Questions tagged [memory-usage]

Questions related to memory usage related to RAM, swap; issues expansion, in Ubuntu.

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What's causing the lag spikes to my ubuntu linux server node process

I run about 5-6 node processes related to discord.js, and sometimes I get some lag spikes and some of my node processes are printing ''Killed'' and it's terminating their process. Why is that? here ...
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Ubuntu running out of RAM and crashing and freezing because of it

i have 32GB of RAM in my computer which should be more than enough as a web developer. i think adding more will only delay the out-of-ram issues. i am experiencing issues on Ubuntu where chrome is ...
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Memory and CPU usage on kill -STOP

I recently learned kill -STOP command. I was wondering, what happens to the data on memory if I do this command. For example, if I do kill -STOP on a process 999 which is taking 20 GB out of 32 GB ...
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Should the snap-store be using >300Mb of memory?

The snap-store process is intermittently using hundreds of megabytes of RAM. Is this normal? Is there a solution?
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Too much “free memory”

I have extremely high "free memory". According to this site here it is better to have "free memory" as close to 0 as possible. What I understand is that this "free memory" is basically wasted memory ...
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1answer
44 views

High load average but low CPU from top

I'm trying to track down repetitive hangs on an oldish laptop (10yo, 4Gb of mem, 2 cores, Kubuntu 18.04) It now happens several times a day with moderate use (<10 tabs open in firefox, a bunch of ...
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46 views

Cache usage under memory usage in System Monitor

I came across Cache usage being shown under usual Memory usage section in System Monitor. It was never shown anytime earlier before today. Here's an Image I'm curious to know what it means as using ...
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Command for stopping program after some cutoff ram usage

I sometimes use some programs that use too much RAM and owing to RAM being filled up completely, my system crashes. Is there any command to make ubuntu automatically stop the execution of some ...
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Resource usage log

Does Ubuntu register the resources it is using into a log? I need to see the load and RAM usage of a server at a specific time (approximately at 5 AM).
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zswap can never find required modules on boot

I've had no trouble with Ubuntu 16.04 or 18.04, but I have recently span up a 20.04 VM and I cannot get it to set the correct Zswap parameters at boot. It would appear that it cannot find the required ...
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Xorg uses too much memory in Kubuntu 20.04

After a few minutes of working with Blender 2.82 I noticed high memory usage (i.e almost 4GBs which is 1/4 of my RAM) from Xorg process in my system.After closing the blender though, the situation ...
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Ultra high page cache usage potentially triggering kswapd0?

I have been running into a serious problem with my ubunutu 18.04 server. I started noticing that there were serious slowdowns in the server and when I checked, CPU usage was all maxed to 100%. I began ...
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Why Is Sudo Using 908kib of Memory

I ran the following command. sudo sleep 100000 Then, I checked the memory usage of the sudo process. Sudo is using 908KiB of private memory and 4.2MiB of shared memory. I know it's not a problem ...
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100 views

Unable to allocate free space to Ubuntu partition

So I'm kinda new to the Linux OS and I'm using Ubuntu, as it's said by many to be the best option for beginners. As I started using it more and more I stopped using it in a virtual-box and got my ...
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Image format for writing to disk with minimal memory mapping

I am developing an application(c++,gstreamer) in ubuntu that needs to read a video and save the frames as jpg(1920x1080) images - around 30 frames per second. Which image format is the closest to ...
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Why Ubuntu 18.04LTS takes >1.6GB after start?

i have Ubuntu 18.04LTS (+updates etc.) i've just recently noticed, that after restart, already 1.6GB of RAM is taken... why? I know there is a Docker service, fine (87MB ?), but i was expecting ~600MB ...
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Shrinking GPU memory objects that no are no longer needed

After some searching , I didn't find any standard way to release GPU memory that is allocated to Tensorflow.So I want to know is there a way to manually shrink VRAM objects that are no longer needed ...
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clamav shows twice in htop, takes a lot of memory and service has error but is running

