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1
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1answer
16 views

Windows 2008R2 raising low memory events when 50GB of RAM is available

Observed Windows 2008 R2 is generating KernelObjects\LowMemoryCondition events when there is 50GB of RAM available and all processes are using just around 18GB. Not able to find the reason why ...
0
votes
0answers
28 views

Prevent a closed source chosen process from swapping on Windows [duplicate]

When I run VirtualBox If I don't use VirtualBox for some time and then I come back to using it the virtual machine runs very slowly, obliviously all subsequent operation go enough fast. How I can ...
44
votes
5answers
24k views

How to disable Mac OS X from using swap when there still is “Inactive” memory?

A common phenomena in my day to day usage (and several other's according to various posts throughout the internet) of OS X, the system seems to become slow whenever there is no more "Free" memory ...
1
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1answer
20 views

Where are Page tables stored

My question is "where are the page tables stored: in physical memory (RAM) or as some data structure in User space". PS: What I have understood so far: A process memory layout has few segments ( ...
2
votes
1answer
370 views

What I should know about memory management?

first of all: I don't use stackadmin or similar so please don't vote for moving there, I'm reading man top and paper "what every programmer should know about memory ..." I need really simple ...
0
votes
1answer
27 views

Is CPU cache (L1 - Ln) equal to TLB

If we are talking about CPU cache. Is Ln synonym for saying 'TLB (translation lookaside buffer) of type Ln' or does Ln include also somethin else than just TLB?
1
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2answers
52 views

Can I use Nand flash as a swap memory in Embedded Linux?

I have 128 MB of Ram in one of my products, which was sufficient when we released first version of the product. But now we added some extra features in it, So this much Ram may cause a problem of OOM. ...
0
votes
1answer
881 views

High RAM usage by Windows 7

I am running 64-bit Windows on an 2.2GHz 2nd generation i7 and 8GB of RAM. When I first boot up, the RAM usage is 25-30%, which is reasonable, but after about two to four hours, it may go up to ...
0
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0answers
41 views

ReadyBoost : How a Software Component Helps Boost the System Performance by Exploiting Flash Memory as a Cache?

One of the nice feature of windows 7 for low memory system is ReadyBoost, a software component that uses flash memory as a cache to actually speed up the the performance(Ref-Wikipedia). But If we ...
0
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0answers
39 views

99% used memory, but 70% of unused allocated memory and 97% swap available: what can I do?

In a server with 48GB of RAM, when I run top, I see that less than 500 MB are free (1%), whereas when I sum up the column of % of memory used by each process, it is around 30%. Since only the 2.7% of ...
2
votes
3answers
1k views

Is it possible to make the OOM killer intervent earlier?

I try to tweak my development system to maximal reliability. I disabled swap, because for GUI usage it mostly renders the machine unresponsive in such a way not useable anymore. Nevertheless, if ...
2
votes
2answers
131 views

Sources of Linux memory usage not in /proc/meminfo

I’m running a Linux server that shows weird patterns in memory usage that I’m trying to investigate. During normal operation, around 200MB of memory are used for applications according to munin, but ...
1
vote
1answer
4k views

NTFS Partition gets auto-corrupt, becomes RAW and unreadable

I have dual boot on my machine: Windows 8 and Ubuntu 11.10. Suddenly, one of my partitions went corrupt. On Windows, it's showing this error. Location is not available. E:/ is not ...
0
votes
0answers
15 views

BSOD MEMORY_MANAGEMENT

I'm getting a BSOD very frequently on my desktop computer. Is there any way to know what the problem is from the BSOD information? I found the information not really useful. I will try with some new ...
8
votes
1answer
156 views

Which files are cached by linux?

I understand that linux uses unused RAM to keep some files cached. But I wonder, which files it actually caches! If you take a look at free : Gesamt Belegt Frei Gemeinsam Puffer Cached Speicher: ...
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votes
1answer
39 views

memory mapping to physical ram (hardware)

When the memory management unit translates a logical address to a physical address using the translation table, how does the physical address get mapped to that address in ram. What I mean to say, is ...
0
votes
1answer
58 views

Windows - How can I flush modified memory?

