Questions tagged [ram]

Random-access memory (RAM) is a form of computer data storage. Today, it takes the form of integrated circuits that allow stored data to be accessed in any order with a worst case performance of constant time.

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Why is my Ubuntu Server crashing when ram gets full?

I have a 22.04 server that keeps growing in RAM usage and then always ends up crashing and dying when RAM runs out. This happens a couple weeks apart, as you can see in the included graph of RAM usage....
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Server freezed: watchdog: BUG: soft lockup - CPU#27 stuck for 28540s!

I have a server that started to have problems freezing and being unresponsive compatible with messages in syslog: kernel: [55917.089758] watchdog: BUG: soft lockup - CPU#27 stuck for 28540s! [python:...
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Why do cp, and nocache cp, clog up and slow down/freeze after 2-4 TB, but rsync is effective indefinitely?

Is there a setting I'm missing in CP and nocache CP that frees up resources after each file? I looked around, and read that cp and nocache cp are MUCH faster, and use more RAM instead of CPU, but not ...
Kmaws's user avatar
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Is there a way to relocate all data traffic to/from /tmp to /dev/shm/tmp? [duplicate]

Is there a way to relocate all data traffic to/from /tmp to /dev/shm/tmp? The performance of the RAM is always faster than the SSD. Furthermore, /tmp is used to store short-term temporary files. For a ...
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How to isolate cpu and ram for specific task. I already use "isolcpus" in the Grub setting to limit my CPU, but it does not get desired result

The main issue is to calculate the execution time of my algorithm, which is run in Python, and get a fixed execution time for each execution of the algorithm on the same data. I use the same data on ...
Dharmendra Thapa's user avatar
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Allocate unallocated space to ubuntu partition (windows dualboot)

I dual-booted Windows with Ubuntu (Ubuntu became the second partition). Now I want to transition to a single-boot system with Ubuntu. I have removed the Windows partition and turned it into ...
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Ubuntu doesn't clean up memory properly [closed]

My PC is having 11GB RAM, Ubuntu 20.04 and it run terribly slow and laggy for daily tasks of a programmer. Under 10 tabs of Firefox, 1 or 2 IDE windows, Telegram. I have suspicion over for a long ...
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Memory Read into PCIe non-transparent switch device

I am not sure this is the right place for my question. busybox devmem ADDRESS 32 into a PCIe device memory (PCIe device is an EndPoint of non-transparent PCIe switch). From the PCI TLP transactions, ...
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Way to high virtual memory usage

So, I recently notices that on Ubuntu, programs are using way too much virtual memory. system monitor screenshot How is MS Edge even using 1.2 TERA BYTES?? of Virtual Memory. I've 16 GB physical ...
Achilles's user avatar
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Motherboard's maximum RAM capacity

I'm trying to upgrade the RAM on a desktop computer, which currently has 4x2G m378b5773ch0-ch9 sticks. When I look up the manufacturer's website, It says that it Supports up to 16 GB (unbuffered) on ...
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Why am i having multiple (40 or 50) instances of game servers when i type htop?

Hi this is my first post, thanks for taking the time to view/assist. Hypervisor: Proxmox VM OS: Ubuntu (headless)22.04.3 Here is the issue. I'm running a game server and noticed an unusual large spike ...
linuxnewb's user avatar
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How to find cgroup memory limit in Ubuntu 22.04?

Using VERSION="22.04 LTS" and trying to find the memory limit which memory.limit_in_bytes or memory.max' gives. However, it looks there is no '/sys/fs/cgroup/memory/memory.limit_in_bytes' ...
mon's user avatar
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How to calculate the size of heap, file, variable or any element from memory adress?

I'm currently trying to get the size of the heap of a process and I got some confusions. In proc/PID/maps I got: 009df000-00a01000 rw-p 00000000 00:00 0 [heap] I know ...
Brave_XY's user avatar
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Available memory low despite no process using a lot of memory

so I fired up my personal Ubuntu 22.04 server today, and noticed that it was extremely slow in comparison to yesterday. I checked via commands what was going on and am really confused: As you can see ...
Franky's user avatar
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Memtest86 Test Result

I am using Ubuntu 22.04, since last week my web browsers (firefox and Chrome) have suffered random crashes. I looked it up on the internet and someone suggested I use memtest86 for hardware issues. ...
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Free memory consumed by browser and applications on ubuntu 22.04

I have 32 GB ram, that in days get eaten up by using web-browser firefox and other common programming applications. Even my swap get up to 17.9/37.3 GB written. OS Ubuntu 22.04. I have not been able ...
Henry Wittler's user avatar
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Enforcing and running apps with memory tagging extension

As you may already know, MTE is available in Ubuntu22LTS or above according to announcement. We know that we can add arm64.nomte for disabling this feature. But we don't know how we can enable and ...
jzand002's user avatar
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Do multiple running instances of the same executable binary share the same RAM image?

