DeSmuME 15% Speed Increase for r4292

[yeshuachrist]

Speed Fix!

You are removing the "path settings" from the "desmume.ini" configuration file, once this is done you will notice the speed increase. When you do this, as a proof of the speed increase, the game Golden Sun Dark Dawn will flicker at the title screen like no$gba. You are not using any frame skipping, the speed increase comes from removing the "path settings" in the config file. Example Below.

Replace your video settings with this:

[Video]
Window Rotate=0
Filter=0
Width=256
Height=384
LCDsLayout=1
LCDsSwap=2
Window Size=0
Window width=512
Window height=192
WindowPosX=203
WindowPosY=397
Display Method=1
VSync=0
Window Force Ratio=1
FrameSkip=AUTO0


You can configure all the options afterwards in Desmume r4292 no problem, including all of the video options above to your liking, just don't click on the "path settings" option or it will go back to being very slow, as it will write the "path settings", back into your config file. Heres a link to the program:

http://www.emucr.com/2012/06/desmume-jit-svn-r4292.html

The attached file has just the video portion of the config file, you must set all of your settings again, just don't touch "path settings" and you will be fine. The speed increase has worked for a few games I tested already.

Attached Files

desmume SPEED FIX.rar (232 Bytes, 67 views)

[SCHUMI_4EVER]

Path settings have exactly NOTHING to do with performance.

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No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[Lasnap]

Plus who knows what EMUCR has down to the program itself so we tend to stay away from that site for emulators.

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[yeshuachrist]

This does produce a speed increase, I suggest you try it for yourself. I didn't believe this was possible myself, until i stumbled on to this. The funny thing is, removing the "path settings" from the config file does.

[KrossX]

He might be onto something here. There seems to be a slowdown when the folders the settings point to do not exist.

@yeshuachrist: Do this test. Touch the path settings to have the defaults back to the INI. Then, open the INI and create all the folders that appear there. This should be "normal" speed, and I think is the same speed as removing the path settings. Then! Remove all your empty folders (or better yet, move away all folders but battery) and compare your framerate.

#EDIT: Stick to the official build. I noticed no change with it.

__________________

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Last edited by KrossX; June 30th, 2012 at 22:13..

[yeshuachrist]

The moles that want to work their agenda into these alternative builds, apparently find it difficult to do, since desmume is open source, since it is written by more than one author, it is also easy to forget the amount of overwhelming work involved, in convincing a larger community 100% of the corrections to the source are incorrect, because they don't follow the pattern of low performance, we are told desmume is susposed to have, its been almost a year or about a year, since I did have the time to make a few threads about some basic changes to the configuration file of no$gba which brought about its own small speed increases, its took a while, as unexpected as it is, it is a surprise, this is a loooog sentence, I suggest the reader tries what I suggest in the first post for themselves, thanks again.

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Last edited by yeshuachrist; July 1st, 2012 at 08:08..

[SCHUMI_4EVER]

These settings don't affect performance and that's final. Go take your nonsense conspiracy theories elsewhere.

DeSmuME doesn't have low performance, it works perfectly fine.

__________________

Intel Core2Quad Q9550 (2.83Ghz stock) | ASUS P5Q | 2x2GB Transcend JetRam DDR2-800 | ASUS ENGTX260\HDTP\896M | Windows Vista Home Premium 64bit SP1

The Champ has retired but may his Legacy live on FOREVER !!!!

No$GBA DS FAQ 2.0

Get it right fools! The glass is HALF-EMPTY, not half-full!!!

!!! WARNING: Emulation requires a brain !!! WARNING: Emulation =/= Piracy !!!

[KrossX]

There's the possibility that some of this might be triggering the JIT builds to fall back to interpreter. Since the SVN interpreter is around that percent slower than JIT, as odd as it may seem, it could very well be a bug. I'll make my own build today and test it proper.

Again, since the JIT is almost at the same performance as the official optimized release. Unless you're testing, there's no need to use it.

@yeshuachrist: Please retest with this builds http://www.mediafire.com/?vgfj7cj76s10j66

Test with normal, test with JIT. And if you still find a consistent FPS difference in your test, try to find exactly which INI entry causes it.

