RAM (random access memory), either RAM hardware or software and operating system use of RAM.

learn more… | top users | synonyms (1)

3
votes
0answers
2k views

Attempting to access RAM /dev/mem… says “Operation not permitted”

I am using Ubuntu 12.04 I read the following tutorial on how to access the contents of RAM in Linux.... http://www.rootninja.com/using-dd-to-search-for-strings-in-memory-or-devices/ Code: dd ...
3
votes
0answers
2k views

Down-clock 1600Mhz RAM on Macbook Pro Mid 2009

My Mac (Mid 2009- MacBookPro5,5) installing OS 10.8.2. Currently, it is using 2 x 1GB (1066 Mhz). My friend gave me 2 x 2GB (1600 Mhz) of his 2012 Mac. After installing 2 x 2GB (1600 Mhz) on my ...
3
votes
0answers
56 views

Seemingly inconsistent output from `top` re: Swap header vs. SWAP column

How should I interpret this seemingly inconsistent output from top re: swap? Running free confirms that no swap space is in use: $ free -m total used free shared ...
3
votes
0answers
659 views

Is it possible to use GPU memory as more main memory?

I have a ATI Graphics Card with 1G of RAM. GPU-Z says that 143MB (dedicated) and 75MB (dynamic) is being used on the card (GPU). Is it possible to get your PC to use GPU as more RAM (main memory) for ...
2
votes
0answers
58 views

Not enough memory error with Microsoft Word

Friend's computer (Dell, running Windows 8 64-bit) has been getting a weird error recently; whenever he tries to open a Microsoft Word file from Windows Explorer his computer tells him that there is ...
2
votes
0answers
139 views

How to force the Linux kernel reclaiming cache memory rather than using swap?

I have a PostgreSQL-driven web service on two Debian servers, one a vhost running Linux kernel 3.2.0-2 with 2GB RAM and the other a dedicated server running Linux kernel 2.6.26-1 with 6 GB RAM. ...
2
votes
0answers
50 views

MemTest86+ bad adresses constant despite swapping sticks, processor/MOBO to blame?

(Sorry for the wall of text, but people seem equally critical of missing details) After about 2 years without trouble, I've been having issues recently with system instability, BSODs, random ...
2
votes
0answers
2k views

Perf samples too long, lowering kernel.perf_event_max_sample rate to

My machine freezes from time to time and I can get it working back by pressing the space key. I have this problem since two weeks now, but it was just once per day max. Now it's starting to be many ...
2
votes
0answers
68 views

Utilizing the full power of my workstation

I am not a gamer. Used to be, 10+ years ago. My workstation is strictly for business: Quickbooks Excel Access General Business QuickBooks is tied to a synchronization engine that is synchronizing, ...
2
votes
0answers
102 views

What desktop computer hardware specifications are most important for database heavy applications?

I am purchasing a new personal desktop computer with the hope of improving performance for database-heavy applications (mostly data mining). I will want versatile hardware for all sorts of future ...
2
votes
0answers
305 views

Sony Vaio VPCEE2E1E memory upgrade issue

I own Sony Vaio laptop VPCEE2E1E and I recently upgraded RAM MEMORY from default 3GB to 4GB after that operation I'm facing serious problem with performance.Windows shows that I have only 1.74GB ...
2
votes
0answers
924 views

Random BSOD crashes when all RAM slots are occupied

Although I'm a long term user of other StackExchange sites this is my first question on SuperUser, so please let me know if I've neglected any community customs I am experiencing regular BSOD crashes ...
2
votes
0answers
221 views

Apache memory usage never goes above 5%

I'm deploying an application that uses ImageMagick into VPS server. I tested in on two different OS: Centos6 and Ubuntu Server 12.04. On Centos6, the application is working properly and when ...
2
votes
0answers
545 views

What's so special about `hal.dll+12a3b`?

I have a BSOD/STOP 0x124 problem that keeps haunting me for a very very long time: It always happens at address hal.dll+12a3b. In my searches for an explanation/solution, I found suggestions that ...
2
votes
0answers
300 views

Mac suddenly says I'm out of space, and terminal says low on swap space

I'm running a pretty dated Mac but its what I have and can't afford throwing hardware at the issue. I am on Mac 10.6.8 Suddenly Terminal says Terminal has detected the system is running low on ...
2
votes
0answers
296 views

Random freezing caused by khugepaged?

