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
1answer
81 views
Shutter is using big memory
I included Shutter on my Startup Applications list upon installing the app. For the second time in two days, my laptop would suddenly freeze heavily for a few seconds that I can't even move the mouse ...
0
votes
1answer
2k views
How do I calculate a SWAP partition? [duplicate]
Possible Duplicate:
I have 16GB RAM. Do I need 32GB swap?
Since the late 90s I've always understood that it is best practice to allocate twice the amount of physical RAM as swap space.
I ...
1
vote
3answers
110 views
How to Upgrade from 11.10 to 12.04 when you've got a problem?
I have recently installed 8GB Ram into my ubuntu machine but when I look on the specs it only comes up with 2.8GB of Ram so I want to upgrade to 12.04 but when I try to upgrade it says it can't ...
2
votes
4answers
694 views
How can I run a complete application from RAM? [duplicate]
Possible Duplicate:
Can I use all my RAM for application data?
When I do some stuff in background (unpacking, compiling, backup, etc.) my hdd is under load and for example, Firefox and ...
5
votes
2answers
598 views
How to wipe RAM on shutdown (prevent Cold Boot Attacks)?
My system is encrypted using Full Disk Encryption, i.e. everything except /boot is encrypted using dmcrypt/luks. I am concerned about Cold Boot Attacks.
Prior work:
...
1
vote
1answer
1k views
How do I make a RAM disk?
I want to make a partition that is made of ram ...
Example
In windows 7 you can make a partition that is made of ram
I have created 1 GB of partition in ram . using Primo RamDisk
Is there any ...
0
votes
1answer
202 views
Ubuntu killing processes when no more RAM is available
On an ubuntu box with 4GB, I am running apache with some mpm + mysqld.
Furthermore, there is a postfix, mongod and ocassionaly some imagemagick/convert processes active.
On 99% of the days, that's ...
5
votes
2answers
578 views
Exclude bad ram bytes
I have 5 bytes (or bits, don't know) of bad Ram. How can I exclude these bytes so my Ubuntu 11.10 don't use them. My PC randomly freez, and when I ran memtest it reported 5 errors.
-3
votes
1answer
222 views
Bios Memory settings and Virtualization + Ubuntu (Unofficial Answers Welcome) [closed]
Attempting to optimize my (Main Windowless) Ubuntu system for my uses
I will detail questions below, I understand this might be the wrong place to ask these questions. If so, my apologies and I thank ...
6
votes
2answers
4k views
For a 32-bit kernel, what are the pros/cons of PAE vs. non-PAE?
I am using Ubuntu 12.04 32-bit. My kernels are PAE kernels. I know these are the kernels we can use for 32-bit OS which have 4 GB RAM, to utilize all 4GB of RAM.
My system is a 32-bit system. So I ...
3
votes
2answers
11k views
How much memory (RAM) should I allocate to the Virtual Machine?
I'm installing Ubuntu in a Virtual Box; my host OS is Windows 7, and I have 6GB of RAM on my system. One tutorial on setting up Ubuntu on a virtual machine (this one, on step 14: ...
0
votes
0answers
353 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 ...
3
votes
2answers
3k views
Ubuntu Memory Test
Several months ago I was having issues with a Windows PC. I booted from and Ubuntu CD, performed a memory test, and found that I had some bad RAM.
I'm having some issues with another PC, so I ...
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 ...
4
votes
4answers
8k views
How to impove Ubuntu performance on netbook
Most recent Ubuntu 12.04 seems to be quite nice and Unity (3D/2D) works fine for me, however not on my old Acer Aspire One any more.
There was a times, when I switched from Windows XP to Ubuntu and ...
0
votes
1answer
228 views
Swappiness issues
I just got an old laptop, and I am using it to run a minecraft server, just for the fun, but the problem is it only has got 2gbs of ram, I made a 20gb swap section, set swappiness to 100, but I still ...
4
votes
1answer
520 views
Max ram for computer 16GB or 8GB
Manufacturer's specifications for my notebook say memory can be extended from 4GB to 8GB.
Whereas, running sudo dmidecode suggests the computer can use 16GB as below:
Handle 0x0037, DMI type 16, 15 ...
