high memory usage after 0:00u

[prale]

Thanx joximu!
I've read some pages about the memory issue.
Indeed it's normal.

Still a few days back I've noticed it used even swap memory after a few weeks running, but maybe it's using this for caching also.
Anyway I have 2GB swap available, I'll think and hope it won't run out of memory that fast.

I know now, it's only the backup compression that's increasing the cache.

With gzip compression it uses only 20% cpu, with bzip2 it was 88%.
I only have a 60GB disk, so I think I'm going to use the bzip2 again, since disk space is more important to me then cpu usage, and the high cpu usage is only temporary.

Also I think I want the backups at 0:00 again.