using large page memory mapping, for increased performance

[tarabas666 10]

neeed an option to revert this my 8 gig system is running our of ram and i gain no fps improvement!

so help how do i undo the changes ( would be nice to read it in your first post)

i can run secpol.msc cause i have win 8.1 pro but where can i find this? have the german version find nothing about memory ...

Edited May 16, 2014 by tarabas666

[Greenfist 1863]

neeed an option to revert this my 8 gig system is running our of ram and i gain no fps improvement!

so help how do i undo the changes ( would be nice to read it in your first post)

i can run secpol.msc cause i have win 8.1 pro but where can i find this? have the german version find nothing about memory ...

You don't need the secpol.msc to revert. Just remove(or change to 0) the registry value mentioned in the first post:

2. use regedit to create/set DWORD value 'UseLargePages' = 1, for key [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\arma3.exe]

[mamasan8 11]

In secpol.msc, the option is under Security settings-> Local policies -> User Rights Assignment

"Lock pages in memory".

Translate that to your language.

I have added my username to that (if you rightclick and select Properties you'll understand).

Reversing it should be a simple deletion of user

[fred41 42]

@Greenfist and @mamasan8, thanks for helping out.

Correct, setting 'UseLargePages' to 0, will fully disable this tweak.

I think the biggest problem is, that users don't know, what useraccountname they should use with 'GMF.exe useraccountname'.

I added a hint in initial post to hopefully make things more clear:

- find out the name of user account, that is used to run arma (start arma, 'taskmanager'->'processes'->'User Name')

@tarabas666, german secpol.msc terms are:

'Locale Richtlinien'->'Zuweisen von Benutzerrechten'->'Sperren von Seiten im Speicher'

Greets,

Fred41

[nikiforos 450]

Strange, am I the only one with huge FPS gain with this tweak? I get at least 5 more FPS running the benchmark. Oh well I might be lucky or something.

[Greenfist 1863]

Strange, am I the only one with huge FPS gain with this tweak? I get at least 5 more FPS running the benchmark. Oh well I might be lucky or something.

I got 53 -> 59 fps in Altis benchmark. While it's very nice, it doesn't really matter on such high fps. I could live with 53 just fine. It's the lower end that matters. All my heavy benchmarks showed only 1-3% gain, like from 29 to 30.

Some say the game feels smoother but I can't say for sure. I guess I have to record and compare the individual frame times to confirm it. Smoother should show as stable fps.

I've noticed that if the fps fluctuates even as little as +-5% at around 40fps, it feels much worse than stable 40.

[nikiforos 450]

I noticed some positive changes even in AI heavy situations. I had some missions with max. 40 AI(fighting each other at the same place at the same time) enough so I can play without framedrops and reasonable smoothness. Now I can almost add 20 more AIs in the same mission but keep same frames and smoothness as before. Disabling Windows Search Index helped as well(delays RAM fragmentation). You guys must shut down programs that you don't use and maybe reduce startup programs.

Edited May 16, 2014 by Nikiforos

[EDcase 87]

Note about username:

If you have the windows option 'RUN' in the start menu. Type 'cmd.exe' to open the command line interface.

It should start in the folder c:\users\Administrator (where Administrator is your windows account username)

Then if you place Fred's GMF.exe in that folder you can type: gmf administrator (use whatever name is shown in the c:\users\...)

[tarabas666 10]

thanks for the help! Perhaps i gain no fps improvents cause i run arma 3 from ssd. reloading from ssd into ram is fast enough then ?? i wonder a bit why windows tells me i ran out of ram when arma only uses 2.5 gig and i have 64 bit 8 gig and not much other stuff is going on. perhapse cause i set the pagefile a little smaller like 2 GB to save space from my little 128GB SSD. i revert pagefile settings and see if ram error is still there.

[nomisum 129]

thanks for the help! Perhaps i gain no fps improvents cause i run arma 3 from ssd. reloading from ssd into ram is fast enough then ?? i wonder a bit why windows tells me i ran out of ram when arma only uses 2.5 gig and i have 64 bit 8 gig and not much other stuff is going on. perhapse cause i set the pagefile a little smaller like 2 GB to save space from my little 128GB SSD. i revert pagefile settings and see if ram error is still there.

just a quick note, i have a ssd as well and have +4fps.

[MavericK96 0]

Yeah, I definitely set the correct user (actually it was already set correctly in secpol.msc)...just didn't see any performance increase.

[fred41 42]

... an additional, probably important hint for everybody running arma under a useraccount that is member of the Administrator group:

You have to start arma via 'Run as administrator' too, in this case (because of UAC).

An other (more secure) option is, to make an normal account (not member of the administrator group) to run arma.

Greets,

Fred41

[devast8ndiscodave 10]

User mbk1969 over at Guru3d has created an app to do this tweak. Just download this, run it and add the exe name to the list. This tweak doesn't just work for Arma 3. It works on most games.

http://www.mediafire.com/download/aiudd2j3at03j12/LargePage_util.zip

[jumpinghubert 48]

User mbk1969 over at Guru3d has created an app to do this tweak. Just download this, run it and add the exe name to the list. This tweak doesn't just work for Arma 3. It works on most games.

http://www.mediafire.com/download/aiudd2j3at03j12/LargePage_util.zip

hey many thanks! Will try it with projectcars.

[fred41 42]

@Devast8nDiscoDave, really nice tool, but does it set the required privilege for non admin accounts too?

Edited May 17, 2014 by Fred41

[ModeZt 0]

How do I make it run as administrator if I run it from Steam?

[fred41 42]

How do I make it run as administrator if I run it from Steam?

I would recommend to make a desktop shortcut to start arma3.exe directly and if needed use 'Run as administrator' via right mouse click (you can start steam manually before arma).

Bar in mind:

Only, for useraccounts, that are member of the administrator group, you have to start arma via 'Run as administrator'.

If your account, used to run arma, is not member of the administrator group and you have the privilege successfully granted to this account, then you can start arma as usual.

Greets,

Fred41

Edited May 18, 2014 by Fred41

[NoPOW 59]

Just to summarize: This registry-tweak, once applied by an administrator, functions for every account, user and administrator, that has large pages enabled?

[fred41 42]

@NoPOW, exactly.

The registry tweak it self, is per application (useraccount independend), the privilege is per useraccount/group.

[bigpickle 0]

Does this effect SweetFX? since running this tweak SweetFX has stopped working on my pc, dont know if its just coincidence but its not just arma its stopped working on.

[fred41 42]

I think it is very unlikely, that this registry tweak has any effect to SweetFX.

You could just set the related registry value 'UseLargePages' to 0, to fully disable this tweak and check what happens.

[MavericK96 0]

... an additional, probably important hint for everybody running arma under a useraccount that is member of the Administrator group:

You have to start arma via 'Run as administrator' too, in this case (because of UAC).

An other (more secure) option is, to make an normal account (not member of the administrator group) to run arma.

Greets,

Fred41

Even if UAC is disabled?

[fred41 42]

... assuming you mean UAC-settings at 'never notify', i would say yes ...

[cochise 10]

What prevents this from working in Windows 8?

[kremator 1064]

^^ pebkac.