Questions tagged [memory-management]

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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How does min_free_kbytes impact page cache?

We're tuning performance in centos6 servers. We have quite a continuous large pressure of write and we were always having quite high consumption of memory(mostly for page caching). We changed the ...
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Can bad memory hardware slow down Windows 10?

My Windows 10 is sluggish on a 24GB laptop with an SSD. Often I click on an option in an app and it takes 2-5 seconds to respond. I went through disabling Windows Search and some unneeded Windows ...
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Can the CPU use the dedicated GPU Memory?

Inspired by this question So the GPU can use the main RAM as extra memory? So can the reverse happen? Can the CPU use the dedicated GPU memory as faster or extra RAM? In task manager I have 4GB of ...
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How accurate is MemAvailable from /proc/meminfo?

While the difference between MemFree and MemAvailable has been asked before (What is the difference between MemFree and MemAvailable in /proc/meminfo), the answers and articles (for example https://...
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Windows 10 task manager, under Details tab->Commit size, clearly didn't add up to what have shown in Performance->Memory->Commited

I know what committed means, just don't understand where all it goes. Performance Tab Start of process list, sorted by commit size End of process list, sorted by commit size
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Why 32-bit Windows can maximum have 16TB Page File?

According to Microsoft, the page file sizes of 64-bit and 32-bit Windows are 256TB and 16TB respectively. In 64-bit, the virtual address looks like this: With 4 levels of 9-bit memory mapping fields ...
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PC Having Memory Issues

So a few months ago I built my PC. The mobo is an ASUS ROG STRIX Z390-E. I have 4 sticks of Corsair Vengeance LPX DDR4 3.0GHz 8GiB. The CPU is an i9-9900k. I have a gold rated 1200w PSU in it as ...
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Chrome Error. Not enough memory to open this page [duplicate]

chrome error check the image i think is because of some extension how mass disable all extensions in chrome broswer ?
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“Speed” vs “Configured Memory Speed” in dmidecode

Does the information below from dmidecode indicate that my memory runs twice as fast (overclocked) as nominal or at half speed? (My WWW searches yielded confusing information corroborating both.) And ...
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Physical memory and commit charge in windows

I would like to know why task manager shows 66% of memory usage while resource monitor shows 43%? It seems that task manager shows the commit charge value.
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Why is my mac using 450mb swap when I have more than 16gb free

I wonder why my mac is using 450mb+ swap when there's lots of free ram. I don't understand why it would decide to use swap instead of ram when there's so much of it free. I imagine the proces using ...
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In which “order” does Windows manage RAM?

I'm asking this question because I was having memory problems (BSODs, MemTest errors), which seem to have stopped after I switched the faulty stick from SLOT3 to SLOT4 (as labeled in my motherboard). ...
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How to fix Kernel Security Check Failure and Memery Management BSOD?

So I keep having Kernel Security Check Faiure and Memory Management BSODs on my desktop. The seem to happen randomly, but relatively frequently. I opened Command Prompt and ran sfc/scannow and it said ...
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781 views

How the CPU determines whether to put data in L1i or L1d

How does CPU decides what cache to use to store data just retrieved from memory? As far as I know the smallest unit of memory that CPU can access (read or write) is 64 Bytes (x86_64, DDR3/DDR4) which ...
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Clear memory content in POST

I would like to check something about Power-On-Self-Test, How should I enable the Power-On-Self-Test (POST) to clear the memory content?
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How can i overcome 1MB Restriction of /dev/mem

I am trying to access to physical memory through accessing to /dev/mem device in fedora, and only i could access to first 1MB of /dev/mem. i tried to set strict_devmem=0 in /etc/default/grub file but ...
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Is using typical memory used when working under windows environment a good knowledge of needed memory for a new computer?

Let s suppose I want to buy a new computer. My reasonning for the amount of ram is the following: I look under windows environment how much memory I use when a large amount of applications that I ...
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Does windows clean up memory after my C program?

