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.
2
votes
0answers
37 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 ...
3
votes
2answers
7k views
MicroSD card is set to Read-only state. How can I write data on it?
I have a MicroSD card reader in my notebook. When I insert a MicroSD memory card into it, I can't write any data on it - it's read-only. The same thing happens when I try to do it under root. And I ...
1
vote
1answer
30 views
Ubuntu Compatibility
I'm in the process of building a computer for a customer who has requested Ubuntu 13.04 to be installed could someone tell me if the following components are compatible.
CPU: Pentium G2020
...
0
votes
1answer
27 views
New computer installation problems
I've just bought a new desktop computer:
Gigabyte 970A-DS3
NVIDIA GeForce GTX 650
AMD FX8350
RAM: 16 Gb
I'd like to install 13.04 64-bit, but when I try to install, mouse doesn't work at all ...
2
votes
0answers
36 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 ...
0
votes
1answer
134 views
Ubuntu 13.04 uses too much RAM
I use ubuntu 13.04 upgrade from 12.10, the problem is that ubuntu starts with a consumption of 300 mb ram but rises up to consume all my ram, 1.7 1.8, especially compiz and never so close low ...
0
votes
1answer
50 views
Memory allocation of C++ in Ubuntu
First of all, I'm sorry if the question doesn't belong here. I want to make sure whether this issue has to do something with my Ubuntu.
The C++ code below makes 2621440 integer variables. Each ...
1
vote
5answers
196 views
Ubuntu 13.04 ram and CPU maximum support? [closed]
I'm learning about ubuntu, but I do not know the ubuntu 13.04 Ram and CPU support up to how much??? hope you help me
1
vote
1answer
18 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 ...
0
votes
2answers
66 views
Is there anything I should know before changing out my ram sticks? Ubuntu 13.04
Okay 1st off let me start by saying I have only been using Ubuntu..or Linux in general for about 3 months but in an effort to get the most out of my old tower I have decided to upgrade my ram ..I have ...
0
votes
1answer
26 views
RAM slot free or not
This question might not be so relevant here, but I want to know if there is some command tool that gives me the currently available RAM slots in my machine, also if any of them is free, and ...
2
votes
2answers
1k views
How can I dump all physical memory to a file?
I am using Ubuntu 11.10, and wish to simply know whether I can dump all physical memory and swap, as due to some kernel restrictions, I can't dd /dev/mem, even as superuser. Is there any workaround or ...
0
votes
1answer
43 views
How to launch google-chrome with custom parameters by default?
I want to launch chrome and chromium from the unity launcher with the --purge-memory-button option.
For chromium I was able to add the above parameter to /etc/chromium-browser/default but that's not ...
4
votes
2answers
134 views
How can I measure how much RAM has been used by a command
I'm trying to measure the memory of a process that I call via the command line (i.e., I want to find out much RAM it takes to for the process ). Is there any command that I can add to the command ...
0
votes
0answers
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 ...
14
votes
5answers
15k views
0
votes
2answers
57 views
How do I change how much disk space Ubuntu has?
I installed ChruBuntu on my Chomebook Acer C7 about 2 weeks ago and I chose to allocate 10 gigs. I didn't know that that would be my amount of disk space I would be allowed to use. I want to install ...
-1
votes
1answer
33 views
How to allocate more memory! [closed]
I really need to allocate more memory to Ubuntu. When I was installing it in the command prompt it asked me how much I wanted to use (1-299 or something) I chose 10 but now I really want to change ...
25
votes
5answers
4k views
Drawbacks of using preload? Why isn't it included by default?
I would like to know what are the drawbacks of using preload? If there would be no downside, preload would be enabled by default, so I guess there are some.
Okay you need a bit more RAM, but most ...
5
votes
1answer
3k views
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 ...
1
vote
1answer
45 views
Available RAM not being used
I am running a program that takes a significant amount of time to complete. According to my system monitor, only 20% of the available memory is being used (1.6GiB out of 7.7GiB available).
I'm ...
0
votes
2answers
65 views
Ubuntu stores variables in the wrong order
So I had this exercise in my class where I had to tell which of the two addresses is bigger when I create two char's in a main function.
Because local variables are stored in the stack that starts ...
21
votes
5answers
11k views
Why does Ubuntu only show 3GB of RAM?
I have an Asus G50vt-x5 laptop with 4GB of RAM installed. But Ubuntu 10.10 shows only 3GB of RAM. Why is it only showing 3GB of RAM instead of the full 4GB?
output of free command is :
neal@ubuntu:~$ ...
2
votes
1answer
2k views
How can I check how much space there is left on WUBI versus how much space it takes on my HDD?
Using 11.10 for the record. It would be easiest to do it on the Terminal.