This is a follow up on my previous question, here: Windows modified memory without a pagefile - Super User I have no pagefile and a lot of modified memory according to resource monitor (Win 7 x64). ...
0
votes
0answers
54 views

Windows 8.1 Waiting Lock Pool Tag FLwl - High Memory Usage

I am running Windows 8.1 with 8gb of ram and have lately been experiencing crashing issues with windows explorer when RAM utilization is over ~73%. I have run poolmon.exe to see if there are any ...
0
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0answers
84 views

PCI Express BAR memory mapping basic understanding

I am trying to understand how PCI Express works so i can write a windows driver that can read and write to a custom PCI Express device with no on-board memory. I understand that the Base Address ...
0
votes
1answer
52 views

Windows modified memory without a pagefile

How does Windows' modified memory work without a pagefile? The physical memory is modified and then...? I'm running Windows 7 with 16GB of RAM and no pagefile. I have about 2.5GB of modified memory, ...
0
votes
2answers
158 views

High Disk Usage while cleaning out “modified memory” on Windows 8

I am looking at the resource monitor tool of Windows 8. After closing a VMWare-VM, the "modified memory" jumps from 16 MB to 2GB. It slowly goes back down to 16 MB. While going back down, the disk ...
1
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0answers
33 views

Calculate bandwidth for a crossbar system

Not quite sure which StackExchange community this question would fit it. I had an midterm last week where I had a question I still don't quite understand, and I hope to get some help here. So the ...
5
votes
3answers
564 views

How to know which program or service take long time at and after PC Starting?

I want to identify which program consumes and takes computer resources on a Windows 7 during start up and after logging in, because after I log in my hard disk LED stays lit for almost 5 minutes. I ...
8
votes
1answer
283 views

increase desktop responsiveness on linux while swapping

All GNU/Linux distributions I tested so far have the problem that whenever the ram gets filled and the system begins swapping, the whole desktop and graphical user interface becomes unresponsive as ...
0
votes
1answer
1k views

Limit memory allocation for process

I'am running Windows Server 2008 R2, and I would like to limit the allocated RAM memory space for a specific process, i have installed "Windows System Resource Manager" but i can only view the ...
0
votes
1answer
72 views

How is HDDM (not RAM!) accessed, modified and addressed in modern computers? [closed]

Warning: yeah, I know that article of Wikipedia. It's just too difficult for me! I hope that there is some person who could explain it more simply... Background: I designed a 6-bit computer. It has ...
0
votes
0answers
32 views

What is the name of the range of cells that are actually loaded into memory in Excel?

I keep thinking it's called Visible Range but I doubt that's actually it. Basically I'm trying to find out what the cells that are selected when you press CTRL+Left Arrow is called.
1
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1answer
156 views

Find out the sum of memory hogging process

As I'm always without memory on my PC I'd like to find out once for ever which is the most memory hogging program. The problem is that opening the task manager (I'm on Windows 7) doesn't seem to help. ...
0
votes
0answers
34 views

Low memory bandwidth

I have ddr2-667 ram and I measured my memory bandwidth via STREAM tool. Here is my results: Function Rate (MB/s) Avg time Min time Max time Copy: 2229.0490 0.0158 ...
0
votes
3answers
367 views

Mozilla Firefox memory Problem

When i run Firefox.. with the passage of time it continuously keeps on increasing its size in memory until it has consumed all the RAM.. no matter if i open and close 20 tabs or there is just one tab ...
1
vote
2answers
610 views

How to activate swap on Linux? “swapon -a” doesn't seem to work?

My computer has quite some memory (6GB) which is enough for most of what I do. A while back I was messing with my swap, turning it on and off with sudo swapon -a and sudo swapoff -a. In then end I ...
0
votes
0answers
20 views

Windows 8 and memory consumption [duplicate]

My current system should have enough memory (4GB), but it's the lower average right now and if I want to run multiple applications at once - which is needed - memory is getting scarce. In addition to ...
1
vote
3answers
962 views

Windows 8 and memory consumption [closed]

My current system should have enough memory (4GB), but it's the lower average right now and if I want to run multiple applications at once - which is needed - memory is getting scarce. In addition to ...
0
votes
1answer
170 views

Memory usage classification under Darwin (Mac OS X 10.8)

on Mac OS X using Memory Clean, I can behold this memory usage stats chart: While the meaning of active and free seems to be clear, what do "wired" and "inactive" memory refer to?
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4answers
13k views

How could I limit or even disable file cache on Windows Server 2008R2?

