Arch Linux

lmello

Member

From: Brazil

Registered: 2012-11-06

Posts: 300

[kind of SOLVED] desmume - very slow after latest gtk/gnome upgrade

I wonder why, suddenly I jumped from +/- 60 fps to 50 fps with auto frame-skipping on Fire Emblem.

Anybody noticed this?

Last edited by lmello (2013-05-22 23:50:49)

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Fundamental Axiom of the Universe (aka Murphy's Law): Whatever can go wrong, will go wrong.
First Digital Deduction: Nothing obeys Murphy's Law so well as computers.
Second Digital Deduction: Everything go wrong at least once.
Third Digital Deduction: Things go wrong even when there's absolutely no possibility of anything go wrong.

Procyon

Member

Registered: 2008-05-07

Posts: 1,819

Re: [kind of SOLVED] desmume - very slow after latest gtk/gnome upgrade

I installed desmume today for the first time to play Castlevania Order of Ecclesia. It was faster in wine.

0 frame skipping.
Linux ran at 45 FPS.
Wine ran at 60 FPS with quite some leeway without frame limiter.

In wine I turned on the dynamic recompiler.

Last edited by Procyon (2013-05-14 16:13:01)

lmello

Member

From: Brazil

Registered: 2012-11-06

Posts: 300

Re: [kind of SOLVED] desmume - very slow after latest gtk/gnome upgrade

I was getting pretty good speed until gtk2 and gtk3 were upgraded to their latest versions yesterday... hum.

It's no secret the code is Windows-optimized, but this sudden performance drop is strange.

---

Fundamental Axiom of the Universe (aka Murphy's Law): Whatever can go wrong, will go wrong.
First Digital Deduction: Nothing obeys Murphy's Law so well as computers.
Second Digital Deduction: Everything go wrong at least once.
Third Digital Deduction: Things go wrong even when there's absolutely no possibility of anything go wrong.

Ziemas

Member

Registered: 2009-06-07

Posts: 14

Re: [kind of SOLVED] desmume - very slow after latest gtk/gnome upgrade

Are you sure it's running with the dynamic recompiler enabled? I remember last time i tried using it i had to manually pass the command line flag to use the dynarec.

Edit: Confirming that for me dynarec is not enabled by default despite what it says in desmume --help

I can enable it with desmume --cpu-mode 1

Last edited by Ziemas (2013-05-18 21:02:22)

lmello

Member

From: Brazil

Registered: 2012-11-06

Posts: 300

Re: [kind of SOLVED] desmume - very slow after latest gtk/gnome upgrade

Are you sure it's running with the dynamic recompiler enabled? I remember last time i tried using it i had to manually pass the command line flag to use the dynarec.

Edit: Confirming that for me dynarec is not enabled by default despite what it says in desmume --help

I can enable it with desmume --cpu-mode 1

Thanks, that's exactly the reason of the performance drop, I enabled the dynamic recompiler and I got better performance, but no as quite as before. BUT I reinstalled desmume with 'downgrade' and then upgraded it to 0.9.9-2 and it was just as fast as before. Very weird.

It seems that desmume isn't saving its options - it will always start with 'frameskip=0' despite any changes, for instance.

Last edited by lmello (2013-05-22 22:33:52)

---

Fundamental Axiom of the Universe (aka Murphy's Law): Whatever can go wrong, will go wrong.
First Digital Deduction: Nothing obeys Murphy's Law so well as computers.
Second Digital Deduction: Everything go wrong at least once.
Third Digital Deduction: Things go wrong even when there's absolutely no possibility of anything go wrong.