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Questions tagged [virtual-memory]

Virtual memory is a method where each process is given its own address space (virtual memory), and the hardware translates every VM reference to a physical memory address. Originally VM was used to provide more address space than the available physical memory. To accommodate situations when more virtual memory is in use than physical memory, a storage device such as HDD can be used to "swap out" data and later "swap (back) in" as needed.

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2k views

Virtual Memory Usage reaches up to 100% Why?

One of my client is having cloud hosting. He has problem of high virtual memory usage: See the current status Virtual Memory Usage 20 GB / 20 GB (100%) Physical Memory Usage 1.82 GB / 5 GB (36.47%) ...
Future King's user avatar
3 votes
1 answer
2k views

How to drop memory caches in macOS?

In GNU/Linux there's a way to drop_caches. drop_caches is the command that would flush caches from the main memory. I don't have such a command in macOS. How to..?
174140's user avatar
  • 104
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0 answers
611 views

Cannot access System Properties (Windows 7)

In Windows 7, I cannot open Advanced system settings (nor "systempropertiesadvanced.exe") Computer name, domain and workgroup settings (nor "systempropertiescomputername.exe" Performance settings (...
Ate Somebits's user avatar
1 vote
2 answers
2k views

How to identify PIDs which are writing to SWAP memory in Linux

Server is using swap memory when there is enough RAM is available because of which users are facing intermittent slowness and performance issues. In the free command I can see that there is 6927mbs of ...
Kaushik's user avatar
  • 13
2 votes
1 answer
1k views

Windows reports "Out of Memory" despite huge pagefile

How to force Windows to use the swap file to the fullest? I use Windows 7 64-bit and I have 16 GB of RAM + 8 GB (static) pagefile. When I open many Chrome tabs, and the physical memory is almost ...
FelisManulus's user avatar
2 votes
0 answers
989 views

linux kernel virtual space , lowmem , highmem , RAM size

I need some help understanding the exact relations between the linux kernel virtual space , specifically LOWMEM area , and the available RAM size as seen by the kernel. after reading this article: ...
hutcruchi's user avatar
  • 121
1 vote
1 answer
759 views

How to store data in pagefile?

Memory-mapping, e.g. via Python's numpy.memmap, works, albeit temporarily; once pagefile capacity is exceeded, the arrays are silently unmapped from pagefile. Re-mapping each time is undesired - need ...
OverLordGoldDragon's user avatar
3 votes
2 answers
5k views

Any risks to greatly increasing pagefile size?

I require 64GB to fit an entire dataset in memory for deep learning, but have only 12GB RAM. Virtual memory being the next-best alternative, I learned it can be effectively increased via increasing ...
OverLordGoldDragon's user avatar
1 vote
0 answers
287 views

How does Kernel allocate COMMITTED VIRTUAL MEMORY to a Process

It would be really helpful for me if someone can answer my question. How does Kernel allocate COMMITTED VIRTUAL MEMORY to a process (jvm process) what criteria is used to determine how much ...
raviillinois's user avatar
1 vote
0 answers
66 views

How does a process like KeePass protect its memory in Windows?

I am looking at KeePass and trying to figure out how it protects its memory exactly. Is it because the use of KeePassLib.Security.ProtectedBinary class for all it's memory allocations or is it ...
oleksii's user avatar
  • 850
2 votes
1 answer
9k views

How to resolve APFS overallocation error from volume "VM" without reformatting disk

I ran Disk Utility's First Aid on my drive's APFS container. One of the volumes, called "VM", gives the following warning: warning: Overallocation Detected on Main device: (26707978+1) bitmap address ...
Herman Autore's user avatar
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How do I have non 64k aligned private memory space?

In windows memory alignment granulatity is 64K, why do I have 4k on 0x7FFEF000? Windows 10 PRO, 11763.316
Caliban's user avatar
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0 answers
55 views

Can a same disk be temp for windows and linux?

Is it possible to make a SSD be temp and virtual memory for both windows and linux, without wasting half of the size for the other OS, and be SSD-friendly?
l4m2's user avatar
  • 101
1 vote
2 answers
2k views

System that can read hard-drive and exclusively write into RAM?

I hope to be at the right place. I could not find any suggestions on the "web" about my question. How could an O.S, let us say a distribution of linux, can be loaded from the hard-drive and execute ...
Ben W's user avatar
  • 61
0 votes
2 answers
2k views

Windows 10 virtual memory/pagefile discrepancies

My Windows 10 system is using far too much virtual memory How do I stop this? Using HWiNFO64 you can see I currently have about 75 GB of virtual memory on my system and am using a massive 31 GB. The ...
Turkeyphant's user avatar

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