Hi,
I've never been really happy with my NetBSD RAIDframe NAS, never really got the speed I was supposed to even with the right alignment / raid layout etc. Today I dug into `dkctl(8)' while searching if cache was enabled for read and write, and I came across the "strategy" command. Long story short, changing from priocscan to fcfs strategy multiplied my NAS's write speed by 6! I changed the strategy for all disk members: # dkctl wd0 strategy fcfs # dkctl wd1 strategy fcfs # dkctl wd2 strategy fcfs and also for the RAIDframe: # dkctl raid0 strategy fcfs /dev/rraid0d: priocscan -> fcfs as changing it only for the disk members was apparently counter-productive. And there we go, from a 40/50MB/s write average to a stunning 200 to 300MB/s, which is more like what the disks can theroically do. Could anyone with some background on these strategies explain what's behind the curtain? I couldn't really find precise documentation on this matter... Thanks, ---------------------------------------------------------------- Emile `iMil' Heitor * <imil@{home.imil.net,NetBSD.org,gcu.info}> _ | http://imil.net | ASCII ribbon campaign ( ) | http://www.NetBSD.org | - against HTML email X | http://gcu.info | & vCards / \