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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fork: Cannot allocate memory
frequently getting 'fork: Cannot allocate memory' when running commands over ssh.
I have 4Gb of RAM and usually 2Gb free. This happens since I've upgraded ubuntu to 11.10.
Drives me crazy already. I ...
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1answer
17 views
ux31a freezes when running out of memory
I have difficulties to understand swap policy. I have installed system (ubuntu 13.04 but 12.10 had same issue) with 4gb of swap partition because ux31a has 4 gb of memory.
Problem is that every time ...
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1answer
65 views
in Ubuntu, why “df” and “du” commands shows different disk usage?
i cannot access ubuntu system on my pc,
the error message: "the system is running in low graphics mode"
and i tried some commands i searched from internet.
i found out a problems seems there is ...
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1answer
155 views
My RAM and CPU's are free but my computer is so slow (Ubuntu 12.10)?
I have 8 Gb RAM and 2 CPU, I install Ubuntu 12.10 on my laptop. The system works strangely. The computer becomes slow for no reasons! I ran top and Htop and there is nothing that uses my CPU or my RAM ...
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1answer
176 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 ...
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1answer
52 views
Can't sync photos from DroidX2 external microSD card
I can't find or select the Camera Directory that is located on the microSD card in my Droid X2 phone from your Android App. It will only allow me to select the Camera Directory on the internal memory. ...
1
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1answer
107 views
Crackling Sound Error
When I had Windows 7 I had to limit the available RAM to 3GB maximum or I'd get crackling sound whenever a sound tried to play. Something to do with the drivers for the Creative X-Fi sound card.
...
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0answers
35 views
Is there a default limit to the amount of memory a process may use?
Running 64-bit Matlab 7.12 on a 64-bit 10.04 Ubuntu Server. When I try run a big problem that should need 46GB of memory (the server has 72GB of Memory and plenty of swap space), the experimental ...
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35 views
Ubuntu 12.4 on 3.4.45 kernel: Can't access USB memory stick
I installed kernel version 3.4.45 [LTS] on ubuntu 12.4 on a Acer laptop. With this configuration, the USB memory drives can't be accessed, some details are follows.
Upon inserting the USB drive dmesg ...
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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 ...
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177 views
Anything sync daemon for Ubuntu?
Is there a utility providing similar functionality to Anything sync daemon for 64bit Ubuntu? Preferably in the repository or with a PPA.
In particular, I'd like to stop Firefox from constantly ...
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0answers
76 views
Problem with the allocated partition memory
I installed ubuntu 12.04 using wubi on to a 60GB partition. I installed Qt sources, which are a couple of GB in size, but once I start commpiling it started complaining about lack of memory.
I ...
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51 views
Inexplicable Slowness
I've been running Ubuntu for about 4 years now, and I'm having a problem with 12.04
Every once in a while the computer will slow almost to a stop, interrupting any playing audio/video, and ...
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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 ...
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84 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 ...
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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 ...
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164 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 ...
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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 ...
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594 views
How to use ram disk for certain application
I have creat ram disk for chrome like this:http://www.kevingunn.org/?p=210
I' d like to use light read on ram disk. What should I do?
1) Most of our commands require superuser privileges, so we ...
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544 views
PAE on Ubuntu 12.04
I am having trouble using PAE on Ubuntu 12.04 LTS 32bit. I recently upgraded from 4 to 8gb of RAM but PAE doesn't appear to have picked this up.
When I run grep --color=always -i PAE /proc/cpuinfo I ...
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263 views
BUG: Bad page state in process
Occasionally I get this error message in the kernel logs. From what I've read it could be due to bad RAM but I did a RAM test and it said it was fine. And the process doesn't crash when the error ...
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36 views
How HP Prolient Ubuntu server 11.0 support 4 gb
I have upgraded the server ram to 4+4= 8 gb, but after the physical installation, I restarted the server and when it came to the login prompt, it showed only 2+2 = 4 gb.
Please Help.
Thanks
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23 views
Is this Ram usage normal?
My system is Ubuntu 13.04 64 bit + Unity and it uses ~600mb with no other processes-apps open and with preload 900mb, just the core system. Is this the expected amount? It seems a bit steep to me but ...
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18 views
is it possible to increase nvidia gfx card memory with “graphics aperture size”?
so, I remember long ago about a BIOS option "graphics aperture size".
I wonder, as I cant find it on my BIOS, if there is some way to let my nvidia gfx card 512MB use some of my ram memory to ...
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21 views
Do Desktop launchers use memory when inactive?
In my old Windows XP life, I noticed that each ¨quick launch¨ icon slowed the sum total down. Is this true in linux? Do I have to keep my start buttons in their menus/folders? I have 768 Mb sdram only ...
