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.
3
votes
2answers
237 views
How to make ubuntu use more RAM?
After 2 weeks of trying, failing, trying again, still failing, I finally got Ubuntu stable and operational.
My hard disk is quite old and slow but I have excessive RAM (16 GB 2133 mhz), so I was ...
0
votes
0answers
26 views
dmidecode can't find my RAM version
I'm trying to find info about my RAM cards, and specifically their DDR version.
After searching online, I've found the command dmidecode, but when I run:
sudo dmidecode --type 17
I get Type: Unknown ...
0
votes
1answer
119 views
Secure shared memory
In my Ubuntu deployment script I have writen a function to secure shared memory. For a webserver it's important to secure the shared memory to tighten up security. Below you can find the code:
echo ...
0
votes
2answers
132 views
Adding RAM was recognized by BIOS but not by Ubuntu
On a Motherboard that allows max 8GB RAM, 2 slots x 4, 4 of them pre-installed, I added another 4GB in the second slot; BIOS reads 8GB available, but the system info shows only 2.9 GB RAM. How can I ...
1
vote
1answer
191 views
Ubuntu installation in VirtualBox - not using base memory in RAM
I am installing Ubuntu right now under VirtualBox in Windows 7. It is going extremely slow and VirtualBox is only using about 128 MB of RAM out of the 1024 MB I set as Base memory to it.
Is it ...
4
votes
3answers
470 views
Why am I frequently getting this “Cannot allocate memory” error?
I'm using Ubuntu 12.10 with Gnome-Classic. I am getting this error frequently and with almost all programs, big and small. When I try to open them, they don't start, and instead I get an error message ...
-1
votes
2answers
57 views
Swap Files slowing down games
I have a 16 GB Alienware M17X, and every time I try to play a game the game will run perfectly for a minute or so but then the game starts to lag.
Now I believe this is a swap file problem. So does ...
0
votes
0answers
45 views
Only 2.63 GB of 4GB ram UBUNTU 11.10 32 bit [duplicate]
I have 4GB RAM in my system's Intel Core i3 processor. In Ubuntu 32 bit it is showing usable memory as only 2.63GB.I have tried sudo lshw -C memory and memory size is showing 4 GB. What is the ...
0
votes
2answers
1k 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
69 views
/can you install ubuntu to hdd but it runs completely from ram while hdd is not spinning?
my main purpose is to be able to install ubuntu to the hard disc so that my settings and everything are saved but i want it to load itself to my ram for faster operation and better battery life while ...
1
vote
1answer
305 views
Ubuntu 12.10 x64 Doesn't detect RAM properly
I have 6 GB installed, which as a 64-bit OS, it should see, but it only sees 3.5 GB! How do I remedy this?
Output as requested:
seann@seann:~$ dmidecode --type memory | grep -E ...
0
votes
2answers
145 views
Reccomended upgrade for Ram Ubuntu 12.04
I am running Ubuntu 12.04 32 bit on my laptop (Toshiba Sattelite L-450), the spec is as follows
Memory: 2.8gb
Intel® Celeron(R) CPU 900 @ 2.20GHz
Graphics Mobile Intel® GM45 Express Chipset ...
2
votes
0answers
60 views
Why do I run out of memory even when nothing is running?
I am currently facing a problem that when I run Uclust, it keeps showing me mymalloc running ot of memory. The thing is that cuurently nothing is running in the system and my memory shows I am ...
1
vote
1answer
95 views
Ubuntu does not detects the RAM correctly
I have 512MB RAM in my PC. Ubuntu detects only 495 MiB. How can I fix this?
On Debian Squeeze, I was have 512MB.(The correct size)
OS: Ubuntu 12.04 Precise Pangolin
1
vote
0answers
92 views
High Cache and slow Fallout 3 (wine) on Ubuntu 64bit 12.10
My Setup:
Sony Vaio VGN-FW11E with Radeon HD 3470 (tech spec)
3 GB RAM
Ubuntu 12.10 64bit
The Problem:
After a few minutes of gameplay the game is going down in speed to very slow. After quitting ...
-6
votes
2answers
113 views
Why does ubuntu not support useful everyday things out of the box and why does it use a ridiculous amount of resources? [closed]
Recently installed ubuntu 12.10 to try it out.
Used firefox to try to youtube OOPS! No flash support.
Downloaded a mpeg 4 video and tried to watch it OOPS! No support for mpeg 4 video?
Noticed ...
3
votes
2answers
176 views
2 GB Ram, but Ubuntu runs slowly and hangs if doing too much
I think my system more than meets the minimum/recommended requirements for Ubuntu, but its still running slowly. Especially when I try to multitask by having 4-6 windows open, then it becomes quite ...
