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

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14.04 - What's with systemd-udevd? Heavy CPU and RAM usage when system idle w/o any application running

I have left my laptop on overnight for charging two video recording devices via USB. Next day I woke up, I found that there was heavy CPU, ram, and swap usage (screencap for reference). In System ...
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1answer
36 views

Can swap be used instead of RAM?

I have an older netbook that I love. It's currently using a relatively recent version of Lubuntu. The hangup is its relatively low amount of onboard RAM: 1GB. This amount also cannot be updated as it ...
2
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1answer
30 views

“Inactive memory” management on Linux

One of the problems that i face to many times a week on Linux is the inactive memory management. Whenever i copy a a huge file or open a program like Matlab on my Ubuntu i notice that there is a huge ...
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0answers
20 views

Why does indicator-sound-service use so much memory?

What can it possibly be doing to require that much memory? Thanks. -Erik charm /etc/xdg/xfce4 282# cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=15.04 DISTRIB_CODENAME=vivid STAT ...
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0answers
20 views

Increasing free graphics card memory

My system is using an nVidia GTX 960 with 2GB of graphics memory, of which 1GB is used by Ubuntu when running just a firefox instance with a single window (checked with nvidia-smi). I would like to ...
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2answers
3k views

What is the difference between the memory usage report in System Monitor and the one by free?

I am using System Monitor 2.28.0. When I look in the Resources tab, I see a nice graph with for memory and swap. Memory is about 60% 2.3 GiB of 3.8. When I type the command free, I got : ...
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0answers
58 views

Running Heroes of the Storm on Wine

I installed heroes of the storm and changed it to the 32-bit client (like it says to do on wineHQ), but everytime I run it, the screen becomes completely red, and if I do anything it crashes and says ...
9
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4answers
11k views

How do I use oom_score_adj?

On 11.04, /proc/[pid] contains oom_score_adj, but man proc describes the old oom_adj. I have googled unsuccessfully for any information on how to use this. What I need to arrange is that processes ...
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3answers
8k views

How to free space in root directory and delete unnecessary kernel files?

Off late I am receiving continuous system alerts regarding low disk space in my root directory. I am given to understand that all my system updates are being saved in my root directory instead of my ...
21
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3answers
12k views

Lowering Compiz memory usage

I have been following the updates that appear every week in how they affect the performance and resource usage of Compiz since I installed 11.10 (Right now I am testing 12.04 and 14.04). For what I ...
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1answer
45 views

Which system monitors are able to show me a non-rounded memory usage?

Backstory: I am trying to detect memory leaks in a program by viewing the memory used from the system monitor, and seeing if it rises while doing a certain activity. System Monitor unfortunately ...
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1answer
55 views

Ubuntu 14.04.1 is consuming 7.8 gigs of 8 gigs ram?

Actually had to create a new account due to openid 2.0 obsolete....I havent been on Askubuntu in quite awhile but tonight I was doing some work on a website when noticing my computer for once was ...
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0answers
53 views

Cgroup (cgrules) does not work on reboot

I am currently using cgrules to limit the memory usage for specific users. Currently, I have set-up a cgconfig.conf file and cgrules.conf file. I then manually call the following commands: sudo ...
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0answers
25 views

Boot volume space [duplicate]

I am using Ubuntu 14.04, and need to create more memory space by deleting older kernels. I have tried several suggestions on the subject, but none have produced any results - boot volume still stays ...
2
votes
1answer
623 views

How to see how much memory/cpu Unity is using

I am trying to see how much memory and CPU the whole Unity desktop is using. For this I tried looking at the Unity process but since it is divided in many parts it became difficult. I want to see how ...
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0answers
17 views

Can't load admin settings

Hi I have recently done ddr recovery on my account on ubuntu via terminal however with the recup files have totally used up all the memory on my laptop and I couldn't find a way to delete them and at ...
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2answers
70 views

What is this and how can this happen? Is this a security issue or can it be a virus?

