Memory management is the act of managing computer memory at the system level. Questions tagged with Memory Management can cover Applications and Operating Systems

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I've been getting BSOD on a random-interval basis for several days now

So I've been getting BSOD for several days now, and the only thing common (at least when looking through bluescreen view) is that they're always caused by ntoskrnl.sys crashing. Now I know this is a ...
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5answers
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Why doesn't a SSD improve the speed of running applications compared to a HDD?

In articles/forums about pc gaming I always see people saying how Solid State Drives only make games load faster at startup (of the applciation) than they would with a Hard Disk Drive, and that an SSD ...
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Linux malloc segmentation fault missing [migrated]

The included program should produce a segmentation fault in Linux, but it doesn't. #include <stdio.h> #include <stdlib.h> #include <unistd.h> /* This program should produce a ...
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2answers
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High Disk Usage while cleaning out “modified memory” on Windows 8

I am looking at the resource monitor tool of Windows 8. After closing a VMWare-VM, the "modified memory" jumps from 16 MB to 2GB. It slowly goes back down to 16 MB. While going back down, the disk ...
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1answer
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What is the easy way to start memory dump analysis?

Can anyone help me to know what all skills are required before one can start analysing Windows memory dump. Any reference on where to start would be appreciated (Beginners level)
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Can anyone explain these poolmon numbers?

This screenshot is from a machine which I believe might have a driver memory leak so I've been monitoring poolmon.exe. This is not the issue I am chasing but the numbers for LS2i are so absurd I was ...
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0answers
105 views

how to disable system and compressed memory (reason? screen freeze)

I have an hp laptop core i7-6700hq 12gb ram preinstalled windows 10 sometimes my screen freezes I think that's because of "system and compressed memory" because as soon as it unfreezes I check task ...
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Clarification on the Shared Memory column in the Linux top utility

We are having a memory allocation issues with a program running under Linux. We are using the top utility to try and determine the root cause of the problem. One thing that we have noticed is that ...
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Memory defrag in Windows 10 for virtual machine hosting

I have a very legitimate reason to want to defrag the memory - I need to run a virtual machine that requires 2GB of memory. Unfortunately it requires that to be one continuous block in physical memory....
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After RAM upgrde, Ubuntu 14.04 does work with 2GB but works with 1 GB

I have an Sony Vaio laptop which had 1GB RAM (512MB X 2 ). I wanted to upgrade to 2GB as the laptop supports up to 2GB. When I tried to use 2GB RAM on Ubuntu 14.04 32-bit it boots, passes the BIOS ...
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1answer
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BSOD Memory Management

While I was playing overwatch, I got several BSOD. I already tryed Memory Diagnostic and sfc/scannow with no luck! I attach some dump of the BSOD! Thanks for the future answers! DUMP
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After upgrading to Windows 10 suddenly low memory issues

I have 8GB of ram and a decent computer. After upgrading to Windows 10, I keep getting messages saying I need to close programs and that I am low on memory. Then, right after, my screen will go black ...
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Relation between memory host and memory arguments xms and xmx from Java

I have the following host with the memory details: $free -m total used free shared buffers cached Mem: 7872 7579 292 17 483 ...
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1answer
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Which address space is used in system calls? physical? or virtual?

Explanation There’s two kind of address space virtual and physical. On the physical model (typically used by the kernel) the memory is bounded and each address correspond to physical ones. The ...
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1answer
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My AppleMacPro1,1 has 8 slots for 2x1GB memory in each

I cannot find a replacement for 2 of them that have failed, and can only find 2x2GB ones. My question is will it be ok to put these in the 1GB slots?
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2answers
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Why won't Ubuntu use swap?

I'm running 32-bit Ubuntu 10.04 on a 4-core AMD Phenom machine with 4GB of RAM. With normal use (a dozen or so Chrome tabs, 1 VirtualBox machine, 2 or 3 instances of QtCreator, ) the memory will ...
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Windows 10 - MEMORY_MANAGEMENT bsod on startup after installing linux dual boot

I recently installed a Kali linux dual boot on my laptop, and now every time i try to boot into windows, it crashes with a MEMORY_MANAGEMENT error before it even reaches the login screen. I've ...
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1answer
22 views

Some Software Missing After BSOD

A few days ago I was running Windows 10 on my custom built PC and it had been running reliably for a year, but suddenly I got a BSOD and the error was MEMORY_MANAGEMENT. I restarted it and found that ...
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Is it possible to limit the memory a process uses from command line?

Is it possible to limit the amount of memory a process consumes from the command line and eventually automatically kill the process if it tries to overpass this limit? Something like MaxRam -4GB ./...
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Where exactly L1, L2 and L3 Caches located in computer?

Where exactly L1, L2 and L3 Caches Located in computer ? I know, we use Cache to increase performance by picking DATA and INSTRUCTIONS from Cache rather than Main Memory. Following are my questions ...
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2answers
587 views

32-bit OS with 3GB Ram and 1GB GPU [duplicate]

Possible Duplicate: Making full use of memory on graphic cards Hello! Does anyone know if 32-bit OS will be able to fully utilize 4GB of memory (3GB Ram + 1GB GPU)? I know that out of 4GB ...
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1answer
146 views

MEMORY_MANAGEMENT BSOD - memtest86 showing no issues

I have just done a new I7 build and I am getting more BSODs than I'd like. I thought the first install might have had something go really wrong at some point, so I blew it away and started again. You ...
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1answer
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Processors and virtual/physical addresses

In nutshell, as I understand memory management, processor produces virtual addresses. These addresses are translated to corresponding physical addresses using per-process address table by MMU (with ...
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1answer
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Change memory size units in Windows 10

Just as the title implies, how can you change the unit sizes displayed in Windows? Instead of displaying files like this: +--------+---------------+ | Name | Size | +--------+--------------...
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1answer
58 views

Is there a way to reserve some RAM for a process to prevent it from becoming unresponsive?

