Xbox UWP Memory Usage Limit

0
votes

I have a UWP video player app which runs on Xbox One. The app downloads resources: videos and audio, and then plays once completed. On my laptop, everything works fine and I can play the videos. However on the Xbox, at exactly the same point, I call fopen, which returns a nullptr andGetLastError() returning 112 - ERROR_DISK_FULL.

The total data size is about 7.5GB, but this error occurs less than half way through downloading. Is there some kind of storage limit on the Xbox? I have read this link https://docs.microsoft.com/en-us/windows/uwp/xbox-apps/system-resource-allocation which says that deployed using Visual Studio these limits don't apply. I am currently using VS to debug the application so this should be possible if it is the reason.

Any help on this would be appreciated.

Many thanks, Peter

1
windowsuwpxbox-one
What disk path are you using? - Chuck Walbourn
Hi Chuck, the root path is U:\Users\UserMgr0\AppData\Local\Packages and the folder I am using is LocalState. - pma07pg
In addition the MemoryManager returns AppMemoryUsageLevel as low, and the AppMemoryUsage is way below the limit. - pma07pg
@pma07pg The document you post is the limitation of the RAM, not the disk space. The issue you meet is a simple one that the disk space of your Xbox is running out. - Roy Li - MSFT
Hello Roy, I can confirm this isn't the case. On the Device Portal, on the Performance tab, the 'in use' RAM is about 1.3GB... On my laptop, task manager says it's using around 400MB RAM. I created a simple UWP app which writes N files of size 100mb. At around the 3.8GB mark, I get the same error. There's something else happening, and the ~3.8GB mark matches with when my app seems to stop being able to open new files. - pma07pg

1 Answers

1
votes

To summary the issue. The error shows that the disk space of the Xbox that is used to store files is running out. What the document mentioned is about the memory limitation, not the disk limitation.

There is only a certain amount of space dedicated for file storage as the drive is split into partitions. Just like an external drive, it can be formatted for file storage or games and apps. It can't hold both. So they split the internal drive so there is some file storage with most of the drive dedicated to the storage of games and apps.

The application data folder that you are storing to goes to a drive that they can’t increase, a drive that is NOT the developer drive. It’s a fixed size.