> DIRECT IO is a set of performance optimisations to circumvent shortcomings of > a given filesystem.
Direct I/O as generally understood (i.e. not UFS-specific) is an optimization which allows data to be transferred directly between user data buffers and disk, without a memory-to-memory copy. This isn't related to a particular file system. (UFS direct I/O also changes concurrency semantics; but most other file systems separate these two concepts.) Anton This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