1
vote
1answer
18 views
Deleting files from connected devices doesn't free the device's storage
A few weeks ago, I bought my tablet and copied files from my computer running Ubuntu 12.04. Somehow, I had to delete some of these copied files to free some memory. But upon deletion from my computer, ...
1
vote
0answers
85 views
Disk cache is sometimes dropped/erased
I have a memory/cpu monitor running, and sometimes see the graph line for “cached memory” drop, for no apparent reason.
Earlier today Cache memory was at about 4.8GB but then dropped in two steps ( a ...
1
vote
1answer
30 views
The limits is restored to the defaults after I reboot
I want to remove "memorylocked" and "maxproc" limits. I am using tcsh shell. I read that if I use "#limit memorylocked unlimited" and "#limit maxproc unlimited" then they will be set to unlimited. I ...
-1
votes
3answers
104 views
What are the most suitable distribution Ubuntu for my computer? [duplicate]
Possible Duplicate:
How do I find out which version and derivate of Ubuntu is right for my hardware in terms of minimal system requirements?
I'm looking to migrate from Windows XP to Ubuntu ...
1
vote
0answers
12 views
System Monitor disagrees with 'free -m' [duplicate]
Possible Duplicate:
System monitor (panel) shows the wrong amount of used ram
When I start up my computer, free -m says I have about 1800MB allocated and 150MB free. In System Monitor, it ...
2
votes
1answer
308 views
How and why should I specify mtrr_gran_size/mtrr_chunk_size?
I noticed today that /var/log/dmesg contains several dozen lines with information about something called gran_size and *BAD*gran_size, followed by what appears to be an instruction for me:
[ ...
1
vote
1answer
177 views
Sluggish desktop/Unity performance on ThinkPad Edge
Fresh (1 week old) install of Ubuntu 12.10 64 bit version on a ThinkPad Edge 15, specs as follows:
System specs (site wouldn't let me hotlink the image)
I think the swap is about 2GB but can't ...
5
votes
3answers
154 views
How do I know which RAM I'm using?
I want to buy some extra RAM but Hardinfo wont tell me which brand, model, latency and speed I'm currently using to buy the same kind.
What else can I use?
0
votes
0answers
35 views
I get an error with AppArmor while upgrading Ubuntu distro
Trying to upgrade my Ubuntu 10.10 to 12.04 but I think its stuck on the apparmor parser -
It tried reloading AppArmor profiles which was terminated in the beginning and I get this:
glibc detected ** ...
3
votes
2answers
109 views
Not recognising 4GB of RAM
I have a pae kernel but free -m only shows 3.2 Gigs of the 4 GB that is physically installed. The BIOS shows 4 GB available. uname -a gives:
3.2.0-35-generic-pae #55-Ubuntu SMP Wed Dec 5 18:04:39 UTC ...
0
votes
0answers
69 views
64 bit 12.10 showing only 2.9 ram. A4-3400 [closed]
mother board is a A55M-DS2
i don't know if it is using the on board motherboard graphics or the built in A4 graphocs processors either.
I am a complete ubuntu newb,
SOLVED:
Hardware issue.
0
votes
1answer
198 views
Ubuntu 12.04.1 (64bit) only recognizes 7.8gb of RAM from 8gb RAM
I know that is a little diference between 7.8gb to 8gb, but still a diference, why Ubuntu dont recognizes all of my RAM? I had the same case with my 32 bit Pc, 3gb RAM and Ubuntu only recognized ...
0
votes
0answers
263 views
Memory usage abnormal in Ubuntu 12.04 server
I have a fresh installed Ubuntu 12.04 server, we don't used it yet, it has 2GB memory and I install Apache + MySQL.
The problem is when the server rebooted memory usage is lower than 320MB but when ...
0
votes
0answers
45 views
Warning when available RAM approaches zero
This is a follow-up to Memory limiting solutions for greedy applications that can crash OS?: ulimit and cgroups are not user friendly, and besides, wouldn't work with applications that spawn separate ...
2
votes
1answer
111 views
Getting specific 'Out of memory!' message when running very involved Perl script [closed]
I'm running a Perl script that parses information from around 7,000 HTML files. Probably not really relevant, but I'm just trying to describe that this is, well, doing a lot of stuff. I originally had ...
1
vote
1answer
144 views
java not allowing for the use of all 8gb of ram
I have a 32bit version of Ubuntu server with PAE active allow for the full use of the 8gb of RAM but I can't use more than 2gb of RAM in Java. I run the command
java -Xms6G -Xmx7G -jar server.jar
...
