Storage I/O (Input Output) Issues? Freezing for 2-5 seconds

dankcushions

This post is deleted!

ShootHere

@Oen Well as far as USB sticks go I think SD might be faster. It is fine for PS1 which sort of expects data to get supplied at a lower rate but PSP might want the best speed possible which would be SD or eternal HDD/SSD.

I remember trying to launch a game or two off a USB stick and just they wouldn't even launch (did not extensively try this so it might have been the games themselves) hahaha.

Luckily USB sticks are rather cheap (even the better ones) so trying that might be an easy and cheap experiment. Even if just for parking all other roms on there (which saves quite a few GBs!)

Oen

I'm back with results.

First one thing to note. I am using analog audio out for these tests.

Here is the short version:
Do not buy a SDSQUNC-064G-GN6MA.

For my testing today I used all new parts, fresh out of the boxes.

I setup a RPi3 with a 64GB SDXC card (SDSQUNC-064G-GN6MA). It ran PSX with a bunch of stuttering.
Then I ran a RPi2 setup with a 32GB SDHC card (SDSQUNC-032G-GN6MA). It had 1 hiccup for half a second, but otherwise nice and smooth.

My initial reaction was it must be a RPi3 issue, as this new one with a new card (same model) had the same issues. Then I decided to test the RPi3 with the 32GB SDHC card. It was just as smooth as the RPi2, with the one hiccup around the same point.

All I can figure is that the SDSQUNC-064G-GN6MA can not perform read/writes sequentially or maybe as fast as the SDSQUNC-032G-GN6MA model. Honestly I had no issues with any of the 2D games, as they were loaded in RAM as mentioned above. I have to decide if it is worth replacing those cards. The issue I see, with less room, I won't be putting my PSX games on the SD card. Between the multiple consoles and arcade games, it is pretty maxed out.

Thank you everyone for the suggestions. If you have any further suggestions for testing, or drivers I should update that might resolve this. Please let me know!

Otherwise, do not buy the SDSQUNC-064G-GN6MA model card. Two of them failed to work properly with two different Raspberry Pi 3's.

Edit: I will test the RPi2 with the 64 SDXC card, just to try to further determine if it is a driver issue or something with the RPi3 and that card, or just the card won't perform.

Also I will upload videos so you can see the issues I've been dealing with.

Oen

Here are the videos of my results from earlier:

This is running the Final Fantasy IX v1.1. Fresh install of 4.0 beta 2 from retropie.org.uk, with no additional updates applied.

Oen

Sorry for posting again. One last quick update.

Wanting to suffer a little more, I tried the RPi2 with the 64GB SDXC card. I received the same issues I've seen with the RPi3 and that card model. It was roughly the same results as shown in the second video above (lots of stuttering).

So once again...

Do not buy a SDSQUNC-064G-GN6MA

Thanks again for all the help guys, sorry it was just a hardware issue on my end.

dankcushions

if you still want large storage, you might want to try USB sticks. i get fine I/O performance on psx/ppsspp on an old USB stick

Oen

Yep! Just tested with a small 2GB USB drive, and it worked fine. Now I have to pick up a large USB drive. :)

I guess my suggestion to others would be to buy a smaller SD card, and put most of the ROMs/ISOs on the USB drive.

ShootHere

@Oen Glad to see you fixed your issue. Such things can be maddening to figure out, especially if you spent quite a bit of money on buying "good materials".
I personally use a very cheap SANDISK 32GB (it cost me like €8) and just dumped all my roms on there. I have not tried PSP myself but PS1 and below run just fine.

Hope you get to enjoy your classics now! You can even consider trying the enhanced resolution options for PS1. makes some games look amazing and I notice barely any slowdown.

Oen

I do have one more question. Is there a list of which emulators load the game into RAM, and which load on the fly from the storage media? That way I know what needs to be on the USB drive.

Thanks!

Swampy

I also had the problems with the freezings.
Now I changed the SanDisk ultra 64GB with a SanDisk extreme 64GB.
The problems with psx/psp disappeared.
Also the problems with daphne disappeared.
Before, I had the problem, that the video in daphne pauses for a few seconds, while the sound continues.

Perhaps, somebody will help this!