Deathsmiles on lr-mame2015 : Any performance tips?

pjft

@AdamBeGood Here's the same on Google Drive:

(new link): https://drive.google.com/file/d/1faM11qnX0p3BD4BW3ipSz5MwABT_jra7/view?usp=sharing

stevas

Thanks for the replies all.

I realised though, I have voltage only at 4. Not sure if that's why I get issues trying to push these values, I'll try that out.

Edit: yeah, the random freezing is what I was talking about. Is it possible that's down to the over voltage not being set high enough? Anyway, I will test that.

pjft

@stevas Definitely - without over_voltage 6 my pi would not boot. I forgot that once.

pjft

PR submitted upstream - a simplified version of the code, actually.

https://github.com/libretro/mame2016-libretro/pull/43

If anyone wants to test the latest version, here it is. Nothing should really have changed, but the more the merrier.

https://mega.nz/file/UFU11KSI#9kTKoOWAg-WpqCbTm7tKXei5cPgFAizDciurrbyPQuk

And here on Google Drive:

https://drive.google.com/file/d/1faM11qnX0p3BD4BW3ipSz5MwABT_jra7/view?usp=sharing

AdamBeGood

@roslof / @pjft Sorry to ask a perhaps daft question, but I can't copy the file into that folder via WinSCP as I don't have the rights. How do I resolve that?

Thanks very much for sharing the Google Drive link.

roslof

@AdamBeGood sounds like you're downloading to a PC, then uploading to the pi? You could put it in your pi home drive, where you should have permission to save. Something like /home/pi/Downloads

Then you could open a console window and move it to the correct location.

sudo mv /home/pi/Downloads/mamearcade2016_libretro.so /opt/retropie/libretrocores/lr-mame2016/

pjft

@roslof help me out here - running from the lr-mame binary I get segmentation faults on both ddp3 and ddpdojt . Am I missing something?

roslof

@pjft said in Deathsmiles on lr-mame2015 : Any performance tips?:

@roslof help me out here - running from the lr-mame binary I get segmentation faults on both ddp3 and ddpdojt . Am I missing something?

Launch ddp3 with verbose logging enabled. Copy /dev/shm/runcommand.log output to pastebin.com and post link here.

AdamBeGood

@roslof That works perfectly! But my Overclock setting still isn't saving.... Do I need to change it within the config rather than within the game?

roslof

@AdamBeGood said in Deathsmiles on lr-mame2015 : Any performance tips?:

@roslof That works perfectly! But my Overclock setting still isn't saving.... Do I need to change it within the config rather than within the game?

Change it from the Core Options. Not from the MAME Tab slider options.

How: While running the game, with your game controller, hold your hotkey, and whatever button you mapped to "X" to enter RetroArch menu. Then scroll down to Options. Change CPU in there. THEN scroll to the top of the Options menu and Create a game configuration, so the CPU change only saves for the game you are running.

AdamBeGood

@roslof Clever stuff! Yep, that works. Thank you!

pjft

@roslof Nevermind. Nothing that reinstalling the binary didn't fix - interesting.

Thanks.

barbudreadmon

@pjft i've no rights on the mame2016 repo, but i notified the people who have about your PR

pjft

@barbudreadmon Thank you so much for the comment there and for the feedback here!

pjft

The PR was just accepted, so you may all just update lr-mame2016 from source and it should have the option.

Thanks @barbudreadmon for the help there, and everyone else here for testing. I look forward to hearing about preferred underclock options for the different games :)

roslof

@pjft congratulations! A worthy upgrade.

Darksavior

@AdamBeGood MIght be a combination of max swapchain images = 4 and audio latency =256

pjft

To close off this thread - at least until there are more recommendations for actual underclock settings, here are the results of my testing on DoDonPachi Dai-Fukkatsu and Deathsmiles.

I tested running two loops of their attract mode for both, and here are the results:

Deathsmiles
--------
Overclock set to 100%:
[INFO] Threaded video stats: Frames pushed: 14467, Frames dropped: 0.
Average speed: 96.09% (240 seconds)

Overclock set to 42%:
[INFO] Threaded video stats: Frames pushed: 15256, Frames dropped: 0.
Average speed: 99.63% (253 seconds)

-----------
DDPDFK

Overclock set to 100%: 
[INFO] Threaded video stats: Frames pushed: 13376, Frames dropped: 0.
Average speed: 94.03% (222 seconds)

[INFO] Threaded video stats: Frames pushed: 13398, Frames dropped: 0.
Average speed: 94.42% (222 seconds)


Overclock set to 40%:
[INFO] Threaded video stats: Frames pushed: 14502, Frames dropped: 0.
Average speed: 98.18% (241 seconds)


Overclock set to 37%: 
[INFO] Threaded video stats: Frames pushed: 14837, Frames dropped: 0.
Average speed: 98.64% (246 seconds)

[INFO] Threaded video stats: Frames pushed: 14827, Frames dropped: 0.
Average speed: 98.59% (246 seconds)

So, overall, the underclocked runs do seem to have a higher average speed (as expected, but also helps confirm that the changes are doing something, as well as that the underclocked version takes longer (human time) to get to the same place in the emulation - Deathsmiles averages 99.6% speed at 42% Overclock (vs 96.1% at the original clock speed), but takes 13 seconds longer to run the two attract mode loops. DoDonPachi Dai-Fukkatsu takes 24 more seconds, and averages 98.6% speed at 37% Overclock (up from ~94.2% at the original clock speed).

Have fun.

AdamBeGood

@pjft Superb work, glad it was approved. That was quick!

Thanks to @roslof also!

Darksavior

@pjft Did you mess with blitter delay and see if that does anything? I stumbled onto old posts that it might, but I don't know what combo to use with the underclocking of the cpu.