I have a fairly beefy Arch Linux computer, kernel 3.7.7-1-ARCH. However, recently it's been having random freeze ups. Never common, but it'd freeze for a good 15 seconds where no program is ...
2
votes
0answers
53 views

Using the heap command line tool

I am getting a crash while using libgmalloc and I get a complain which says something like Failed to VM allocate XYZ bytes Explicitly trapping into debugger!!! Now I when I encounter this ...
2
votes
0answers
320 views

Seagate external hard disk does not power down

When my computer is off, this external hard disk remains on, consuming power. It is permanently warm, and inside components are active (perhaps the fan?). I have a UPS for the system so a complete ...
2
votes
0answers
261 views

Overheating RAM, ddr2 motherboard 2 slots

Recently, I bought a new memory stick to speed up my machine, which is the exact product that I have been using. The problem is either of the RAM overheats like after 5 minutes once my computer turns ...
2
votes
0answers
172 views

Unusual memory usage spike

Ok, on Windows 7 64 bit, I basically use Firefox to browse the web, with a DSL broadband connection.Sometimes while surfing, I see the computer slows to a crawl for a few minutes and then goes all ...
2
votes
0answers
75 views

How big is PATA throughput on original Macbook Air (Rev A)?

I still have one of the original Macbook Air's that I use sometimes. It's got 2Gb of RAM and whenever it's filling up and starts paging, the whole things becomes barely responsive. I've heard SSD's ...
2
votes
0answers
429 views

How many RAM Hardfaults is too many?

Trying to play BF3, sometimes seemingly randomly, it will start lagging. I assumed despite 4GB of RAM, it might be hitting its max. I just however noticed a lot of RAM Hardfaults. Is this a lot, or ...
2
votes
0answers
206 views

Asus P4B SDRAM Upgrade

I have to fix a PC for a friend - and - bought RAM because 256 MB SDRAM PC133 is not enough for WinXP. I bought 2x 512 MB SDRAM PC133. If I insert one stick, it doesn't matter which one, the PC won't ...
1
vote
0answers
23 views

IIS 8.5 PHP 5.6.2 x64 Fatal error: Allowed memory size of… if imagick is enabled

I changed from PHP 5.6.2 x86 (nts) to x64 (nts) on IIS 8.5 and I got almost every extension to work except imagick. I tried to update imagick binaries to the latest x64 dll version ...
1
vote
0answers
9 views

Can vSwap and Burst RAM coexist on an openz container

I notice some VPS hosts offer vSwap or Burst. I was wondering if possible that a container could and would use both vSwap and Burst. How would this work in allocating which RAM space is used?
1
vote
0answers
77 views

Memory not compatible with motherboard?

I've been getting BSODS on my computer and have tried everything that I can think of to find out what's causing... My motherboards memory compatibility list is: ...
1
vote
0answers
31 views

How to diagnose dual channel memory / motherboard?

I have ASUS P7P55-M with 12GiB of memory, but it sees only half of it: dims@sagittarius-a:~$ cat /proc/meminfo | grep MemTotal MemTotal: 6102272 kB Simultaneously, it is visible from OS ...
1
vote
0answers
42 views

My PC blacks out randomly. Screen says “No Signal”, fans and LEDs are running

My PC blacks out randomly. After running for maybe 1hr or so the monitor blacks out and displays "No Signal". Audio also stops and I am unable to turn off the PC with keyboard shortcuts. The green LED ...
1
vote
0answers
27 views

IOMMU cache coherency

In today's x86/x64 motherboards there can be found IOMMU's from Intel and AMD. They allow peripheral devices to perform DMA (direct memory access) operations into system RAM using virtual instead of ...
1
vote
0answers
16 views

Computer froze with black screen when viewing (not editing) video card's memory in Cheat Engine

I was looking at my computer's physical memory in Cheat Engine (a memory editor/debugger application) and I decided to look at the addresses that Device Manager says are used by my video card. When I ...
1
vote
0answers
23 views

Is there a way to “undercommit” memory in Linux (VPS burst memory woes)?

I've been noticing occasional drastic performance hiccups in my application hosted on a VPS. My VPS plan has 1GB guaranteed RAM and 1GB "burst" RAM. Occasionally the app will become extremely ...
1
vote
0answers
75 views

How to keep Linux kernel responsive while having high memory usage?

