Questions tagged [virtual-memory]

Virtual memory is a method where each process is given its own address space (virtual memory), and the hardware translates every VM reference to a physical memory address. Originally VM was used to provide more address space than the available physical memory. To accommodate situations when more virtual memory is in use than physical memory, a storage device such as HDD can be used to "swap out" data and later "swap (back) in" as needed.

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Can small amount of tablet's RAM be compensated by virtual memory

If you have a 1 GB ram Windows 7/8/10 tablet then I assume there will be poor performance. Could it be improved by increasing the page file (virtual memory) size? Perhaps it's not so important to get ...
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Out of memory error - Commit charge peaks

I'm facing an "out of memory" issue, it usually happens when the browser is open (any browser). I checked the resource monitor and the commit charge goes to 100% when the issue happens. ...
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calculating memory used by "ext4_inode_cache" from /proc/slabinfo?

On Linux I have two ways to get the memory used by ext4_inode_cache. First is using the slabtop command which gives me "CACHE SIZE" information too: # slabtop -o -s c | grep -E '(...
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Why did Windows put my pagefile on a different drive, and can I move it back?

I have a Windows 2012 server with a boot drive mounted as drive letter C, and a very large disk array (120 TB) attached and mounted as a single volume as drive letter F. I happened to notice that ...
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How virtual memory and page file is related?

We know that CPU produces logical addresses also known as virtual addresses while a program is running. Then, those virtual addresses are get translated into physical addresses by Memory Management ...
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How to monitor virtual memory in windows 11?

I want to see how much virtual memory I am using, and have watched multiple tutorials, but can't seem to find any on windows 11. I have tried using performance-monitor, but I am unable to find virtual ...
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Pagefile keeps growing, but never fully utilised

My laptop runs Windows 10 Pro and has a 512GB SSD (~45GB free) and 16GB RAM. My page file is set to 'automatically managed'. Recently I've found that my pagefile keeps growing to the point where it ...
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Virtual Memory Organization

I have a question pertaining to virtual memory. In the description we always tend to show Heap growing from Low Address to High Address, and Stack in the other direction e.g. Question: Is this just ...
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How to stop certain Windows games from disabling/bypassing disk read caching? A probable DRM issue

It's now the second game that I've been playing recently which for some reasons makes Windows not use disk cache. I have 64GB of RAM. The game itself eats around 7GB, 2GB are left for the OS, which ...
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Windows apps crashes randomly (diagnosis)

Recently I am experiencing random crashes on windows and seemingly not related to specific apps and without a blue-screen, some give strange errors and seem like OS-related issues. sometimes I see ...
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How much word-size memory does a memory address point to? For a 32/64-bit system [duplicate]

The word size of a 32-bit system is typically 32bit or 4 bytes. Is it true that one memory address points to 1 byte in memory? If that is the case, then is it safe to assume that one memory address ...
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How to find heap area range for a process?

Wondering how malloc works? I mean in theory we know it reserves some memory in heap area but how do I know the start and end of this region reserved for any individual process(As process must be ...
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Cannot browse internet with 48Gb of Ram

I have 48Gb of Highspeed Ram and yet I cannot download from Steam or a site like MyAirBridge without my computer slowing to an absolute crawl. Even moving the mouse around the screen I have stuttering ...
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Why does Win10 not auomaticly grow the page file

The page file size on my Windows 10 64bit with 16GB phyiscal RAM is managed by Windows automaticly. The system tells me that the size is currently 2,38 GB. So the virtual RAM is 18,1 GB. When I "...
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MacBook is laggy when switching apps

On my MacBook I experience lags when switching apps or when the debugger hits an exception/breakpoint and brings my IDE to the top. The CPU usage is quite low, as you can see in the following image. ...
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Where are process pages stored - in the swap space or under file system? Can demand paging work without space space?

The Galvin OS text says that on older systems, there used to be a method, where the entire running process (when in idle state) was moved from the main memory (when main memory ran low) to the disk ...
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What if virtual memory is too high?