0
votes
2answers
3k views
Help me i can't format my usb? i have already tried with mkdosfs and gparted
I have a MicroSD card in a USB adapter (which plugs into a USB port on my machine, and acts like a USB flash drive). I was using Unetbootin to make this a bootable USB flash drive with Kubuntu. But I ...
0
votes
2answers
392 views
mpirun -np N, what if N is larger than my core number?
Say I have a 4-core workstation, what would linux (Ubuntu) do if I execute
mpirun -np 9 XXX
Q1. Will 9 run immediately together, or they will run 4 after 4?
Q2. I suppose that using 9 is not good, ...
1
vote
1answer
1k views
Ubuntu 12.04 Slow and low memory
I have an old laptop, a Dell Inspiron 8100, that I use to "play" with Ubuntu on. It is my "learning" machine where I experiment with new OS and such, so it is not critical, but I really want it to ...
2
votes
3answers
3k views
Ubuntu Freezing (Chrome Runs Out of Memory?)
My Ubuntu 12.04 freezes when I open quite a few windows. I use it at work with a dual desktop, so I usually use about 10 different tabs in two different Chrome applications. I assume Chrome runs out ...
8
votes
6answers
19k views
What's the maximum amount of RAM I can use on an specific hardware
I've an Asus U31SD Notebook with an i5-2430M CPU. The Asus site says that the maximum RAM is 8 GB, but Intel's says my CPU supports 16 GB. What is the maximum RAM I can use on this system ...
2
votes
2answers
1k views
System Reports only 4 GB or RAM
To make a long story short, Ubuntu 12.04 64-bit is only detecting 4 GB of RAM even though 8 GB are installed. Here's what I've done so far to rectify the problem:
Replaced both RAM sticks, issue ...
0
votes
1answer
341 views
Upgraded HP Pavillion G7 1317cl with Bios vers F45 to 8GB only 3.3GB recognised in Ubuntu 12.04 X64
Bios and hardware probes indicate 8GB installed. Swapped chip slots with no difference in behavior. DMESG E820 map as follows:
BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: ...
1
vote
0answers
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
3
votes
2answers
2k views
Does Ubuntu support 8Gb of RAM?
I've a motherboard that can accept 8G RAM, But Window only see and use 4G RAM. If I put in my 8G RAM sticks, Will installing a 64bit version of Ubuntu really access most of the 8G's, Or is this a pipe ...
14
votes
2answers
1k views
Is it possible to query maximum ram my mobo takes?
Is it possible to query through Terminal how much ram my motherboard can take?
I'm looking to see if i can even upgrade.
1
vote
6answers
10k views
Is there a program that tells ram usage? [duplicate]
Possible Duplicate:
How can I monitor the memory usage?
I have Ubuntu 12.4 LTS and I need a program that will be able to monitor my ram usage. Any suggestions?
15
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
2answers
590 views
Ubuntu detects only 3.6GB RAM (of 8 gigas) on a 64bit OS (11.04 )
The BIOS detects it fine and shows 8GB. Even lshw shows 8GB memory but somehow only 3.6GB is usable.
Output of uname -a
Linux Prod 2.6.38-15-generic #59-Ubuntu SMP Fri Apr 27 16:03:32 UTC 2012 ...
1
vote
2answers
1k views
12.04 64bit detects 7.7 GB Of RAM Out Of 8 GB
I've Dell Inspiron N5110 with 8 GB of RAM, I installed Ubuntu 12.04 64-Bit.
The problem is that all things are working fine but Ubuntu detects only 7.7 GB of RAM, I've checked & noticed that I've ...
1
vote
1answer
743 views
Conky show RAM without buffers or cache
I am wondering if there's a way to get Conky to show the RAM that is in use minus the buffers and cache.
When I close a program, the RAM usage goes down in HTOP, but in conky it stays the same. So ...
3
votes
0answers
466 views
How much swap do I really need? [duplicate]
Possible Duplicate:
I have 16GB RAM. Do I need 32GB swap?
I have a 4 GB RAM and 300 GB HDD with 8 GB of it as a Swap partition. I'm running 12.04 with hibernate enabled. How much swap do I ...
6
votes
3answers
5k views
Ubuntu 12.04 LTS 32bit does not detect 4Gb ram
I have recently installed 4Gb of ram for an existing 12.04 32bit Ubuntu. It's not being recognised, only 3.2Gb is showing, See:
administrator@Root2:~$ free
total used free ...