I have a short C program, but with no garbage collection, so I assume there are some memory leaks. Does Windows free the memory used by the program when it has finished executing?
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Docker container dies & gives: -bash: fork: retry: Resource temporarily unavailable

Unsure whether tho ask this on here or other communities (i.e SuperUser or Unix&Linux) but will keep here for now. I have a dockerised NodeJS app using Selenium & managed by PM2 runtime. The ...
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How to control memory consumption in windows 10?

I have been looking for a solution to the memory consumption in windows 10. Always when the system boots or while the windows is running the task manager shows almost 100% of disk/memory or both are ...
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How does Linux reduce physical memory fragmentation in real-time?

The Linux memory allocator works by mapping pages from physical memory to virtual memory. It can either map a contiguous area or sparse chunks from physical memory, to a contiguous area in virtual ...
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How are memory location addresses actually stored in the cpu?

Time and again, I've seen a representation of memory locations which is depicted as linear array of rectangular boxes with their respective memory addresses to their left side. Now, these addresses ...
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windows memory management issues

hey guys so recently installed copy of stripped down windows 10 enterprise LTSC 2019. Im no windows expert so I dont know how or what windows uses to keep hungry software from using as much memory as ...
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Which memory counter best describes the actual physical memory utilized by an application and is there a threshold value in perfmon for memory?

I'm running some performance tests on client machine to capture the Response time and resource utilization by applications, which is the memory counter that i need to look at to get the right physical ...
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Does the EHWPOISON (133) error code cause permanent damage?

Recently, while testing some software on an AAEON UPcore running Ubuntu 16.04, I have encountered exit code 133 EHWPOISON. I had never heard of it before, and after some research I found this page: ...
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Very high memory usage on Windows 10 but programs don't add up

I generally get a memory usage >80% but when I check the Task Manager, none of the programs add up to that usage. The laptop (Dell XPS 13 9360) frequently has to resort to my SSD with a large number ...
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Php or nginx memory increase

newbe here. I have a mariadb 10.4, php7.3-fpm nginx and joomla cms. A dataset is returned with around 100.000 records into an array and some calculation happens on the array. Then a small portion of ...
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Why RAM chips are represented like 2K X 8 format

Can anyone please explain what is the meaning of representing RAM chip in a format like 2K x 4. What are the information about the chip we get from such a representation.
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How to stop Cheat Engine and other memory modificators (JAVA application, Minecraft)

I am looking for solution on how to prevent Cheat Engine and other memory modification programs. I am working for one Minecraft server, and we have problems with CE and memory modificators because ...
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Terminal management tool for VMs -TUI [closed]

I want a tool (terminal based) that will list all the VMs, mark the running once, write how much time the VM is up, when was the last connection to it (via ssh). And also give me an easy option to ...
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How to monitor the heap usage of rust nightly?

I am wondering how to monitor the heap usage of a program written in rust nightly. This program is written and compiled in rustc 1.37.0-nightly (7cdaffd79 2019-06-05) and Ubuntu 16.04. Specifically, ...
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Is Windows 10 memory compression used if you have no page file?

I am investigating the use of Windows 10 memory compression, to decide what the best way is to 'swap out' memory. On one hand, I could leave everything to Windows, rely on the page file and ...
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How do I have non 64k aligned private memory space?

In windows memory alignment granulatity is 64K, why do I have 4k on 0x7FFEF000? Windows 10 PRO, 11763.316
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BSOD several errors W10

i am getting several erros from MEMORY_MANAGEMENT and SYSTEM_SERVICE_EXCEPTION since i build this computer. I already tried all the normal procedures like scan virús, Chkdsk, SFC and reinstalled ...
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Windows assigning 4GB of shared Video Memory to my dedicated GPU

I was wondering if there was a way to change the amount of Shared Video Memory automatically allocated to my GPU. ASUS Prime H310M-A Intel i5-8400 @ 2.80 GHz R9 380X @ stock settings ...
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Can Low Memory on a Computer Cause in More CPU Usage?

