iCloud used storage incorrect

[Susurs]

Hi!
When I look at the iCloud data under my Apple ID it says that 9.7Gb out of 20Gb are used. Hovewer, when I further press ‘manage storage’ it says that the backup size is 11.5Gb. Furthermore, when I look at the specific backup, it says - 12.33Gb... Next backup size - 7Mb.

What is wrong? Is some data not completely uploded in to the iCloud.

Do you have the same issue?

 

[Tavicu]

Next backup size is the new files that needs to be uploaded. Only the files that had changed since the last backup. It will not upload everything from zero.

Also probably in manage storage it shows the actual size and in iCloud it's compressed somehow ...

 

[Susurs]

Does used space on iCloud corresponds to the actual backup size for you? Can anyone share an example?

P.S. I deleted the backup and started it again. Same 9.7Gb taken on the iCloud. Well...the backup process took only around 1 minute (a bit more) and showed up as 9.7Gb. Even it the network upload speed is around 80Mbps, it cannot in practice upload 10Gb of data to the cloud in such a short tame. Is it just calculating the space needed and uploading something to the cloud later as a background process (even if it shows that the backup was completed at a aspecific time)?