__________________

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Last edited by KrossX; July 1st, 2012 at 17:06..

[xZabuzax]

Originally Posted by yeshuachrist

Speed Fix!

You are removing the "path settings" from the "desmume.ini" configuration file, once this is done you will notice the speed increase. When you do this, as a proof of the speed increase, the game Golden Sun Dark Dawn will flicker at the title screen like no$gba. You are not using any frame skipping, the speed increase comes from removing the "path settings" in the config file. Example Below.

Replace your video settings with this:

[Video]
Window Rotate=0
Filter=0
Width=256
Height=384
LCDsLayout=1
LCDsSwap=2
Window Size=0
Window width=512
Window height=192
WindowPosX=203
WindowPosY=397
Display Method=1
VSync=0
Window Force Ratio=1
FrameSkip=AUTO0


You can configure all the options afterwards in Desmume r4292 no problem, including all of the video options above to your liking, just don't click on the "path settings" option or it will go back to being very slow, as it will write the "path settings", back into your config file. Heres a link to the program:

http://www.emucr.com/2012/06/desmume-jit-svn-r4292.html

The attached file has just the video portion of the config file, you must set all of your settings again, just don't touch "path settings" and you will be fine. The speed increase has worked for a few games I tested already.

This trick doesn't work, just tried it. However i must admit that the Desmume build you posted "r4292" is a lot faster than the latest official build "0.9.8"

So i will say thank you for bringing to my attention that this build is way faster than "0.9.8" which was the one i was using =)

Edit:

After a bit of research i found out that the speed increase is because of a new option in the emulation settings called "Use Dynamic Recompiler"

That option makes the emulator "less accurate" and can cause glitches/problems in some games, but the speed increase is enormous. With that being said, i rather stick with this build than the official one since the Dynamic Recompiler option makes the emulator faster.

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Last edited by xZabuzax; July 1st, 2012 at 23:06..

[CheatMaster]

Hmm,with this option "Use Dynamic Recompiler" the emu finally started to work at good speed on weak PCs.
On some games I get ~50% and more speed boost.

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[Squall-Lionh@rt]

back when i tested jit, it was roughly 5% faster then the PGO 0.9.8 release.

wait until this is PGO

[CrazyMax]

Squall-Lionh@rt, try this

[Squall-Lionh@rt]

thats an old revision, JIT has been merged to trunk for some time now and is far faster than it was back then

[CheatMaster]

Is there is some place from where you can get the newest rev(except from emucr)...some site lite the buidbot for pcsx2.
The newest rev from emucr is little slower than the version KrossX posted and it's from 1 July...the newest version from CrazyMax link is from 9 July

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[Squall-Lionh@rt]

Originally Posted by CheatMaster

Is there is some place from where you can get the newest rev(except from emucr)...some site lite the buidbot for pcsx2.
The newest rev from emucr is little slower than the version KrossX posted and it's from 1 July...the newest version from CrazyMax link is from 9 July

JIT has been merged to trunk

hence, the latest is not from july 1st........

[CheatMaster]

I mean the newest beta\rev. not the newest official.
http://sourceforge.net/projects/desmume/
The newest official is 0.9.8 which don't have that option.

The newest for download from CrazyMax link is 0.9.9(compiled on 9 July)

The newest at emucr is r4396 and is compiled today

KrossX version is compiled on 1 July and is r4292

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[Squall-Lionh@rt]

JIT has been merged to trunk

Originally Posted by CheatMaster

I mean the newest beta\rev. not the newest official.

The newest at emucr is r4396 and is compiled today

[CrazyMax]

Originally Posted by Squall-Lionh@rt

thats an old revision..

updated

[sjyune]

@CrazyMax

True Full-screen & Double buffering option

first, thank you for releasing JIT builds..it really saved me from buying new computer...huge speed boost !

btw, any chance you will add these features (maybe through INI as advanced options) to your JIT build (for those with CRT+ArcadeVGA or cabinet users) ?
Vsync is great but too costy ...also true full-screen could provide a further boost to your JIT build

p.s. what do i need to build a JIT build ?

[the_randomizer]

Is this really that much faster? The day I start trusting untested beta releases is the day hell freezes over.

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