Sometimes I have a lot of programs running and despite of 16GB 8GB of memory my ubuntu linux 14.04 LTS turns out to be not responsive at all. I won't be able to get a TTY to kill some processes to ...
1
vote
0answers
290 views

Increase maximum locked memory for unprivileged user

I am trying to configure Ardour3 for Ubuntu Trusty 64. I get the following error: I have tried: root ulimit editing limits.conf This is my /etc/security/limits.conf: # ...
1
vote
0answers
30 views

Analyzing the actions of a running program

Do you know a Windows software (or several) that can analyze what a running program is doing ? For example, detecting if the program is connecting to the Internet (and to what), of sending data via ...
1
vote
0answers
61 views

137 MB hardware reserved memory 64-bit OS with external graphics card

First of all, I have 64-bit OS, so it's not the 32-bit limitation of 3.5 GB. I have 2x2GB RAM sticks, when I was using the iGPU, I was assigning (128MB + 2MB GTT) for it but the hardware reserved ...
1
vote
0answers
68 views

Process tree CPU history usage, process tree memory usage (aggregated) on Windows 8.1

This question is general for Windows OS, but I would like to see a software for Windows 8.1, since this is what I use. I'm looking for software, that will take a process tree (e.g. Chrome.exe ...
1
vote
0answers
88 views

Should the CPU usage go up to 100% when swap happens on Linux

I had been running a demo system on Linux with the following kernel: 2.6.32-400.1.1.el5uek #1 SMP Mon Jun 25 20:25:08 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux And as soon as swap happens, the CPU ...
1
vote
0answers
23 views

How can I see the correct “private bytes” value in process explorer?

I have a process that intentionally uses large amounts of memory. When I view this process in Process Explorer's list view with all memory-related columns enabled, this is what I see: Note that all ...
1
vote
0answers
249 views

So-DIMM to DIMM adapter?

I have some nice 4GB SO-DIMMs from a broken workstation laptop that I would like to put to use in my desktop. Would this be possible? I did a bit of googling and found a SoDIMM to DIMM adapter on ...
1
vote
0answers
113 views

Dropbox on a Truecrypt volume eats over 6 GB of RAM, possible memory leak with memory-mapped files

I am using Dropbox with my folder on a Truecrypt volume on an HP Pavillion Touch 14-N009LA with an AMD A8-4555 APU, 8 GB of RAM and Windows 8.1. When I run Dropbox, after about 15 minutes my RAM usage ...
1
vote
0answers
23 views

Apache and MySql datbase memory consumption issue with Django

I'm writing a relatively simple web-application as a learning project to learn Django, Apache, Mysql etc. in practice. It consists of a web flash/html5 client which makes two API-calls to Django ...
1
vote
0answers
193 views

Computer suddenly won't detect half the RAM

I have a System76 wilp9 machine running Ubuntu 14.04 which came with 32GB of RAM installed. When I rebooted it today, it displayed a warning that the memory decreased, and now both the bios and linux ...
1
vote
0answers
95 views

Bsod on 2400 Mhz ram

I recently built a new pc. My pc shuts down randomly and I see a blue screen saying something about "windows has shutdown to prevent damage on itself" the screen only shows for 3 seconds or less, so ...
1
vote
0answers
46 views

How to keep mysqld alive with minimal memory?

I have a rackspace server that I have been renting to run my personal projects upon. Since I am cheap, it has 256Mb of RAM and honestly can't handle a lot. Every once in a while, when there is a sharp ...
1
vote
0answers
74 views

Will this RAM work with my Intel mobo (DX58SO)?

I'm planning to add three DIMMS so I have 12 GB triple channel. Memory is: 4GB Module - DDR3 1333MHz Part Number: KVR13N9S8/4 Specs: DDR3, 1333MHz, Non-ECC, CL9, 1.5V, Unbuffered, DIMM, ...
1
vote
0answers
41 views

How much memory is used for a particular process

I am using qsub for submitting jobs on the cluster(SGE). What i want to know is when i submit a qsub job and after it finishes, I want to find how much memory it actually uses up so next time I ...
1
vote
0answers
3k views

asus motherboard: one long beep, 3 short beeps, one short beep

When my computer starts, monitor shows no signal, you can hear the computer trying to do something (almost sounds like starting a car with multiple tries). Then I hear one long beep, three short beep, ...
1
vote
0answers
29 views

What is exactly shown by “perf” as page-faults?

I want to count the number of disk accesses during a complete run of my script. My bash script runs 2 other executable files locally and 2 other executable files remotely. something like this (those ...
1
vote
0answers
72 views

Extra memory slows my laptop to a crawl

I have an Acer Aspire "TimeLine" 4810TZ, model MS2271 running Windows 7 (64-bit) with 3GB of RAM, which is comprised of a 2GB and a 1GB SODIMM - Both DDR3 with a frequency of 1066. I was told that my ...
1
vote
0answers
54 views

Saving a log of console-mode Memtest86+ run

To debug mysterious failures with my workstation, I've booted it with an Ubuntu LiveCD and ran Memtest86+ in console mode. It found many errors. To isolate the defective sticks I need to send the lab ...