b...@softjar.se (Johnny Billquist) writes: >Good point. In which case (if I read you right), it's not the reordering >that matters, but the simple case of being able to queue up several >operations, to keep the disk busy.
For sequential reading we are currently limited to 8 operations in flight (uvm readahead). This is less an issue for local disks, but it has a big impact on ISCSI. But it also makes reading through the filesystem faster than reading from the raw disk device. -- -- Michael van Elst Internet: mlel...@serpens.de "A potential Snark may lurk in every tree."