memory intensive processes that quickly eat up that 8gb. When the physical memory runs out, it starts using the virtual memory and I see ...
-1
votes
1answer
545 views

Will a swap file not slow down the system so much if a Solid State Drive is used?

When RAM runs out on a computer, the swap file is used, and then the system can become quite slow. But if the notebook or desktop is using SSD nowadays, will it be less of a concern? (Updated Oct ...
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votes
2answers
618 views

Why does the Windows Task Manager never show more than 80% memory used?

In the Windows Task Manager I have never seen the memory usage close to 100%. If physical memory is never depleted, how come computers have virtual memory? I realize many years ago maybe computers did ...
-1
votes
0answers
16 views

Virtual Machine RAM Allocation

I want to know if I can use a 32 bit Host OS to run Virtual Machines (VM) using the remaining RAM installed on the host environment. I am specifically interested in VirtualBox, Windows 10 32 bit, and ...
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votes
3answers
71 views

What size for Virtual Memory [duplicate]

I am a total novice when it comes to hardware settings. I am using Windows Server 2012 64 Bit. It has 12GB RAM. I have a C and virtual D drive. The build is i5-2400 3.10 GHz. There is no current ...
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1answer
113 views

What is the Optimal Virtual Memory Size For 8 GB RAM | WIN 10?

I would like to ask experts that What is the optimal Virtual Memory Size For 8 GB RAM | WIN 10 and how you calculate? I know the system says 1906 MB is recommended but is it enough or I should set ...
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2answers
53 views

Is data from a usb device stored in ram while getting same ( etc explorer listing items )?

Does it go first in ram then to software? Or does some programs like Windows explorer have "VIP" permission cause they are child of OS, for direct access? EDIT Does it possible to make kernel, to ...