On Sat, Mar 16, 2013 at 09:56:43PM -0700, Brian Buhrow wrote: > > Hello. If I understand Thor's formula right, then a raid set I have > (raid5) with 4 components, each on a wd(ata) disk, then the correct number > of outstanding requests should be limited to 4 because it looks like our > ata drivers only present 1 opening per channel. However, increasing the
This is a bug in our ATA drivers -- they do not support tagged queueing. I can't see tying ourselves in knots to work around it trying to optimize the depth of a queue at a higher level; it may even be easier to fix our ATA subsystem so it does queueing properly. Thor