I have an HP Laptop with 4GB installed ram, and I have 465GB of available disk space and I had partition the D: drive space to C: drive with system disk partition. Now I had increased the virtual ...
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Moving the page file to a different folder

My Windows 8.1 To Go machine is always popping up saying it's low on memory, so I finally decided to make a page file. The problem is, I was going to make it on my largest hard drive on the computer. ...
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Windows paging file size with 100GB RAM

My system has more than 100GB RAM. But when I have too many applications open or Tabs open, I feel the system is slowing down even though the RAM utilization is around 10-15 GB. My paging file size ...
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Understanding virtual machine memory allocation and process virtual memory - Hyper-V

I am trying to understand how the memory demands of my application are imposed on a virtual machine and/or the host computer. The context of this question is Windows 10 guest O/S on (probably) Windows ...
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why physical memory NOT contiguous?

Background: I was running a kernel module that give me some info about kernel virtual address space which told me that Linux lowmem region is approximately 7.24 GB. lowmem region is supposed to be a 1:...
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Sysinternal's VMMap is unable to find injected memory

I'm writing a Python script that uses the Windows API to learn process injection. The injection is successful. I can verify that the shellcode is running, and Process Explorer shows the connection: ...
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How can I stop `vmmem` process?

I installed docker on windows home which uses WSL2 as a backend. However, ever since I installed a new container on it yesterday my computer fan has been turning on every 5 seconds. I am not sure ...
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How do I remove/disabled MsMpEng.exe? [duplicate]

My system regularly crashes with the following error in the error log Windows successfully diagnosed a low virtual memory condition. The following programs consumed the most virtual memory: MsMpEng....
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Esxi not reading all installed memory

So i have esxi with installed memory 12 GB The vmware reads 8gb only I have raid hardesk And SSD THICK PROVISIONS data store So why the esxi reads only 8GB?
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How to force Windows 10 to use pagefile on usb-connected SSD?

I have a constantly connected USB SSD disk. I'm never going to disconnect it at runtime. It operates in a "better performance mode", not "quick removal". I can configure pagefile ...
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Why is Windows apparently using HDD instead of SSD as virtual memory?

I'm running a python notebook which is reading big files from disk (stored in HDD) and putting their content into memory. My computer seems to be using virtual memory, because it is running out of RAM,...
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Using compressed memory under Miniconda container

I am using continuumio/miniconda3:latest as the base image for my container. It looks to be debian based. I run it under Amazon Linux 2. I would like to optimally use compressed memory, perhaps zram, ...
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Page file size in Windows 10

As I have gone through some articles, the virtual memory page file size should be 1.5 multiplied by the RAM size. I am currently using 8GB physical RAM in my laptop. So accordingly the page file ...
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What if the computer programs would know about the existence of each other? [closed]

In modern computers, virtual memory provides a layer of abstraction, thanks to which the program thinks that's it works with the processor itself. I know it's impossible under the conditions of modern ...
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Adding RAM (32GB to 128GB) Windows uses much more memory: why/how/where?

I recently updated a 9900k system with 32GB to 128GB of RAM. After getting rid of useless drivers, at startup, Windows 10 enterprise x64 uses 2.6GB of RAM. After upgrading to 128GB, the memory used is ...
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Does increasing ram reduce memory usage percentage in windows 10?

I have i5-9300h processor and 8bg of ram on my laptop and recently have noticed that Chrome and apparently Desktop Windows Manager accounts for maximum memory usage in my task manager. So upgrading my ...
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Why should I install my programs into my SSD? Shouldn't disk accesses be infrequent after loading to memory?

I'm wondering why people always say to put the Operating System and the program installations on the SSD (as opposed to a larger magnetic disk HDD). As I understand, in the memory hierarchy, programs ...
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Can you use virtual memory like you can physical RAM if you have an NVMe drive? Are there limitations to this?

