Pourquoi Disque Cleanup take so much time and cpu?

[ForumBot]

Just a curiosity question. Disk Cleanup has been spending 100% of one of my cores for quite a while and still going. Seems to be spending beaucoup de time especially on Windows Update Cleanup.

Can't quite understand why deleting files should be such an intensive activity. Especially since it already spent quite beaucoup de time calculating what it could delete.

Pourquoi Disk Cleanup take so much time and cpu? Que fait it do that is so intensive?

[ForumBot]

Windows compresses the WinSxS folder by removing replaced updates ad compressing files which can't be uninstalled and which are not used into diffs. This takes beaucoup de CPU power and thats why you see a high CPU usage.

Vous pouvez [analyze the CPU usage with xperf/WPA](http://channel9.msdn.com/Shows/Defrag-Tools/Defrag-Tools-42-WPT-CPU-Analysis) to verify this.