Memory Management 101

I'll never have to explain /3GB again...

Clive Watson's Weblog — Tue, 27 Mar 2007 14:53:24 GMT

...I Hope! Well done to the performance team for their recent Windows Server articles, in particular

re: Memory Management 101

jrich523 — Fri, 30 Mar 2007 18:05:27 GMT

Awesome post, goes over the basics very well but for those of you who like a bit more detail take a look at this.

http://msdn2.microsoft.com/en-us/library/ms810616.aspx

keep em coming guys!

Ask the Performance Team Blog

Carpe Diem: Flaphead.com @ Home — Mon, 09 Apr 2007 20:59:29 GMT

No sure how I found this blog but its damm good. Check out these that I have been reading today! IE7

Memory Management - Dude where's my RAM??

Ask the Performance Team — Fri, 13 Apr 2007 12:29:51 GMT

Only a couple of years ago, desktop machines with 4GB of RAM were rare. Only high-end CAD designers and

Memory Management - Demystifying /3GB

Ask the Performance Team — Mon, 07 May 2007 13:25:33 GMT

As promised - here's the long awaited post on the infamous /3GB switch. At least once a week we have

Memory Management - x86 Virtual Address Space

Ask the Performance Team — Fri, 28 Sep 2007 17:35:30 GMT

In previous posts, we've discussed the Basics of Memory Management , Pool Resources and of course the

Troubleshooting Event ID 333 Errors

Ask the Performance Team — Tue, 30 Oct 2007 16:14:14 GMT

In previous posts we've discussed the basics of memory management including an overview of kernel and

Understanding Bugchecks

Ask the Performance Team — Tue, 18 Dec 2007 15:10:03 GMT

Almost everyone that has ever used Windows has either heard of or experienced a bugcheck - the infamous

Configuring Windows 2003 ( x64 ) for SQL Server

Grumpy Old DBA — Sun, 06 Jan 2008 23:49:26 GMT

There is an almost constant stream of posts on forums asking about configuration of SQL Server 2005 memory,

re: Memory Management 101

David Richter — Wed, 11 Jun 2008 01:45:27 GMT

Goos summary on the memory manager. Process share memory as they reference a single instance of a DLL. Your web page points IPC and data transfer on disk (in bytes/ sec or quantity of bytes). Note that if an executable loads, only a piece of it loads, and only rerferenced part of the DLL needed loads : a vitualization. As features of the executable are used, then it is paged from disk. the memory manager has to calculate how much physical memory a process needs. It must involve an algorithm based on a prediction schedule obtained from a prefetch file, or something like that. Cool web site.

re: Memory Management 101

Charles Kudla — Wed, 16 Jul 2008 06:28:30 GMT

Being a functional illiterate, I'm tired of low memory on the hard drive and warning messages.

Currently there is 60% RAM and 3% hard drive. While looking for items to uninstall I notice multiple automatic updates and a gazillion uninstall files.

When an updaye installs does it include previous updates, therefore, duplicating? What is safe to uninstall and/or delete?

re: Memory Management 101

driver dev guy — Wed, 11 Mar 2009 19:15:32 GMT

hi hameed,

you have explained about virtual address space, i would like to know who assigns this virtual address space of 4gb to the process.

for eg : if i have 3 processes running , does it require to have 12 GB hard disk space ?

re: Memory Management 101

Justin — Wed, 11 Mar 2009 20:50:16 GMT

no, what its talking about is that each process has its own address range.. a virtual pool of memory that is 2GB in size... that 2 GB of virtual space is not allocated on physical memory until its used... so the process thinks it has 2G available to it, but lets say its only using 24MB.. that means only 24MB of physical memory is used.. the virtual memory manager (VMM) does a translations, or a mapping... of this virtual to physical for each process... also, each process has the same address range (00000000-7fffffff) so processA can be using address 00110011 in virtual memory.. but in physical memory it can be anything (you wont really know where it is in physical memory) and at the same time processB can also be using the address 00110011, which is the same virtual address, but on physical memory its different... its just a mapping.... translation... association... basically apps have no idea of physical memory, only virtual

re: Memory Management 101

pablito lucban — Sat, 18 Jul 2009 08:56:02 GMT

should there be any problem if i would up grade my 1gb ram to 2gb,my pc is hp pavillion dv6000 and its kind of slow starting specially when i browse the internet.