If I have, say, two long-running Node applications (think Express), do the two instances of Node code share the same physical memory? Data segments certainly will be separate, but do all code segments ...
Old Geezer's user avatar
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Ubuntu fails to boot properly after RAM upgrade

I have a Optiplex 3070 with a i5-9500 processor. It has 8Gb ddr4 on board, but I wanted an ugrade to 16Gb RAM. I installed two sticks of HyperX fury 8Gb DDR4 2666Ghz. After rebooting my screen went al ...
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slab_unreclaimable overtop and oom_kill [PID] process

Below is my kernel log Oct 29 10:34:34 kernel: [43384.171352] Mem-Info: Oct 29 10:34:34 kernel: [43384.171357] active_anon:514088 inactive_anon:280946 isolated_anon:0 Oct 29 10:34:34 kernel: [43384....
GLEN's user avatar
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Memory failure: unhandlable page. / RAS

Im new to desktop Ubuntu and I have errors in my /var/log/syslog When I started debugging this I initially thought that my stock memory was busted, so I went out and bought new memory. The problem ...
score's user avatar
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Memory controller unclaimed in Ubuntu 22.04.3 LTS

On typing sudo lshw -c memory I get a memory UNCLAIMED: *-memory UNCLAIMED description: Memory controller product: Sunrise Point-LP PMC vendor: Intel Corporation physical id: 1f.2 bus ...
Sujal Gupta's user avatar
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Slow memory leak, how to find?

We have a miniPC running Ubuntu Studio 22.04 which handles the processing of the audio for our FM broadcast transmitter. It is meant to operate 24/7/365 with little to no administration. Over time I ...
thatjackelliott's user avatar
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How to force flush ram after hibernate & suspend

There are methods to flush ram such as (1) sudo sh -c "echo 3 > /proc/sys/vm/drop_caches" and (2) sudo swapoff -a && sudo swapon -a and so on. But I am curious, when a ...
Joshua Robison's user avatar
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Why does memory-heavy processes lead to system crashes when swap is available?

I run a bath (snakemake -j 1) of memory-heavy operations in Python: subtracting two arrays up to 15 GB each, then calculating norms of the difference. Surprisingly my system started to misbehave: ...
abukaj's user avatar
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How can I check whether Memtest86+ has frozen or is irresponsive due to running a test?

Due to the comment on my question Why low swappiness (10) leads to system crashes? I decided to run memory test. When It starts automatically with the default "Fail-Safe" option, the screen ...
abukaj's user avatar
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Why low swappiness (10) leads to system crashes? [duplicate]

As I have 128 GB of RAM, I wanted to minimize swap usage by setting vm.swappiness to 10. I ran a bath (snakemake -j 1) of memory-heavy operations in Python: subtracting two arrays up to 15 GB each, ...
abukaj's user avatar
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StarCraft II eating my RAM

I recently installed StarCraft II, by installing the battle.net luancher, through Lutrus. I played a match of Direct Strike with my friends and I had severe lag, so I opened system monitor. I have 8GB ...
Dejagperd's user avatar
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Not enough physical memory is available to power on this virtual machine with its configured settings - VMWare Workstation 17.0.2

After recently bumping up my RAM to 64GB to freely toy with some more powerful VMs, I've disappointingly found I'm unable to boot anything with more than 3668 MB of RAM allocated - VMWare itself is ...
B H's user avatar
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Unexpectedly high memory usage in Ubuntu 22.04.3 LTS

I have noticed for a while now that my system seems to be using up my memory much more quickly than I would expect. When it gets like this, I do notice it slowing down a bit at time, and my fan starts ...
Niven's user avatar
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Ubuntu graphics / boot problem after RAM upgrade

I have an old PC that worked fine since maybe 2012 (motherboard+processor 2014). Recently I got Ubuntu 22.04 and everything was working fine. Even after my 12-year-old VGA died, the onboard video kept ...
Vinicius Gomes's user avatar
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3 answers
1k views

Why are new writes to files not surviving a power loss

I have a similar type of issue to: Raspberry Pi: Filesystem writes files, but after reboot the old data is back but not quite the same. I am using Armbian_23.02.2_Orangepizero_jammy_current_5.15.93 ...
av4625's user avatar
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How to leave some RAM aside for virtual terminal?

