473,326 Members | 2,815 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,326 software developers and data experts.

Virtual Memory Behavior When Some Memory Is "deleted"

i'm implementing virtual memory page model in c++. my virtual memory is larger than the physical memory. i've done the allocation part but i can't picture how to do the freeing part. what does actually happen when, for example 20 bytes are deleted (pages are 4 kbyte)? i know that in page table entries there is a present flag for page but here i still have the page, and only 20 bytes of it are deleted? and how do page table entries change? thanks in advance
Apr 8 '17 #1
0 4917

Sign in to post your reply or Sign up for a free account.

Similar topics

2
by: GG | last post by:
Hi, We have a prod server running on SQL server 2000 64 bit. It is a 4cpu server with 16GB of RAM. we have a maxmemory setting of 15.5GB for sql server. Inspite of 15GB being available for sql...
3
by: Gregor Wind | last post by:
Hello all, for my image processing application I need a large amount of virtual memory. I read, that it is normaly possible to get 2GB of virtual memory for each process and when you modify the...
10
by: VM | last post by:
How can I limit the use of the PC's virtual memory? I'm running a process that basically takes a txt file and loads it to a datatable. The problem is that the file is over 400,000 lines long (77...
17
by: Mike | last post by:
Hello, I have following existing code. And there is memory leak. Anyone know how to get ride of it? function foo has been used in thousands places, the signature is not allowed to change. ...
6
by: itsolution | last post by:
Hi folks, Could you shed some light on this issue? my program is running on Freebsd as a daemon. When user sends a request, it forks itself and lets its child process handles the request....
6
by: zissop | last post by:
Hello I have a strange situation with my ASP.Net applications running on Windows 2003 Server x64. As soon as they get instantiated (a visitor hits a page). the virtual memory they allocate goes to...
1
by: Michael Kansky | last post by:
I have a simple windows app written in VB.net. It has IE control on the form. Once IE control gets utilized by navigating to different www pages, Virtual memory used by the application rises and...
0
by: George2 | last post by:
Hello everyone, Sorry that this question is related to another question I posted some time before because I have some new findings and self-analysis. My question is why sometimes from perfmon...
0
by: Michael Kansky | last post by:
I have a very simple application utilizing IE control on a form. The application is continuously running in the system tray and when double clicked on the icon the form is displayed with IE control...
3
by: Adam Clauss | last post by:
We have an application which is fairly network intensive. During some stress testing, we had it setup to open approximately 300-400 TCP connections (outbound connections, we are a TCP client). ...
0
by: ryjfgjl | last post by:
ExcelToDatabase: batch import excel into database automatically...
0
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
1
isladogs
by: isladogs | last post by:
The next Access Europe meeting will be on Wednesday 6 Mar 2024 starting at 18:00 UK time (6PM UTC) and finishing at about 19:15 (7.15PM). In this month's session, we are pleased to welcome back...
0
by: jfyes | last post by:
As a hardware engineer, after seeing that CEIWEI recently released a new tool for Modbus RTU Over TCP/UDP filtering and monitoring, I actively went to its official website to take a look. It turned...
0
by: ArrayDB | last post by:
The error message I've encountered is; ERROR:root:Error generating model response: exception: access violation writing 0x0000000000005140, which seems to be indicative of an access violation...
1
by: Defcon1945 | last post by:
I'm trying to learn Python using Pycharm but import shutil doesn't work
1
by: Shællîpôpï 09 | last post by:
If u are using a keypad phone, how do u turn on JavaScript, to access features like WhatsApp, Facebook, Instagram....
0
by: Faith0G | last post by:
I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 3 Apr 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome former...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.