Questions tagged [paging]

Paging is a memory management method. It is also often described as swapping.

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How to make a swappable in-memory block device in Linux without tmpfs?

One can make a ramdisk in Linux by modprobe brd rd_nr=1 rd_size=$SizeInKB (creates uncompressed /dev/ram0) or by modprobe zram && echo $SizeInBytes >| /sys/block/zram0/disksize (creates ...
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Is paging going on non-stop even if I have plenty of memory?

My laptop has 16GB and only 50% is used. My PC is at rest, with no foreground activity and no known background activity from my running aps. Why is Windows 10 still churning the disk most of the time? ...
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Page file size in Windows 10

As I have gone through some articles, the virtual memory page file size should be 1.5 multiplied by the RAM size. I am currently using 8GB physical RAM in my laptop. So accordingly the page file ...
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word is autosaving document on every key stroke

For some reason word has started saving my document each time that I type a keystroke. I have set autosave to 10 minutes, but it does not make a difference. Thanks in advance S
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Paging files are deleted [duplicate]

I have set no paging files from the virtual memory settings, I noticed that my PC’s performance became bad and slow. Is there a way to restore these files or download some?
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Why 32-bit Windows can maximum have 16TB Page File?

According to Microsoft, the page file sizes of 64-bit and 32-bit Windows are 256TB and 16TB respectively. In 64-bit, the virtual address looks like this: With 4 levels of 9-bit memory mapping fields ...
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What is my recommended total paging file size?

I don t know how to set my paging file size. While google says the initial should be 1.5 of my RAM and maximum should be double, Windows says my recommended "total paging size for all drives" is 1939 ...
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Tweak Windows to not retry forever when reading a failing HDD sector

How to configure Windows to perform better with a failing HDD? When a program tries to read a file from a failing HDD sector, it eventually receives The request could not be performed because of an I/...
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Is there a RAM utilization percentage where performance degredations like page faults start to occur significantly more often?

I remember years ago reading a textbook that stated significantly high page faults and other RAM-related issues can occur with constant utilization rates >= X%; it didn't necessary start at just 100%. ...
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Is it possible to use a partition for a paging file across multiple Unix distros and a Windows partition?

I have a Unix distro that has its own paging file, but I want to switch over to a partition so that it can be utilized by all three systems.
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Why our server with centOS i686 showing 14 GB usable RAM

We have CentOS server 6 i686 (installed by previous employee) on blade server which is having 32GB RAM (4GB x 8 slots). The usable RAM is 14GB. My question is why it is showing 14GB instead of 4GB,...
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Splitting serial port output

I have a nurse call system that has output that connects to a paging transmitter. Works good right now. We put in a serial "Y" splitter so that we could receive the same data, but to another computer ...
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Paging file and swap partition on a Ubuntu/Windows 7 dual boot

I'm planning hard drive partitions for my new laptop and I had a curious idea: Can the same partition be used to house both the paging file (windows) and the swap space (linux)? The reasoning ...
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OS - Parallel between heap/stack and pages

I'm studying for an exam on Operating Systems. I am working on the chapter concerning virtual memory. I'm getting really confused making a parallel between this very common schema describing a ...
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171 views

Why would hovering over the Windows taskbar unfreeze my applications?

I purchased a Thinkpad 570, downgrading RAM to 4 GB, and from SSD to HDD, so that I could buy my own components cheaper than Lenovo was charging for upgrades. While waiting for parts, I started using ...
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Why has reducing the size of the page file made my Windows work so smoothly?

I have a Lenovo W500s Notebook with 16GB RAM, a 250GB SSD and Windows 10 Pro. Until recently it was performing really, really bad. I couldn't believe that this machine runs so bad so I was googling ...
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After the latest Win8.1x64 Updates, my system got stuck restarting or shutting down..

When I installed the last Windows update, all seemed fine except it got stuck doing the restart. I waited about 5 minutes then used the power button. Startup was normal. But then when I told it ...
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Memory Management - Virtual To Physical Address Translation

Please I need the correct way to convert Logical (Virtual) Address to Physical Address , i have the following Question : Given the following Page Table : Knowing that the virtual pages and ...
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907 views

Why is paging used?

Paging is a form of primary memory management, said to be a way to store data non-contiguously. It's achieved by setting a chunk, or page, size, so pages can be allocated in different areas. Would ...
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Windows 7 Excessive Memory Usage & Paging

New user here, signed up because I saw similar posts through a Google search. I have Windows 7 x64 w/8 Gigs of memory installed. The typical memory usage that I see is 2 gigs. That's what I would ...
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How to disable the system drive paging file completely and still get dumps

Windows 7 Ultimate I've been using the minimum paging file size on my system drive needed for mini dumps, but I have found that some things, like Hulu and YouTube caching still use it ALOT and it ...
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How much of logical memory is actually allocated for each process on disk?

Suppose the processor is 32 bit. So each process running on that processor gets 2^32 bits of logical memory. If the system is having n processes, is n*2^32 bits allocated on disk? where is it ...
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How to detect thrashing on an SSD-equipped Windows system?

