Have you done the DisablePagingExecutive & LargeSystemCache tweaks in XP?

[jrichrds]

If you've enabled DisablePagingExecutive & LargeSystemCache in Windows XP, how much RAM do you have and did you notice any difference in performance?
I can't tell any difference at all with 512MB RAM.

 

[InlineFive]

There was no difference in performance for me for bad results. LargeSystemCache hosed my ATI Driver install and made several system files unrecognizable. DisablePagingExecutive corrupted my system kernel beyond repair so I had to reinstall windows.

The LargeSystemCache does not appear to affect nVidia machine but just to warn you.

-Por

 

[Doh!]

I didn't notice any difference either (I tested on a system w/ 512mb). But it didn't damage anything either (using an ATI video card).

 

[Nothinman]

They won't help anything, infact you might get a performance drop from the system preferring to use memory for file system cache instead of other things. The executive (i.e. the kernel) will almost never get paged anyway as it's in use, if a driver or subsystem is idle enough that it gets paged out the chances of you needing it are slim.

 

[spyordie007]

if a driver or subsystem is idle enough that it gets paged out the chances of you needing it are slim.

And the time required to put it back in memory is minimal.

I can't tell any difference at all with 512MB RAM.

Than you're probably just fine, the real problem will come in when you try and run applications that have greater memory requirements than your system has to offer and your system has to start paging pieces of those applications... If you arent experiencing that than you should be fine.

The memory management in 2K/XP does a pretty decent job without the need for "tweaking" it (unlike 95/98/Me)

 

[jrichrds]

So much for all those "XP tweaks" pages. Most of the tweaks seemed pretty meaningless.

From what I've read, LargeSystemCache allows the OS to use much more of the available physical RAM for the system cache, but frees it up automatically on demand. So you end up making better use of your physical RAM instead of having a good chunk of physical RAM almost always unused. Is this not true?

 

[Nothinman]

That's basically how it works anyway, free memory is always used for filesystem cache and will be freed if it's needed for other things, but setting LargeSystemCache allows Windows to go outside of the normal cache pool and use up to total physical memory - 4M for filesystem caching. This includes memory that might normally be used for program data which would slow down that program as more paging would be necessary.

http://www.microsoft.com/windows2000/techinfo/reskit/en-us/default.asp?url=/windows2000/techinfo/reskit/en-us/regentry/29933.asp

 

[Mitzi]

Windows XP/2K do a good enough job of managing their own memory. I'd give these sort of performance tweaks a wide berth.