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

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0answers
14 views

iPhone 6 iOS reading mount points unknown?? [on hold]

Im wondering why my iPhone 6 iOS 8.1.2 is reading I have a total disk space of 56.0GB when I have a 64GB memory. What makes up for that non-exsistant memory?? 10MB /DEV/DISK0S1S3 Mount point: ...
0
votes
1answer
12 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?
47
votes
7answers
80k 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 ...
3
votes
3answers
5k 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 ...
0
votes
0answers
12 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 ...
12
votes
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
286 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
votes
2answers
27 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 ...
-4
votes
1answer
78 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 ...
5
votes
1answer
754 views

How can I find the memory usage on my GPU?

Previously I was checking the memory usage on my GPU with the following command: nvidia-settings -q all | grep Memory I am processing some scientific data on my GPU with numpy and theano. I was ...
0
votes
0answers
23 views

Increase Virtual Machine's Hard Disk Memory [duplicate]

Im running Ubuntu 12.04 in my Virtual Box. An error occurs as I copy files using the command below: sudo cp -R /dspace/webapps/* /var/lib/tomcat6/webapps This is the error : cp: cannot create ...
16
votes
3answers
10k 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 ...
0
votes
0answers
14 views

low memory dialog at boot up time

My Ubuntu 14.04 laptop has the below partions /dev/sda1 ext4 9.3G 8.6G 227M 98% / none tmpfs 4.0K 0 4.0K 0% /sys/fs/cgroup udev devtmpfs 3.9G 4.0K 3.9G ...
2
votes
1answer
174 views

unity-music-daemon uses large amount of memory

When I boot my Ubuntu 13.04 up, I noticed that my fans goes crazy and when I had a glanced at System Monitor, I saw that a process called unity-music-daemon is using a large amount of memory and CPU. ...
0
votes
2answers
71 views

Why can't my laptop use more than 85% of my RAM?

I have 1GB RAM in my notebook (HP Compaq 6735s), but the video card is using 256MB, so I'm left with 768MB RAM. However, whenever my system starts using more than 85% of memory, it becomes unusable. ...
0
votes
1answer
70 views

How to read memory usage?

Well I'm pretty confused with the memory usage in ubuntu (probably linux in general) TL;DR: Memory usage is 70%. When ich check top, htop, ps aux etc. I can see there should be a memory usage of ...
21
votes
4answers
19k views

How do you find out which program is using too much memory?

Ubuntu has been crashing on me recently. I think its because it runs out of memory so I ran the free -m command and found that my memory usage was really high. So then, i ran top to find the culprit, ...
1
vote
2answers
6k views

Chrome suddenly using too much memory, what's wrong?

I just upgraded my RAM to double what it used to have and for a couple of weeks everything was running great, but now Chrome is eating all of it, I hit 90% use with only one window and <50 tabs ...
0
votes
1answer
50 views

How do I prioritise physical memory for a particular process?

I have a process which is consuming roughly 13.5GB on a machine with 16GB running Ubuntu 14.04. The available memory according to System Monitor is 15.6GiB, of which 1.7GiB is reported as being used ...
0
votes
2answers
60 views

Understand free command with top command

I have a doubt. I start ubuntu and run free command. I will get the total free space available. Let say it as 100MB. Now I run a few applications. So after some time, I again run the free command. ...
0
votes
2answers
424 views

How to increase JAVA Heap Size?

I need to increase the default java heap size to get OpenNMS Linkd service running smoothly, and fortunately I have 4/5 of my total installed memory free at any given time even when their is maximum ...
0
votes
0answers
75 views

Total RAM discrepancy: who's right?

I started with two 1gb sticks of top quality fast (at the time) DDR2 RAM, rated to at least 800mhz, possible 1000. I've since added two 2gb sticks, making 6gb total. System Profiles (aka cat ...
2
votes
1answer
103 views

Very slow after idle for some hours in 14.04

I had 12.04 without problems, but since I upgraded to 14.04, I'm noting the system is very slow for UI tasks, and when I get to work the next day (computer stays on), and I type the passwords, it ...
1
vote
0answers
61 views

TuxOnIce hibernate error “seeking to free XXXXMB of memory” on Ubuntu 14.04

My desktop PC did not support for hibernate on Ubuntu 14.04. Therefore, I installed TuxOnIce (kernale 3.13.0-36-generic-tuxonice) to enable hibernate feature. Now, the hibernate feature works fine on ...
0
votes
1answer
68 views

mysqld is suddenly taking too much memory and my laptop is getting hotter

I have been using ubuntu 14.04 for a while but really new to linux command line stuffs. I mainly use it for Java/android/web development purposes. Sometimes I notice my laptop gets more hot than ...
2
votes
1answer
68 views

How to find out which programs are taking up alot of memory?

I've been getting messages that I have exceeded my quota limits. I am new to Linux and am not sure what to do. With windows, I could easily just go to Control panel, add/remove programs, and uninstall ...
0
votes
0answers
45 views

How to find and report memory leak

When I use any graphics or diagram editing software like Gimp or Dia (and I have tried a couple more) I suddenly find the cache sucking up all my free RAM and cache which slows the system down to a ...
0
votes
1answer
29 views

find is using a LOT of resources - how do I find out why?

