With many snap, I think there are problems with the cache(?)

[Caligo77]

With many snap, I think there are problems with the cache(?)

[nicolas-van]

Hello,

LightningMF does not store all the roms info in the RAM. It saves them in a SQLite database. The program is optimized to never load too much information in the RAM. Having 26 000, 10 000 or 100 000 roms registered in MAME would not change anything, it would only take more time when you make a "Load ROM Data".

So, your interpretation of your problem is wrong. If you have a problem with the rom data stored by lightning you can just erase the SQLite database by removing ~/.lightningmf/.

Bye bye.

[Caligo77]

Maybe I explained myself wrong. I have a problem with a large number of snap. I have not added many roms, only 3, but I had put 126000 snap (all those of mame). I am using a virtual machine, and I set one gigabyte of RAM, if I put in the cache SQlite 126000 snap, lightingmf crashes. I think it should start erasing. Thank you

[nicolas-van]

That's not a problem either. LMF doesn't load the images in its database, it only checks if the image exists when it displays a game.

[Caligo77]

So I think that is just the updating phase of DB when there is a large number of snap to create problems with a low amount of RAM. I repeat, I put in 126000 files snap. Probably not an error but is simply a limit SQLite when writing large amounts of data but there is little ram. Tnx

[nicolas-van]

I just told you that the snaps are not in the DB.

[Caligo77]

Okay, I believe you. But not having read the code I can only speculate. But I do not understand what the resulting latency when loading 3 Roms and 126000 Snaps. This always happens to me lately and lihntingmf freezes, seems like it's in a loop. Simplify I'm telling you what happened to me.

[nicolas-van]

When you click on "Load ROM Data" LMF does all the data from MAME. This is independent on the number of files you have, but it can take a lot of time before it completes, potentially multiple minutes.

[Caligo77]

Ok, thanks for your support. If I wanted to advise you to "recycle" the code of lightingmf, to handle Vice, an emulator of the Commodore 64. There is still no one who has implemented a frontend to manage it under linux, you would like to develop it? Communities who love retrogaming would thank you very much.