On 22 Nov 2010, at 23:56, Achim Gsell wrote: > > Sounds reasonable. But I have the same problem with a 9GB disk- > cache, a 1GB disk-cache, 1GB mem-cache and a 256kB mem-cache: I can > write 6 GB pretty fast then performance drops to < 3MB/s ... How much memory does your test machine have? S.