I would like to have a text terminal remain responsive, even if any rogue application tries to allocate the whole RAM. The terminal's child processes should be allowed to use this reserved RAM as ...
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page size in an OS with segmented demand paging

Exam Question : Assume that we're using an operating system which uses segmented demand paging with N segments and the average size of each segment is S and each entry in the page table is e bytes and ...
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Is queue a storage allocation area in memory?

We mainly study about heap , stack data structures which act as storage allocation area in memory , so is it that queue is also a storage allocation area in memory ,according to me PCB's are made in ...
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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
72 views

Laptop CPU and RAM usage

For the past two days my laptop has been using way too much RAM and CPU even when I am not using my computer and/or have 1 window open. Here is a picture of my performance tab: Any idea why I am ...
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1answer
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What does the content of the page table look like after a page has been swapped out to the disk?

From what I understand, the page table maps virtual addresses to physical addresses. But what if a page has been swapped out to the disk? Wouldn't the location of the data take more bits to write ...
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2answers
155 views

The instruction at X referenced memory at Y. The memory could not be written

TFG (Total Files Gaurd) is a software that used in offices to protect client's data from thief by malware and users. It encrypt some types of files(Network's Admin selects which type he/she want to be ...
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0answers
216 views

How to disable caching in windows server 2012 R2?

How to disable caching in windows server 2012 R2 ? Any way to set it to a minimal value is also fine. Also disabling caching for a particular application will also work as only 1 application is run ...
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Merge or extend drives in windows 7

In the below screenshot, system drive (C:) is almost full. There is also free disk. The merge or extend option is not available for system drive. For free space, all options are disabled. ...
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“Empty Working Set” option in RAMMap

What does this option basically do? Does it free the unused memory? If so, how does it affect the performance? In what cases will I use it?
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High RAM usage/software shutdown at 75%?

How come when my memory is at around 75% I get popups saying that my programs should be shut down, and sometimes they even fail to start when it's at around 80% (even though they would be using 2-5% ...
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2answers
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Which is better at memory management: Windows 10 or Windows 8.1? [closed]

I ordered an Acer Aspire Switch 11 Touchscreen Windows 8.1 PC with a Core i3, but it only comes with 4GB of RAM. I want the 4GB to work as well as possible, so my question is should I upgrade to ...
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1answer
187 views

What is the benefit of increasing on-board graphics card allocated memory from BIOS?

In my BIOS settings I can set my Intel graphics card's memory from the default 256 MB to 512 MB. My laptop has a dedicated graphics card as well. Should I? What would I gain? Are there any downsides?
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1answer
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Having several BSOD with different messages in new computer

I've been having several BSOD during the last month or so. I though that they were for some kind of wrong driver or something software related, but tried to update everything to the last version with ...
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1answer
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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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1answer
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How does Windows deal with process memory or resource exhaustion?

The other day I was working on a Windows 7 32-bit PC, with a few applications running including Firefox. Over time I kept opening new tabs in Firefox until, suddenly, the Firefox window started ...
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Why is my private memory usage so low compared to commit memory?

After 120 hours of stable uptime on a Windows 7 computer (with hibernates instead of restarts between days), Windows has done something strange: programs consume large amounts of memory as usual, but ...
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3answers
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How many processes are in memory at a given time [closed]

Is there only one process in memory at a time and context switches constantly move processes back and forth between DRAM to disk? Or are multiple processes kept in DRAM at the same time, and context ...
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1answer
4k views

Limit memory allocation for process

I am running Windows Server 2008 R2, and I would like to limit the allocated RAM memory space for a specific process, I have installed "Windows System Resource Manager" but I can only view the ...
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2answers
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Where is the rest of my MacBook’s hard disk space?

I have a MacBook Pro with a 250GB hard drive. Right now I'm left with only 4GB free memory. I've selected the root folder in Finder (my computer name) and hit CMD+A and ALT+CMD+I to get the size of ...
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How do I find lower the amount of or find what is using committed memory?

I was recently looking at this question: Why is the total memory usage reported by Windows Task Manager much higher than the sum of all processes' memory usage? when my task manager was doing just ...
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2answers
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OS freeze when OS starts to swap memory

Background: I have 16 GB of memory in my machine. When my machine uses already 15 GB of memory and my application allocates another chunk of 2 GB memory I run out of physical memory and swapping (...
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2answers
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In Windows 8.1, is there a way ensure a process is not the first to get killed when running out of RAM?

I wrote a .NET 4.5 application that buffers colour, infrared, and depth data from a Kinect v2, performs some processing on it, and then dumps it to disk, in uncompressed form; the .NET application ...
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What are these folders for? [duplicate]

I have dozens of folders like this in my C:\ drive, I'm not sure what exactly they do (I think they may be related to Windows 7 updates) and I'm running very low on space so i'd like to be able to ...
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RAM Usage is insane running a game [closed]

My system is Windows 7 Home Premium, i5-2320 proc, 8GB DDR3 1333Mhz RAM, Z77X-UD5H mobo, I have two HDDs, one is a 1TB and the other a small 288GB (250gb). Also, a new GPU, the R9 285. Recently I’ve ...
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1answer
311 views

DDR4 Module/Bank Management

I'm a bit confused about how DDR4 works in detail. I'm not very familiar with DDR details or Memory-Controller details. So far DDR4 is advertised everywhere that the transferrates of DDR4 accumulate ...