I want to leave some RAM aside for a virtual terminal that is accessed through Ctrl+Alt+F2. When my computer froze, I tried to switch over to it to kill some processes, but it was not being brought up,...
Usermaxn's user avatar
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Optimize system for rapidly loading large volumes of data

I'm running a complex Matlab program on my Ubuntu computer. It needs to load several .MAT files, each of which is several GB on disk and larger in RAM. I know it is possible to run this program - a ...
Post169's user avatar
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Low Disk Space on "Filesystem Root" in Ubuntu

I keep getting this message (Low Disk Space on "Filesystem Root") every time I open Ubuntu. I run Ubuntu on VMware Workstation. I installed some packages for a simulator that I want to use ...
Mariam Hachem's user avatar
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OOM kills Python calculation in terminal via remote but not in a ssh

I don’t know why my Python calculation is running when I am using an ssh connection to a Linux machine (Ubuntu). The same calculation doesn’t work when I run it in a terminal via remote connection. ...
Archimedes_91's user avatar
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1 answer
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How to check how much memory is being used for a software and how to increase memory for it?

Specifically, I'm using Ubuntu 22.04 and since the Rstudio software gets laggy sometimes, I want to check how much memory is being used for Rstudio and how to grant more memory for it. How should I do ...
Juan's user avatar
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kmv/qemu vm guests and host are connected through shared memory to collect and cache data beteween them

0 The configuration: host: Ubuntu:20.04 OS, guest: Ubuntu20.04 OS. The two files use the 9p file system for interworking. The current progress is as follows: the mmap function in C language is used to ...
Betty's user avatar
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How can I add/change shared GPU memory for my 3070 in Ubuntu 22.04?

I have used Linux a bit for research through the years but this is my first time messing with GPU things on my Ubuntu machine so a lot of this is new (I set up dual boot after recent frustrations with ...
samgee's user avatar
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Why does gui restarts on peak physical memory usage, though there is still plenty of virutal memory?

This has happened often. Everytime I see peak RAM usage, GUI restarts. Please, I would be greatful for any help. What are any other information required ? This has been happening to me when I use ...
maan81's user avatar
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How to Increase RAM cache/buffer on ubuntu 22.04 desktop

i have 32GB Ram I noticed my Cache is usually around 5gb or less. The most of my ram is wasting. in my understanding RAM's Cache is to speed up system and performance. so I was wondering are there ...
Anna Kessler's user avatar
2 votes
2 answers
3k views

Exploiting the potential of RAM in a computer with a large amount of it

I have a machine with 64 GB of RAM and I would like to be able to take full advantage of it in Ubuntu. Is there any application or way to achieve this? I mean something that leaves loaded in RAM ...
Ommadawn's user avatar
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Check RAM usage for i915 Intel GPU

I have a Lenovo Thikpad P14s with hybrid graphics : integrated Intel GPU and additional nVidia CPU. I used sudo prime-select intel to set it to use only the integrated GPU. There's a BIOS setting to ...
trent--'s user avatar
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2 votes
1 answer
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nemo-desktop taking too much RAM

On Ubuntu 22.04 I am using nemo-*. It's nice to use, but it has 2 core memory leaks. Nemo - the file manager - here I usually am able to just close all the folder windows which kills the process and ...
jave.web's user avatar
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1 answer
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( fuse-zip ) Using cp reported running out of virtual memory

Hello I am using this command find ./"DCIM/Camera" -name "Camera" -print -exec cp -n -a -p -R -v "{}" "/home/username/path/to/destination/folder" \; to copy ...
ghostanime2001's user avatar
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1 answer
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Some apps crash before opening on Xubuntu

For example, if I try to open a video with VLC, I can see it appear on the System monitor but it's quickly listed with red and disappears. It could be RAM related. I have 4GB and it's shown as 70% ...
fede's user avatar
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Issue with loading system after RAM upgrade

I was trying to upgrade RAM for my Acer Swift 3 laptop(Ubuntu 20.04). It has 8 gb RAM(2 - 4gb sticks) which is expandable up to 12 gb. So, I added 8 gb stick with the same specs and removed one of 4 ...
Nidhi's user avatar
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PTRACE_PEEKTEXT ptrace: Input/ouput error

I try to read the values from memory with using PTRACE_PEEKDATA. To find the memory address of specific line I am using with objdump - objdump --dwarf=decodedline ./exe_filename and got the output: ...
Aviel15's user avatar
4 votes
2 answers
6k views

MariaDB killed by OOM Killer every couple days

my MariaDB server is being killed every couple days. × mariadb.service - MariaDB 10.6.12 database server Loaded: loaded (/lib/systemd/system/mariadb.service; enabled; vendor preset: enabled) Active: ...
Johnathan Nguyen's user avatar
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445 views

Ubuntu 22.04 LTS consuming high CPU and RAM on HP EliteBook x360 1040 G7

I am experiencing an issue with my HP EliteBook x360 1040 G7 that's running Ubuntu 22.04. For the past few days my PC has been consuming high amounts of CPU and RAM, causing it to overheat and display ...
Christaiwo's user avatar

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