One nit ... the parity computation is 'in the noise' as far as the CPU goes, but it tends to flush the CPU caches (or rather, replace useful cached data with parity), which affects application performance.
Modern CPU architectures (including x86/SPARC) provide instructions which allow data to be streamed through the cache without actually replacing everything else, but Solaris doesn't take advantage of these yet. This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