With spinning hard disks it was relatively common to hear disk thrashing when some process, Windows or otherwise, was making a bad fist of things. Quite often this was an indicator that a process was ...
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Windows XP 32-bit page fault (other OSes unaffected)

The cause of this is unknown, as I performed a proper shutdown at the last time before this has occurred. I have attempted to boot into Safe Mode and twice used the Last known good configuration ...
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3answers
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Conflicting defintions of virtual memory

It seems that there are two definitions of virtual memory, and I'm wondering do they both describe the same thing or is it that two similar but distinct concepts are called the same thing? ...
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Is it possible to manually send programs to virtual memory in windows?

If you have many open programs and your machine is going too high on memory/cpu utilization you might want to close a program without loosing its state (sending it to virtual memory) and then resume ...
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What does the content of the page table look like after a page has been swapped out to the disk?

From what I understand, the page table maps virtual addresses to physical addresses. But what if a page has been swapped out to the disk? Wouldn't the location of the data take more bits to write ...
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minimize windows swap file usage

I know completely disabling the swapfile is not a good idea, so i'd like just to minimize its usage, so that the memory pages will be swapped only when the physical memory is completely full. I know ...
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does switching my paging file in a non system partition will slow my PC?

I have running out of space on Drive c: because of the windows 7 updates and other software. so I decided to switch my paging file from drive c: to drive D: to free some space temporally until I can ...
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Paging file reset - Windows 7

We know that the paging file will be reset every restart/shutdown. Is there anyway to reset the paging file without restart or shutdown? And does it really matter if I left the paging file in a ...
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Is it possible to perform Windows boot-time actions before paging is enabled?

I would like to perform some actions at Windows boot time before paging is enabled. I know I can run startup scripts with Task Scheduler or with group policy startup scripts. My question is whether ...
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Pagefile usage fluctuating with zero paging I/O

I fired up the Performance Monitor and noticed that the % Usage on the 4GB pagefile fluctuates between 4-10% while the computer is sitting "idle." (I calculate that to be approx. ~160-400MB.) Memory ...
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Windows NT Paging Algorithms

I've been trying to figure out how the paging works inside Windows operating systems. I found a blog post from Mark Russovich back in 1998 about such memory management. He discusses the "Least ...
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Cannot suppress page numbers in MS Word 2010

In the question Setting page numbering on Word the questioner wants page numbers to show up only on the 5th page onwards, beginning with page number 1. The accepted answer shows how to do this, ...
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Can a program break a cpu and/or gpu?

For the record I have posted this question on other forums and nobody has a clue. I have an Alienware 14 (Intel i7 4700MQ and GeForce GTX 765M). A while ago I ran an emulated version of the original ...
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Windows 7 Paging file apparently not being used

I'm running Windows 7 Home Premium 32bit on a mobo with 24GB RAM. Of those 24GB, 20GB are assigned as a RAMDISK via ASRock XFastRAM. This RAMDISK has the drive letter X assigned to it. On X:\ I'm ...
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How to know the size of page frame used by my OS?

How to know the size of page frame used by my OS ? This could be useful for some optimizations when I code. (Allocate big buffer that fit in a page frame for example). Page frame is determined by ...
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Is the RAM page size always the same of swap disk page size? [closed]

Could they be different in some case? How is RAM page size determined/changed?
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Why Windows XP SP3 still uses the pagefile, even if it's disabled?

I've an old computer which is running Windows XP. Some days ago I formatted it and reinstalled Windows XP with SP3 (the previous one was SP1 I think), and i noticed that in the performance tab of the ...
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How to calculate the size of the page table from this data?

A computer uses 46–bit virtual address, 32–bit physical address, and a three–level page table organization. The page table base register stores the base address of the first–level table, which ...
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Why does Linux use a swap partition when the kernel supports paging/virtual memory anyway?

As far as I understand paging and swapping, they're completely different concepts. While swapping means, that a process is either completely in physical memory or on the hard drive, with paging parts ...
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Do virtual machines need a paging file?

I have read this, which has confused me a little: Virtual Machines require physical not virtual memory so you do not need to count the memory allocated to your VM's when calculating your paging ...
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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 responsive....
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Swaping, Paging, Segmentation, and Virtual memory on x86 PM architecture

Well, this may seem a common or already asked question but after searching various books, online tutorials and even here on SU, I am still puzzled at how these four beasts work together on a x86 ...
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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 ...
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VMWare Player slows down computer after exit

After exiting VMWare player, my main OS (Windows 7) lags and slows down tremendously. The HDD is seeking excessively. I see that the issue is that it's swapping tons of pages rapidly. This lasts ...
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Windows 7 Hard fault / Page fault and memory bottleneck

Windows 7 resmon displays 0 hard faults. But perfmon shows pagefault around 60 and perfmon /report tells me my system swaps actively. AFAIK not every page fault is hard fault: page could be stored ...
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PC hardware (HDD, BIOS / motherboard) acting weird

This is going to be long story. I'm trying to figure out what the hardware problem with my desktop is. It started with my Windows XP's very slow response and later even a BSOD, when shutting down. ...
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Is virtual memory related to virtual address space of a process?

I have understood that Paging is a memory management technique which allows computer to bring data from secondary storage to main memory for executing process. It gives an impression to process that ...
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Is there Special Paging mode in XP for high memory usage scenarios

I have observed that once my PC (WinXP-x86) has a Peak Commit Charge exceeding the Total Physical Memory (as reported by Task Manager) that my PC grinds to a halt. Obviously paging is going to be the ...