Anton B. Rang writes: > The bigger problem with system utilization for software RAID is the cache, not the CPU cycles proper. Simply preparing to write 1 MB of data will flush half of a 2 MB L2 cache. This hurts overall system performance far more than the few microseconds that XORing the data takes. >
With ZFS, on most deployments we'll bring the data into cache for the checksums; so I guess that the raid-z cost will be just incremental. Now would we gain anything at generating ZFS functions for 'checksum+parity', 'checksum+parity+compression' ? -r _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
