Alexander Motin <m...@freebsd.org> writes: > Dag-Erling Smørgrav <d...@des.no> writes: > > Most pseudo-raid kit has nifty features like checksum offloading, > > composite writes etc. which can improve performance considerably. You > > can't access those from GEOM. > Have you ever seen them documented?
ISTR I got the info from sos@ at some point. I have several Promise cards lying around and was working onm RAID5 offloading, but I stopped when ZFS became usable. > Does the need to specifically handle dozens of incompatible > implementations with limited resources worth those (probably not > major) benefits? The details probably vary from controller to controller, but the capabilities are pretty much the same: perform the same write operation to several disks at once, split a write operation across several disks, compute and write parity. IIRC, composite writes are already supported but not used. DES -- Dag-Erling Smørgrav - d...@des.no _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