1
vote
2answers
2k views
Ubuntu 12.04 questionable RAM usage, mouse lags, windows fade slowly and programs hang…after a few hours things return to normal
I am running 12.04 on a Core 2 Duo T8100 at 2.10ghz with Intel GM965/GL960 integrated mobile graphics with shared memory. I have 3gigs of ram but it normally stays below 1 gig.
Super Key hangs and ...
0
votes
0answers
119 views
Desktop autoshutdown problem [closed]
Hello to all volunteers here. :)
My desktop is an assembled one, forged from Intel Core 2 Duo processor, 2.93 GHz, with RAM of 2 GB. It has a Samsung monitor, and I dual boot Windows 7 and Ubuntu ...
1
vote
1answer
1k views
Having RAM problems, I need a error check program
Lately I've been having a lot of glitches with my computer, and I'm really suspicious about my RAM. I need a program compatible with Ubuntu 12.4 LTS that will be able to check my RAM. Also I've tried ...
0
votes
1answer
95 views
Ubuntu Server: Intel Driver Uses Lots of RAM
I have tried installing Squeeze, Lucid and Oneiric on my new dedicated server (The host doesn't have Precise yet), and noticed that on fresh install they have very different memory usages.
On Lucid ...
0
votes
1answer
645 views
12.04 - memory not fully recognized
This might look like an easy one "get yourself different memory chips", but I'm not convinced:
I set up 12.04 64bit on a new board with 8 GB of memory plugged in. I can see all 8 GB in the BIOS (it ...
2
votes
1answer
321 views
ramdisk, compressed, writeable, no swap
I need a ramdisk who handle transparent realtime compression on write and decompression on read.
Example : I use /dev/shm, or I create a new tmpfs, mount it writeable and compressed.
I wrote and ...
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 ...
6
votes
1answer
2k views
How can I restore the activity monitor? [duplicate]
Possible Duplicate:
What can replace system monitoring in the top Gnome Panel in Unity?
I was wondering if its still possible to get the Activity Monitor for things like load and ram usage ...
2
votes
2answers
2k views
How is possible that Ubuntu 12.04 32bit can see all of 6gb ram
I have Ubuntu 12.04 32bit and system is displaying all of my ram 5.7 GiB, how is this possible?
6
votes
7answers
1k views
Would adding more RAM increase my speed in Ubuntu, and how hard is this to do?
I've got a Compaq 6910p 14 inch laptop with 1GB RAM, 2.0ghz Core2Duo and a Mobility Radeon x2300. I was wondering if
Adding more RAM would help my computer
If I add RAM, will I have to reinstall ...
1
vote
2answers
161 views
How to query the motherboard/mainboard number?
I have a PC with a an old AMD Sempron 3000+ processor on which I wanna query the motherboard aka mainboard model number to check which kind of RAM to buy for it.
How do I do this in Ubuntu 11.10?
3
votes
2answers
1k views
large tmpfs /run partition - must it be so big?
I am running Ubuntu 11.10 desktop on a couple of 8G RAM Wintel boxes. Both have been created automatically by the default installer with a 1.6GB tmpfs /run partition, where I suspect this amount of ...
12
votes
2answers
2k views
Memory limiting solutions for greedy applications that can crash OS?
I use my computer for scientific programming. It has a healthy 8GB of RAM and 12GB of swap space. Often, as my problems have gotten larger, I exceed all of the available RAM. Rather than crashing ...
1
vote
2answers
3k views
Ubuntu 12.04 64 bit RAM usage
I'm looking forward to download Ubuntu 12.04. But which bit version will fit best on my computer?.
Intel Pentium 4 3.06 1mb cache LGA,
Asus p5pe-vm motherboard,
1GB Ram (512+512)
nVidia Geforce 6200 ...
1
vote
2answers
183 views
Swap is not copied back into physical memory
I have a question regarding swap and physical memory. Often times I run a program that requires a lot of memory and as a result I can see some of the data is copied from the physical memory into swap. ...
2
votes
4answers
5k views
Using usbdrive as ram in ubuntu
In windows it is possible to use usb flash drive as a virtual ram. I wonder if it is possible to do so in ubuntu? If it is, how could one do it?
[Edit]: I mean Ready boost equivallent for ubuntu. I ...