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0answers
12 views
Polipo results in Memory Overflow
I have a polipo proxy server that runs on an vServer with 2gb memory. After some time running the memory is full and the server stops working properly.
This there a way to clear the memory regularly ...
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0answers
25 views
Increasing alloted Ram
my laptop has 4gb of ram and by mistake I alloted only 2gb of ram to ubuntu while installing using(WUBI).
I have windows also installed(while starting my laptop I have option to choose windows or ...
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0answers
28 views
12.10 Slow memory clear
After I upgraded to Ubuntu 12.10 I noticed it consumes a lot more memory than 12.04 and when it use swap memory it doesn't clear it when that memory is no longer in use. It just sits there and only ...
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0answers
87 views
Does Ubuntu 12.10 support Flash Cache Modules in older laptops?
I am running Ubuntu 12.10 on an older Dell Inspiron 1420. It's a great little laptop with lots of features that were ahead of it's time (back in 2007)... and Ubuntu runs MUCH faster and smoother than ...
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14 views
Adding memory to a Wubi system-Backing up Ubuntu 12.10
fellow) Ubuntu users, my name is Jay Black, and I have an important question that may benefit a few other people. I have newly installed Ubuntu on my Windows PC(Windows 7) using Wubi,and in ...
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68 views
12.10 Kernel panic
My 12.10 installtion suffers from occasional kernel panics. I was thinking of a RAM issue but after replacing my memory with new 2GB modules the kernel panics still occur.
Graphics and sound have no ...
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96 views
Low Disk Warnings on Ubuntu 12.04
After I upgraded LibreOffice to include Base, I now get warnings about "low disk space".
I am using Ubuntu on a 16GB USB.
For example, when I tried to use my Audacity it couldn't save due to memory ...
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86 views
unable to alter locked memory limit
I've just installed Ardour2, and I've run into the same problem so many people have, which has to do with setting the locked memory limit to unlimited. Here is one of many questions asked about this.
...
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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 ...
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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 ** ...
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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 ...
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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 ...
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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.
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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 ...
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0answers
173 views
8GB of RAM for Ubuntu
I have read the previous posts about the 8GB of RAM issues but I don't find any answer to my question.
I have this configuration:
CPU Intel Core i5-2500K 3.30GHz Socket 1155 95W con GPU Sandy ...
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0answers
168 views
High memory usage from mysqld
I'm running Ubuntu server 12.04 on a computer at home, granted it's a netbook so there's not a lot of performance to squeeze out of it, but I'm still wondering about the memory usage I'm seeing from ...
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0answers
55 views
ubuntu got black-screen
The RAM of My PC is 2GB, when ubuntu is running, it will be used 1.5Gb~1.7Gb, only that 400 or less are free. Ubuntu was running a few minute, the screen become to black suddenly.I don't know why.
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102 views
Howto use different RAM modules in MacBookPro4,1
I read that MacBookPro4,1 can use a 4GB module and a 2GB module at same time making 6GB.
So I purchased one.
It works fine in OS-X, but not Ubuntu 12.04 amd64 (I noticed kernel is currently 3.5).
...
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0answers
32 views
Why are stray images from an older session displayed just after login/logout?
Often when I login or logout, during the short time it takes to complete login/logout some stray and broken images of a previous session are displayed. I am not sure why it happens.
Just a few ...
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0answers
168 views
xubuntu 12.04 boot issue
I finally go a distro of ubuntu (xubuntu 12.0.4) installed on my old laptop. After the restart the GRUB menu appears and I pick my install then all that shows is
[9.274169] [drm:drm_mm_takedown] ...
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451 views
Ubuntu 12.04 - polkitd using 7GB of memory
We have a production web server running Ubuntu 12.04. We have a total of 24GB of RAM installed into the system. The problem is that our process list is showing polkitd as using 6.8 GB of memory. I've ...
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0answers
110 views
Take long time to free the ram
We know ubuntu caches the process file in ram so that she can run faster next time. Most of the mobile device do the same. But problem is ubuntu can not recovery instantly when ram is full. She takes ...
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0answers
86 views
How to examine kernel memory
What's the recommended method of examining kernel memory?
I'm not finding any packages with names like "kdb", "kgdb", or "ddb" that I know from other OS or other Linux distributions. I did find and ...
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0answers
134 views
New Ram & Memory Voltage Readings
I recently upgraded my memory by adding 2 GB (DDR2 - 667 Mhz.) Ram which was completely compatible with my Notebook. (Acer Extensa 5630EZ)
2 x 2 GB was not working together, somehow. Which, ofcourse, ...
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0answers
359 views
Eclipse: Constant, different out of memory errors
I'm having trouble with my Eclipse (or more likely with my java vm) at the moment.
After 5 min of running Eclipse, I'm having constant (different) 'out of memory' errors, mainly saying 'collecting ...