0
votes
1answer
318 views
Optimization: RAM cleaning and monitoring
Is there any good tools for ram cleaning-purging?
I mean some daemon, that watch on RAM and trying to purge some, if it reached the limit?
Thanks!
0
votes
1answer
78 views
Fresh ubuntu installation - memory usage went from 3% to 41% - should I be concerned and how to remedy?
My memory usage was a 4% after a fresh ubuntu 12.10 installation
after i install php packages etc using this gist, https://gist.github.com/4372049
my memory usage now reached 41%.
should i be ...
0
votes
1answer
181 views
Ardour, system has a limit for maximum amount of locked memory
After installing and starting Ardour I receive the following warning message:
WARNING: Your system has a limit for maximum amount of locked memory.
This might cause Ardour to run out of memory ...
0
votes
0answers
14 views
DMA Tracing - How?
In Linux there is a possibility to trace stuff with /sys/kernel/debug/tracing.
Is there a nice way to trace DMA-Transfers with this feature? Can't find a suitable event.
0
votes
1answer
42 views
Problems booting because the HDD is full. How can I get stuff off my hard drive?
I have used up all the space on my hard drive and when starting up the computer says the only option I have is to start up in basic graphics mode. On the screen it then says stopping system v runlevel ...
1
vote
1answer
25 views
Dbuses and Apaches are using up memory
I recently noticed, in System Monitor, that multiple Apache2 processes are showing up (with the same "Command Line"). There are currently 6 of them, each with 7MB memory. I also noticed a whole bunch ...
0
votes
0answers
52 views
Faulty memtest result [closed]
I've been a bit suspicious about my RAM lately. They seem not work like i expect them to. For instance i run a lot of Virtual Test Environments in VMware Workstation and lately Ubuntu starts to lag ...
1
vote
0answers
33 views
Linux kernel: page substitution policy
I am supposed to answer for homework which algorithm is implemented in Linux for the virtual memory page substitution and also give some extracts of the code to prove that.
After some research I have ...
0
votes
1answer
222 views
Average memory usage after complete ubuntu 12.04 start up
When it starts up completely, I cas see that about 400-500MB of my 2GB Ram is being used.
Right now that I have only started Firefox (and System monitor), I can see that about 1GB of ram is full with ...
0
votes
0answers
122 views
Glibc detected or memory corruption error in ubuntu 12.10
I am using Ubuntu 12.10 64 bit, during kernel 3.5.0-19-generic update configuration in terminal. the following error is seen
*** glibc detected ***
/usr/bin/grub-script-check: malloc(): memory ...
6
votes
3answers
137 views
How to read correctly “free -m” output?
The output of free -m:
total used free shared buffers cached
Mem: 595 482 112 0 63 324
-/+ ...
1
vote
0answers
166 views
I/O memory conflicts
I recently bought a Arctic MC101 barebone (http://www.arctic.ac/en/p/living/office-pc/572/mc101-barebone-a10-4600m.html?c=2296) to run XBMC.
I've installed Ubuntu 12.04 on this machine and the latest ...
5
votes
2answers
142 views
How does landscape calculate memory usage?
I'm trying to debug an OOM situation in an Ubuntu 12.04 server, and looking at the Memory graphs in Landscape, I noticed that there wasn't any serious memory usage spike. Then I looked at the output ...
1
vote
0answers
95 views
Ubuntu 12.04 tilts when trying to open large excel file with libreoffice or matlab
I have an xlsx-file of size 27.3MB and when I try to open it either in Libreoffice or Matlab the whole system slows down
My processor is AMD Sempron(tm) 140 Processor (should be about 2.7Ghz)
Memory ...
2
votes
2answers
2k views
Ubuntu 12.10 and VMware Workstation 9: RAM caching causes severe performance drops
I have read plenty of threads on memory caching and the standard response of "large cache is good, it shouldn't effect performance", "the kernel knows best".
I have recently upgraded from 12.04 to ...
-1
votes
1answer
75 views
10GB installed but only 7.8 is shown
I installed 10GB but my 12.04 LTS 64-bit shows only 10GB.
But the swap shows 10GB so I think internally it did find 10GB? I don't remember exactly how Ubunt calculate how much swap needs by default, ...
1
vote
1answer
239 views
How to increase the disk space of an Ubuntu VMWare guest, without the cd?
I powered off the VM and on the VMware side increased the allocated disk space. I did this by Edit Virtual Machine Settings -> Hard Disk -> Utilities and so forth. It then warned me that I should ...