11
votes
4answers
1k views
How to fully utilize RAM to increase overall system performance
I have a low profile machine but with a lot of fast RAM, 4 Gb, which is really an amount of memory that i probably will never use, not even an half, since i just use this machine for coding and ...
0
votes
0answers
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 ...
0
votes
1answer
74 views
Do I have to uninstall NVIDIA drivers before replacing with an AMD GPU?
Here is the setup:
Old Intel motherboard (DG33FB) with PCI-X 1.0
2 GB DDR2 system memory
580 W PSU
Intel Core 2 Quad 2.4 GHz
Here are the observations*:
I had thought there was no POST or BIOS ...
1
vote
2answers
1k views
Ubuntu 12.04 does not recognize Kingston DT108 16GB memory
I bought a Kingston DT108 16GB and Ubuntu did not recognize it.What should i do??
Output of dmesg | tail after connecting pen drive
[ 1455.253010] CPU5: Package power limit notification ...
74
votes
17answers
24k views
I have 16GB RAM. Do I need 32GB swap?
I read many places that the rule of thumb for swap space is to double the amount of physical RAM. However, 32 GB does seem a LOT. Do I need that much? Do I need it at all with this high amount of ...
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
4answers
102 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 ...
0
votes
0answers
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 ...
-2
votes
1answer
43 views
I have 4 gigs of ram but there seems to be 3 usable [closed]
I have 4 gigs of ram but there seems to be 3 usable. I think this changed since I messed with some PAE stuff about the kernel.
Any help is welcomed.
1
vote
2answers
677 views
Error formatting volume with my microsd
Error creating file system: helper exited with exit code 1: cannot open /dev/sdb1: Read-only file system
This what I get when I try to format my MicroSD. How do I remove the Read-only file system on ...
0
votes
0answers
18 views
Graphics card only show 256mb insted of 512mb [duplicate]
I have a HD5450 with 512mb. But lubunto only show that it has 256mb memory. How can I correct this? lubuntu 12.04
0
votes
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 ...
1
vote
1answer
66 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 ...
0
votes
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 ...
3
votes
2answers
2k views
Which is correct for VirtualBox memory usage: Windows Task Manager or System Monitor?
I have configured my Ubuntu VirtualBox install to have a base memory setting of 512MB. When running this install, its fairly sluggish in a way that feels like its thrashing memory. In other words, ...
12
votes
1answer
250 views
Customizing Ubuntu to run from RAM only, within GRUB options
I'm interested in exactly this up, now let me explain what would like to do with this. I'm preparing to buy 32GB of RAM and already have Quad Core. My idea is to implement another option in GRUB that ...
1
vote
1answer
43 views
Need application/script alerting when system memory is running out
I don't won't to use swap file (due to some bug in kernel or AMD driver).
I wan't to have some util running and monitoring free system memory and alerting me when it becomes less than some specified ...
0
votes
1answer
41 views
The system freezes sometimes/randomly, when I browse a HTML5/CSS3 website in Chrome
My laptop has Intel B960 (2.2GHz x 2) with 4 GB RAM. OS is Ubuntu 12.04 with all updates to current date.
I am getting a peculiar issue since about 2 weeks - when I browse a HTML5/CSS3 website in ...
16
votes
3answers
4k views
What is a segmentation fault?
In Ubuntu I have faced the segmentation fault error many times. What is a segmentation fault and when does it occur?
1
vote
1answer
306 views
Only 24GB of 32GB RAM showing on Server 11.10
I just installed Ubuntu Server 11.10 64bit and when I execute free -m it only shows a total of 24094.
This is a fairly new build and I was able to see all 32GB on Solaris 11.
total ...
0
votes
0answers
19 views
Running Ubuntu in USB but with a lot of RAM; how to run program from RAM? [duplicate]
I installed Ubuntu on a usb drive and run it with my laptop, which has over 10GB of ram. The system is rather slow. I would want to run some major programs like Chrome directly from RAM instead of the ...
3
votes
1answer
50 views
what will happen If RAM set to 1000 from 1024?
While I am looking at man page of free I came across
--si Use power of 1000 not 1024.
So from that line we can say that from 1GB(1024MB) of RAM it will use only 1000MB of RAM. But why we are ...
1
vote
1answer
93 views
What is the maximum amount of RAM that Ubuntu 32 Bit supports?
Intel Xeon E5-1620 OCed to 4.75GHZ
Asus P9X79 Pro
8GB 1333 7-7-7-20(Thinking about 24GB)
I am considering to install Ubuntu.
Will the 32Bit version support more RAM than 4GB?
0
votes
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 ...
0
votes
0answers
27 views
Server slowly runs out of memory [duplicate]
My Ubuntu 10.04 server slowly eats up memory. If you look at tops, it slowly starts using swap space. Eventually the amount of free memory drops too low and the kernel kills the worst process.
A ...
1
vote
1answer
156 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 ...