When showing the status of clamav, I see the following clamav-daemon.service - Clam AntiVirus userspace daemon Loaded: loaded (/lib/systemd/system/clamav-daemon.service; enabled; vendor preset: ...
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Ubuntu 18.04: Is dynamic swap space sizing practical? Running out of memory crashed Ubuntu

My Ubuntu 18.04 (Bionic Beaver) installation crashed because of a problem with out of memory. I have messages like this: Jan 31 16:56:53 adam-Lenovo-YOGA-720-15IKB kernel: [47980.843963] oom-kill:...
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38 views

How to DEFINITELY stop Node

I am running out of memory on my computer and this is the output of "top": Node is taking all my memory. So I tried the following command several times: sudo pkill -f node Nothing change, when I ...
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1answer
120 views

System has 128 GB RAM, but 80 GB is Used Immediately After Reboot

My desktop system has 128 GB of RAM, which I expect most to be free after booting Ubuntu. However, free -m shows that 80 GB is in use, with only 40 GB free. Note that buff/cache is only under 1 GB, so ...
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free -m question

When using the free-m (see output in picture) the numbers don't add up. Shouldn't the sum of used, free and available be the total amount of memory?
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High ram usage is slowing down my laptop

Generally when I boot up my laptop and open firefox and other softwares, it used to consume nearly 1 gb of ram. my laptop 4 gb ram. But today suddenly after booting up, htop showed me that without the ...
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system becomes unresposive if RAM is eaten up

I have 8GB RAM and 20GB swap. If I run stress -m 1 --vm-bytes 8G --vm-keep the system cannot be used for a few minutes. the mouse pointer does not use any more. and even after a few minutes, it is ...
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114 views

What size should my swap be, and my swapiness, when I am having OOM issues?

What size should my swap be, and my swapiness, when I am having OOM (out of memory) issues? What I am experiencing is complete slow down until frozen and the only thing that works in mouse pointer ...
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126 views

Why does top report virtual memory and swap space usage differently?

As you can see in this screenshot, top reports chrome is using more than 11Gb of virtual memory, and yet only 0.417 Gb of swap space is being used. What is the reason for this? Is virtual memory not ...
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New 18.04 using 2 GB of RAM

I have a 4GB RAM laptop. During last week, my system was freezing a lot. When I checked the stats, it said 2 GB or RAM and 1 GB cache is in use. The load is some 1.2 or similar. So I reinstalled 18.04 ...
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Hang and speed issue

I am using Ubuntu 18.04 with following details Processor Intel® Core™ i5-4460 CPU @ 3.20GHz × 4 GNOME: 3.28.1 Disk: 422.6 GB Memory 3.8 GB when i used free -m total used ...
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367 views

swap file full while memory is half empty

htop shows 1gb/2gb used memory and 512mb/512mb used swap. cat /proc/sys/vm/swappiness shows 10 and cat /proc/swaps shows Filename Type Size Used /...
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dealing low memory in hadoop 3.1.3 in vmware virtual machine ubuntu 19.10

I installed Hadoop on a Ubuntu virtual machine. I downloaded the source file that means among the releases available on this page https://hadoop.apache.org/releases.html I downloaded 3.1.3 file https:...
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How to test oom-killer from command line

The OOM Killer or Out Of Memory Killer is a process that the linux kernel employs when the system is critically low on memory. ... This maximises the use of system memory by ensuring that the ...
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Hard drive memory exhausted (0 bytes) and system does not startup

NVIDIA Jetson TX2 has about 29 GB of data all of which was consumed during a build. Now when I am trying to restart, just the Wi-Fi connection pop-up keeps jumping but the system does not startup. ...
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109 views

Idle memory increased about 20% after recent ubuntu 16.04 update

I updated my system to get latest firefox 70 using the usual method. sudo apt update sudo apt upgrade Before the update my system's idle memory usage was near 30 percentage and after the new update ...
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[19.04]Should I be happy using mtrr_spare_reg_nr=0?

