:> performance without it - for reading OR writing. It doesn't matter :> so much for RAID{1,10}, but it matters a whole lot for something like :> RAID-5 where the difference between a spindle-synced read or write :> and a non-spindle-synched read or write can be upwards of 35%. : :If you have RAID5 with I/O sizes that result in full-stripe operations.
Well, 'more then one disk' operations anyway, for random-I/O. Caching takes care of sequential I/O reasonably well but random-I/O goes down the drain for writes if you aren't spindle synced, no matter what the stripe size, and will go down the drain for reads if you cross a stripe - something that is quite common I think. -Matt Matthew Dillon <[EMAIL PROTECTED]> To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message