From the last 3-4 days, my laptop has started becoming much laggy when I'm working on Android Studio or if it is just running in the background. So, today again I was working in Android Studio. My ...
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1answer
248 views

ZRAM vs. regular swap partition

I don't fully understand the functionality and the potential advantages of zram. For example: once zram is activated, what percentage of memory will be dedicated to paging? Another issue: obviously ...
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2answers
71 views

How to allow a process to use more memory

I am trying to run a game on Steam at a decent speed. I exceed the system requirements for this game, and the game is already set to minimum graphics, but it is still running slow. I have been using ...
0
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1answer
1k views

Why does ubuntu not seem to release memory?

I am working with apache2+php and other web server apps. I have monitor as session connecting to a web server. RAM memory is full. But when disconnecting a session, it does not free the RAM memory. ...
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0answers
29 views

Several gigabytes free RAM, so why is my swap file used? [duplicate]

This is a typical situation on my computer: I'm running a few different apps and a LOT of Chrome browser tabs. There are still three gigabytes free RAM on my system: I had expected my swap file to ...
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3answers
115 views

Is it safe to delete .thunderbird after removing Thunderbird?

I'm running 14.04 Server with a ~16 GB SSD and ran out of room. I was able to clean up and get some free space but Thunderbird was using 1.7 GB in my home directory in .thunderbird. I've uninstalled ...
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1answer
214 views

Freeing page cache using echo 3 > /proc/sys/vm/drop_caches doesn't work?

free -m total used free shared buffers cached Mem: 24055 22439 1615 8969 16 9096 -/+ buffers/cache: 13326 10728 ...
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votes
4answers
6k views

How to configure ubuntu for lightweight low-memory usage?

I just upgraded an old, secondary computer to the latest Kubuntu (10.10). It seems the effort was a bit too much for the hardware and one 512MB memory module died. I tried to take it away, clean the ...
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0answers
38 views

Getting ' Critical Low Memory ' error in ubuntu 12.04.

Though my system has enough RAM and ROM memory. It is showing me this error. Previously it was showing " Low memory " only. But now it is showing " Critical Low Memory ". Can anyone help me in ...
18
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6answers
12k views

How to know each TAB memory usage ?

Hi, is it possible to know that, if Firefox or any browser is opened, whats the amount of memory taken up by each TAB of web-browser ? I am just curious to know.
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1answer
46 views

Increasing memory for ubuntu 14.04 LTS [duplicate]

I have installed ubuntu besides Windows XP and it is using only 5.9 GB of total drive space. I would like to know how to increase the size?![enter image description here][1]
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0answers
546 views

Ensuring fail-safety of an Apache server

I have a few Wordpress websites running on Apache 2.4.7 / Ubuntu 14.04.2 LTS. It is a virtual machine running on Microsoft Azure. The websites are using a MySQL server also running on the same ...
0
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1answer
162 views

Is ubuntu able to kill a process because of low memory and how to know it

Everything is in the title. I'm running a play framework and a redis process on my ubuntu 2GB RAM VPS but last night the 2 processes suddenly crashed without any log (which is weird because they ...
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0answers
20 views

Memory leaks with zeitgeist-fts. It takes 1.2 GiB of memory [duplicate]

I have a memory leak with zeitgeist-fts which takes up 1.2 GiB of memory. A screen capture can be found here: When I kill process, memory is released and everything is working fine. Then again, ...
2
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0answers
57 views

“-/+ buffers/cache memory” is zero

i have an OpenVZ VPS with ubuntu server 14.04.2 and i can access to a SolusVM control panel. Recently, "memory usage" is always 0 KB, and only "vswap usage" shows real swap usage. if i run free -k i ...
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2answers
248 views

how to see CPU and memory usage for a program after run it

I wrote a shell script and run it with terminal.script call another programs to run and have some child process. how can i see TOTAL memory and CPU used for that script after run it ? more generaly ...
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5answers
1k views

How to log memory usage per minute on Ubuntu Server?

I checked few programs such as htop or top command but couldn't find any features for logging per minute. Is there a way to do that for tracking memory issues ? edit: I was using linode and decided ...
86
votes
5answers
58k views

Why is swap being used even though I have plenty of free RAM?