I noticed recently that my kernel displays the following error messages concerning MTRRs : mtrr_cleanup: can not find optimal value, and pmd_set_huge: Cannot satisfy [mem 0xf8000000-0xf8200000] with ...
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Ubuntu seems to not free RAM memory

I am using Ubuntu 19.04 in a laptop with 12 GB of RAM. When I start the system, everything is fast and responsive, and memory usage is 1.5 - 2 GB. Then if I start resource-intensive programs, like ...
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235 views

rsync on large file intermittently causes linux to force restart

I'm trying to copy a large file (150 GB) via rsync from another server (via rsync -r FOLDER2COPY username@IPaddress:/local/folder/to/copy/to) However, about 1/3 of the way through, my computer always ...
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63 views

High memory use can freeze the OS

On Ubuntu 19, I have used all RAM by opening many applications together (VMWare, Chrome etc..). The PC just froze and I had to reboot it. Does it mean that Ubuntu does not have any protecting ...
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36 views

How to reduce free memory to certain number for specific time duration

I want to stress memory for certain time duration. I am checking memory usage with vmstat -s and using tail /dev/zero command but tail /dev/zero times out in about 60s and it fills out memory randomly....
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What is the default swap space set on Ubuntu 18? [duplicate]

In Ubuntu 16 I get equal of RAM space as swap by default on installation; however, in Ubuntu 18 the swap space is set just a few MB. How do I change this?
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Omni.ja takes to much memory?

Recently I noticed my laptop freezes and I can't do anything unless I force reboot it with power button. This time I saw my memory usage increasing on indicator panel. So I had a look at system ...
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Ubuntu 16.04 CUPS High Memory Usage

I have a pretty standard installation of Ubuntu 16.04 with CUPS installed. CUPS recently received an update to the following root@librarygear:~# apt policy cups cups: Installed: 2.1.3-4ubuntu0.10 ...
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Incorrect memory displayed on ubuntu using free commands

I had partitioned my hard disk and alloted 100GB to ubuntu prior to dual boot, however when I check the memory available using free -m and free -h commands the memory displayed is only 15 and 13 GB, ...
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Ubuntu 18.04 running slow with 4GB RAM

I have a Ubuntu 18.04 LTS with 4 GB Ram , NVIDIA GeForce 820M on a Lenovo Z50-70 laptop. My system is running quite slow in terms of GUI responsiveness when I try to use it after keeping it idle for ...
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Image size mysteriously becomes 0 bytes after renaming

I renamed some jpeg image files through command line and all went perfect except one thing that some images do not have thumb nail and shows 0 bytes on checking their properties but are still getting ...
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108 views

How to free the memory occupied by a particular process?

I was load testing my selenium with chromedriver and geckodriver, and tried to open 100 browser instances. The system crashed for sometime and then it became alright. But the memory occupied by the ...
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How to analyse RAM usage in depth?

Please advise, given the following server RAM usage: Who uses these 12.4G? I have used free, top but no one shows me who uses this amount of memory. Please advise how can I analyse it in depth.
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Ubuntu 16.04 never swapping on

I am using Xubuntu 16.04 on my laptop, installed from a dist-upgrade of a Xubuntu 14. The laptop has 10 GB RAM and 4 GB Swap. Recently I upgraded the kernel to version: 4.15.0-51. The problem is ...
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Understanding disk partitions

Ubuntu version: 16.04 I have both Windows 8 and Ubuntu installed on my laptop. Recently my lapotop has started functioning slowly and hence I looked into the memory partition. I have attached the o/p ...
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410 views

Wine Windows Program Loader - out of memory

I'm running an old game (WoW 1.12) using Wine. On the particular server I'm playing on the crowding of people can make the game chew up memory fast. I frequently get a crash where the error is "out of ...
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Memory over-consumption: gnome-shell? google-chrome? slack?

I am having issues on a ubuntu 19.04 computer: regular freezes, ... Monitoring screenshots (htop) During a memory overload... (Unfortunately I didn't think of hiding userland threads on the 1st, ...

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