From my last question, another question emerged in my mind. As mentioned there, having low memory causes the operating system to use page-file in Windows, also having low memory causes services like ...
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What are “Commited Memory”, “Cached”, “Paged”, “Not-paged pool” & How They are Different with “In-Use Memory”

I was thinking to add some RAM to my computer as it goes slow these days, so i came to the Taskbar to see memory usage statistics but i had difficulty guessing the real meaning of some memory ...
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Very slow server performance at low loads

I use a server at work to run models on modestly large datasets in RAM (think 10GB to 100GB). There are only a few people on this server at any time. The server has lots of RAM (over 1TB) and many ...
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998 views

How to delete a unaccessible volume on Mac?

Hi do I delete virtual partition on virtualbox? I'm using MacOS Mojave v10.14.3 and once installed virtualbox. I deleted the virtual machine and the app. However, the partition is still there. How ...
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How guarantee a responsive Desktop using cgroup memory limit

I would like to setup a system with limited memory (raspberry pi) in such a way that application can't cause the desktop (x11, LXDE, openbox, mouse driver, video card driver) to be unresponsive. When ...
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Why is VirtualBox Guest Memory allocated in system PTE on Windows?

I recently went on a wild chase to find the memory used by VirtualBox. As you may know, in the task manager, or Process Explorer, the memory used by VirtualBox is only a few hundred Megabytes, not ...
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Memory dump on Ubuntu 18.04 failed on too big /proc/kcore/

There are two great articles about how to aquire memory on Linux using linpmem: SANS holdmybeersecurity Trying the approach from holdmybeersecurity I ran into the following issue, which seems to be ...
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Understanding OOM killer reason on openwrt system

This is a busybox/openwrt system. OOM-killer are intermittently killing processes. Sometimes collectd, sometimes snmpd and as in example below uhttpd. I could aproximately free up 37% by not ...
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How to fix MEMORY_MANAGEMENT and ATTEMPTED_WRITE_TO_READONLY_MEMORY BSOD on Windows 10

So after 3 years of using a fresh install of Windows 7 x64, I've to upgrade to Windows 10 because of job reasons. I downloaded the latest Windows 10 Pro build image (1803) from Microsoft and used ...
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Can one use 4-bit, 8-bit, 16-bit, or 32-bit sized pointers on a 64-bit machine?

I just did a rough calculation around the max size of an unsigned 64-bit integer, which is: 18,446,744,073,709,551,615 q5 q4 t b m t h Looking at AWS's hardware specifications on their ...
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Understanding Windows Process Memory Layout [closed]

I find many blogs and documents explaining process memory layout. All of them describe a memory layout of following kind: But when I look at the VMMap tool in windows, I find pages of stack, heap etc....
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Virtual and Physical address mapping in 32 bit Windows

Correct me I am wrong. Q1) My understanding is that in 32 bit mode we get 4GB virtual address space. Is this because 32 bit Windows can only support 4 GB physical RAM.? Q2) Every process get its own ...
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Memory exhaustion with apparently no process exhausting it

I am suffering memory exhaustions on a Windows 10 computer nearly every three days, with no pattern to reproduce (sometimes after PC is powered on for days, sometimes just after power on, sometimes ...
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Memory management in 32-bit Windows

In a 32-bit system is the 4GB virtual address space for the whole OS or is it for individual process? If it is for the whole OS, then does the OS fools every process that it has its own 4GB of ...
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Virtualbox consuming all of my memory

System specs are as follows: 62.8GB of RAM 1TB of Hard drive space - Samsung 960 Pro M.2 CPU is an AMD Threadripper 1950x - 16Core Running Ubuntu 17.10 Virtualbox 5.1.34_Ubuntur121010 So I started ...

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