There is a machine, with a very fast RAID array, and a fast internet connection. But, it only got 8gb of mem, which runs out really quick, when the upload goes up. Any ideas how could I disable, or ...
0
votes
1answer
3k views

Windows Word says, “There is insufficient memory or disk space. Close extra windows and save your work”

While pasting an image in a Microsoft Word Document, I got this error message: I was only having Microsoft Word, Windows Paint, Google Chrome and Windows Explorer open at that point of time - ...
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votes
1answer
137 views

Python - Releasing/replacing a string variable, how does it get handled? [closed]

Say i store a password in plain text in a variable called passWd as a string. How does python release this variable once i discard of it (for instance, with del passWd or passWd= 'new random data')? ...
2
votes
2answers
34 views

8 or 12 gb when dealing with mat

I had a huge problem with my computer BSODying all the time and all the times it seemed to be a memory problem. I have 16 gb RAM (4*4) and checked each of my modules individually with memtest86 and ...
1
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0answers
74 views

SQL Server Continues to Swap RAM After Using a Virtual Machine

I have a dev computer running Windows Server 2008 R2 Enterprise and SQL Server 2008 R2 Enterprise, with 8GB of RAM. As I write code and use the database, SQL Server will use more-and-more RAM (which ...
1
vote
0answers
216 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 ...
1
vote
1answer
94 views

Sharing RAM/G5 Desktop/iMac [closed]

I have a Mac G5 Desktop with 14GB of RAM installed which I sometimes use as a start up disk. I have a 27" iMac 2.8GHz Core i5 with only 4GB of RAM installed. Is there anyway I can access/utilise the ...
2
votes
1answer
132 views

What resource am I lacking? Causes notepad to be missing menu, or programs to not open

At this point when a notepad window is like that with no menu, I can't open another notepad either. After closing one or a few cmd prompts. Or after closing an add/remove programs window, or a ...
0
votes
1answer
38 views

When Should I Upgrade My AWS MySQL Server?

We have a server system that currently consists of 1 Apache server that is attached to a load balancer and one MySQL server that is by itself. Both servers are AWS Micro Instances. Everything is ...
0
votes
1answer
228 views

How does FileStream appends physically works?

I was dealing with a prepending problem and suddenly leads me to think about this question.... Maybe not only related to FileStream, I want to know how we actually appends binary into a file ...
0
votes
2answers
477 views

Empty/dump modified memory to pagefile in windows

I use process hacker to clear out a few gigs of ram before loading large files such as 2GB stack traces so that everything does not freeze up for an hour as stuff gets swapped back and forth. However ...
9
votes
6answers
10k views

Where exactly L1, L2 and L3 Caches located in computer?

Where exactly L1, L2 and L3 Caches Located in computer ? I know, we use Cache to increase performance by picking DATA and INSTRUCTIONS from Cache rather than Main Memory. Following are my questions ...
0
votes
0answers
440 views

Kernel OOM killer been called when plenty of memory left while using malloc

The program is a memory exerciser that request multiple chunks of 512MB to malloc. For some reason the node 0 is been memory exhausted while the others are not been called. MemExerciser cpuset=/ ...
1
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2answers
180 views

Best Settings for Windows 7 PC with lots of memory and CPU [closed]

I have a PC with Windows 7 Ultimate (64Bit) with 24 GB of ram and Intel i7 X980 (6 Cores). I would like to know, what are best settings/tweaks I should have for faster performance and efficient ...
0
votes
1answer
65 views

Windows7 issue in mutli- tasking and memory

I seeming some problem in my windows OS recently, let me first say my system configuration. processor - Intel(R) Core(TM)2 Quad CPU Q8400 @ 2.66 GHz Installed memory (RAM) - 4.00 GB (3.00 GB usable) ...
3
votes
2answers
2k views

What is Paging in memory management?

I was just reading Operating System Principles by Silberschatz et al when I came across paging in memory management.I'm slightly confused about it. It states that Physical Memory(I assume it's RAM) is ...