On Dienstag, 17. April 2007, Matthias Fechner wrote: > Hello Volker, > > * Hemmann, Volker Armin <[EMAIL PROTECTED]> [17-04-07 10:11]: > > which is correct. You don't set dma for SATA devices and you don't do it > > with hdparm. > > ah ok, thx for that information. > But I have a problem. If I copy some data on disks the system is at a > very high load and extremely slow (load at 2.5). > > If I record movies with VDR every recording is damaged (distortions). > > So I thought it is a problem of missing DMA. > > Is the SATA driver so bad and produces a such high CPU load?
Dunno, I am recording fine and sata is fast (uli based board, jmicron controller). There is a lot of stuff that can go wrong. IO-scheduler (which one are you using), preemption (don't use forced preemption), ticks... The lower the latency, the lower the troughput, for example.... -- [EMAIL PROTECTED] mailing list