My Ubuntu 12.04 LTS system has been running very slow lately. I keep having to reboot it, and then within 24 hours it's slowed down again. I've gone in and run top and what keeps coming up at the ...
2
votes
2answers
295 views

Deactivating swap file without any computer freeze

I'm currently coding on my laptop: 4 gb of rams, never using more than 2.5-3gb but at times, I'll mess up my programs, run them with memory leaks and they'll make the computer freeze when trying to ...
2
votes
0answers
37 views

Is it possible to suspend applications?

The main idea is to add a "suspend" button to the title(behind the "quit" cross button) of the application window that will copy the memory taken by application to swap/local storage with pid ...
75
votes
5answers
40k 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
votes
1answer
518 views

Ubuntu 14 too high memory usage [duplicate]

I had browse for this issue in the forums, but the answers I found are not concrete or refers to older version of ubuntu. I am using ubuntu 14 (3.13.0-35-generic #62-Ubuntu x86_64 x86_64 x86_64) ...
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votes
1answer
30 views

Why does ubuntu not protect itself against memory shortage

If you create a very simple script, simply pointing at itself ie: /home/user/loop.sh and then executes the script in terminal (as regular user), it starts to consume more and more memory, until the ...
0
votes
1answer
57 views

RAM vs UBUNTU probem [duplicate]

I have a problem with Ubuntu's memory management. I am running 32-bit Ubuntu 13.10. My system is only running Chromium. However, when I run free -m, it returns: total used ...
1
vote
1answer
151 views

How do I get smem to output useful results?

I recently installed smem on my ubuntu server with: $ sudo apt-get install smem It was installed correctly without errors. But when I launch it I don't get any useful information about my ...
0
votes
1answer
115 views

I only have 1GB of ram, what can I do to improve the performance on my 32-bit 14.04 system? [duplicate]

I'm running a fresh install of Ubuntu on an old iMac. It was going painfully slow on OSX so I wiped that and installed Ubuntu overtop of it hoping it would speed things up a bit. I'm not going to be ...
1
vote
1answer
288 views

What is the difference between free and vmstat commands?

vmstat output: procs -----------memory---------- ---swap-- -----io---- -system-- ----cpu---- r b swpd free buff cache si so bi bo in cs us sy id wa 1 1 0 1001568 84736 ...
0
votes
2answers
2k views

What swapfile size to make? I have 4GB RAM [duplicate]

Very often I am out of memory and I noticed that I didn't have swapfile... What size should I choose? I have 4 RAM. All programs which I use are: Firefox, Thunderbird, Grive, Android Studio, that's ...
1
vote
2answers
54 views

How can I reduce the memory

How can I reduce the memory allocated for a given program from the terminal? what I mean is if I have a a.out executable file, how can I make it run in a less memory from the terminal ( with out ...
0
votes
0answers
64 views

RAM usage in Chrome

I run quite a few windows and tabs open is Chrome on a regular basis and while on Ubuntu it seems to seriously bog my system down. 4gb ram and 4gb swap. This laptop is dual booted with Windows 8.1 ...
3
votes
1answer
261 views

How to set a memory limit for a specific process?

I tried to execute mpiexec -16 ... on a 384 GB RAM server, but it induced OOM Killer and was aborted. How can I set a memory limit for mpiexec execution? I know ulimit, but it might affect other ...
0
votes
2answers
98 views

Can't find where memory is being used

I'm still a novice with Ubuntu, and have converted an old Toshiba L655D to use the OS. I have 3gb of memory installed, and this appears on on the GRUB memtest. But within Ubuntu, looking at free -m ...
0
votes
0answers
208 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. ...
1
vote
1answer
31 views

ubuntu server crash after build.sh run

I have a build server with Ubuntu. And in my source code there is typical build.sh to invoke the make file in order to compile the source code. But suddenly the server crashed and I found the below ...
0
votes
1answer
1k views

How to clean up dev/sda1 as it's full

I've been doing jmeter tests and have had a few OutOfMemoryExceptions, so I've bumped up the heap memory in JMeter. But now it seems I can't run anymore tests as it says I'm using 94.9% of 14Gb. When ...
1
vote
3answers
177 views

Like “PerfMon” in Windows do we have something similar in Ubuntu?

If I want to capture performance log of a Ubuntu (or any other Linux Distro) Server/Workstation for a period of time, how would I do that? In Windows, I use something called PERFMON.MSC (LOGMAN.EXE), ...
1
vote
0answers
219 views

Problems after upgrading to 13.10

My laptop has 4GB of RAM and has seen Ubuntu installations since 12.04. I use 64bit version of Ubuntu. I use my laptop for work and has Oracle JDK and eclipse installed - same setup since 12.04 and ...
0
votes
0answers
47 views

s3cmd causing huge memory usage on 12.04 server

Today I installed s3cmd on my server to facilitate backups to s3. Everything is working great, and I even scheduled a cron job to regularly back up. Then I went and checked my Media Temple dashboard ...
0
votes
1answer
208 views

chrome memory and cpu footprint

I've searched the forums for an answer but I couldn't find quite the answer I was looking for [1] , so I thought I it could as well be of interest to more people around here. I carry out a big part ...
0
votes
0answers
49 views

snmpd returns incorrect value for shared memory

I upgraded ubuntu from 12.04 to 14.04. Now my monitor software reports Share memory 100% full. snmpwalk HOST-RESOURCES-MIB::hrStorageDescr.8 = STRING: Shared memory ...