I thought the whole essence of swap was to act as a temporary storage safety net when RAM was full but my swap partition is constantly being used even though I sometimes have as much as 3GB free RAM. ...
0
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0answers
72 views

Why my memory is shooting to nearly 100 percent which makes my laptop unable to work?

I am a newbie. I am currently using xubuntu 14.04 on my old dell laptop (~8-9 years old). When ever i watch any video on YouTube or similar site the video is not coming properly. I am not able to do ...
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0answers
15 views

Ubuntu VM shows different RAM then what vCenter is showing

I created a 64-bit VM with 4 GB of RAM and installed Ubuntu 14.04 64-bit The command, free –g, shows a total of 3GB The details screen on the desktop shows 3.9 GB vCenter Server Performance Monitor ...
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0answers
33 views

How can an application be allocated to multiple core CPU's?

In Ubuntu 14.10 64-bit, running femm42 finite element analysis software via wine. The solver reports "out of memory" when it attempts to create/load the "mesh", which is done through embedded Triangle ...
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votes
3answers
6k views

Why is my /dev/loop0 showing full?

I have sufficent memory , but somehow I get my /dev/loop0 showing usage of 9 GB here's my df-h. Filesystem Size Used Avail Use% Mounted on /dev/loop0 12G 10G 1.4G 88% / udev ...
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0answers
59 views

Jave heap space error appearing Linux ubuntu 12.04

I'm running my program and this error appears after some time java.lang.OutOfMemoryError: Java heap space at HadoopMyapp.HistogramPair.<init>(HistogramPair.java:25) at ...
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0answers
131 views

java.lang.OutOfMemoryError: Java heap space

I'm using Hadoop in my application, but just before the program exits I get this error java.lang.OutOfMemoryError: Java heap space I already modified the mapred-site.xml and added this property to it ...
0
votes
1answer
51 views

How to free up my laptop's RAM?

I have an old DELL laptop with 2GB of RAM and Ubuntu 14.04 (64-bit) as its OS. Many times I am out of RAM and thus every thing goes very slow! I think there is many background programs (services or ...
2
votes
1answer
297 views

How to prevent running programs from consuming all RAM and CPU?

I have an annoying problem with Ubuntu's resource management. Frequently it happens that some programs such as Google Chrome browser consume 100% CPU and most of my laptops memory. I want to have a ...
0
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0answers
52 views

What in install.sh in Kubuntu 14.04?

My laptop fan is sometimes loud when running Kubuntu 14.04, I guess it is because of one process taking 12-13% of CPU memory. I am new with KDE/Kubuntu. What is that? Should it be running like ...
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1answer
63 views

Creating a script involving the memory usage of processes

How can one create a bash script that displays the sum of memory usage for the processes which have PID<100?
69
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7answers
124k views

How can I monitor the memory usage?

I have used top to see the memory usage at the moment. But I would like to monitor the memory usage over a period of time. E.g start monitoring and then execute a few commands, and final stop the ...
0
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0answers
18 views

How much of the java program does Ubuntu memory-share between programs

For a given java version, say Oracle Java 7, how much does Ubuntu fetch the Java runtime modules (and linked libraries) from disk for each JVM, v.s. holding a copy of them in shared memory to be ...
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3answers
1k views

How to prevent so many instances of apt-check running?

I have an Ubuntu 12.04 server that just crashed because of a very obvious cause: 30+ of apt-check processes consuming all memory, the OOM killer kicking in, killing vital services. I'm not sure where ...
4
votes
1answer
295 views

Where'd all my memory go? [closed]

After using the laptop for several days without rebooting, I start to get into awful swapping problems (combined with very poor responsiveness during IO operations, swapping 10mb could mean that the ...
0
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2answers
77 views

Swappiness for aggressive swapping

I want to configure the Ubuntu 14.04 with aggressive swapping behavior. I'm using Linux kernel 3.14. I modified the swappiness using the following command. echo 100 > /proc/sys/vm/swappiness ...
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1answer
198 views

I can't use all my RAM!

I know somebody will mark this as duplicate, but I can't find the answer, so I'm asking. I have 3GB of RAM and Ubuntu says: Memory 2.9 GiB. No, it is NOT my onboard graphics card, because it uses only ...