I have a program that needs LOTS of RAM to for a computation project I need to run for a weekend. Obviously I don't have supercomputer ram and my limits as a consumer is 32GB. Windows has memory ...
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Shared GPU Memory. Can I turn off this feature?

I am running: Windows 10 Nvidia GTX1070-8GB 24GB System RAM i7 I am running into an issue in my video editor, complaining about depleting the GPU memory. When inspecting my resources, I noted that ...
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How to increase virtual memory in Windows 10

Premiere Pro is complaining when I import more than 120gb of video. I have 240gb ssd, 10gb RAM. When I increase virtual memory to 15GB, max 30GB, I still getting the low memory import error once the ...
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Set the page/swap file on an external hard disk to save space on the main system disk

My 32-bit Windows 10 machine has a reasonable processor, but limited hardware resources (only 4GB RAM and 28GB local HDD). Windows itself takes up nearly half the disk so I'm using an external 1TB USB ...
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.NET application seems not to be executing some operations when left to sit idle - laggy after sitting idle

I have a .NET application which basically does the following: Is connected to a bunch of serial devices (~32) via COM ports, and is processing data coming from those devices When a message is ...
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34 GB of commited memory but no app actually commited that much

Sometimes I encounter Out of memory errors and Windows Event Viewer shows this (translated): Resource-Exhaustion-Detector: A lack of virtual memory in the system was successfully detected. The ...
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Why do I seem to run out of memory when at 80% memory usage instead of 100%

Both on windows and Linux machines it seems as if memory usage tops out around 80% according to resource monitors. Once memory gets around 80% disk IO starts to shoot up and I can hear the computers ...
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Does macOS compact RAM to save power?

We all know that a modern OS will save power by throttling the CPU (or even putting it to sleep) when it isn't needed. But what about the RAM? After all, DRAM can't be powered-down without losing its ...
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Commited memory keeps going up

So I have been having this problem for over a year, if anyone can help me solve this I would be forever grateful. Seriously. Upon using my laptop (8Gb of physical memory) for a long time eventually ...
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Process Explorer Reports Processes with 2TB "virtual size" in Windows 10?

This screen snip of Process Explorer shows multiple processes with >2TB "virtual size": This can't mean they are all using 2TB of virtual memory, so I'm wondering just what this means.
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What is the history behind `ulimit -m` / RLIMIT_RSS not working?

According to man setrlimit (which is what man ulimit directs me to), RLIMIT_RSS Specifies the limit (in bytes) of the process's resident set (the number of virtual pages resident in RAM). ...
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Virtual Memory Usage reaches up to 100% Why?

One of my client is having cloud hosting. He has problem of high virtual memory usage: See the current status Virtual Memory Usage 20 GB / 20 GB (100%) Physical Memory Usage 1.82 GB / 5 GB (36.47%) ...
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How to drop memory caches in macOS?

In GNU/Linux there's a way to drop_caches. drop_caches is the command that would flush caches from the main memory. I don't have such a command in macOS. How to..?
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Cannot access System Properties (Windows 7)

In Windows 7, I cannot open Advanced system settings (nor "systempropertiesadvanced.exe") Computer name, domain and workgroup settings (nor "systempropertiescomputername.exe" Performance settings (...
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How to identify PIDs which are writing to SWAP memory in Linux

Server is using swap memory when there is enough RAM is available because of which users are facing intermittent slowness and performance issues. In the free command I can see that there is 6927mbs of ...
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Windows reports "Out of Memory" despite huge pagefile

How to force Windows to use the swap file to the fullest? I use Windows 7 64-bit and I have 16 GB of RAM + 8 GB (static) pagefile. When I open many Chrome tabs, and the physical memory is almost ...
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linux kernel virtual space , lowmem , highmem , RAM size

I need some help understanding the exact relations between the linux kernel virtual space , specifically LOWMEM area , and the available RAM size as seen by the kernel. after reading this article: ...
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