freebsd-src/sbin/geom
Pawel Jakub Dawidek f5a2f7feac Implement new reading algorithm, which will use parity component for reading
as well, even if device is in complete state.
I observe 40% of speed-up with this option for random read operations,
but slowdown for sequential reads.
Basically, without this option reading from a RAID3 device built from 5
components (c0-c4) looks like this:

	Request no.	Used components
	1		c0+c1+c2+c3
	2		c0+c1+c2+c3
	3		c0+c1+c2+c3

With the new feature:

	Request no.	Used components
	1		c0+c1+c2+c3
	2		(c1^c2^c3^c4)+c1+c2+c3
	3		c0+(c0^c2^c3^c4)+c2+c3
	4		c0+c1+(c0^c1^c3^c4)+c3
	5		c0+c1+c2+(c0^c1^c2^c4)
	6		c0+c1+c2+c3
	[...]
2004-08-21 18:11:46 +00:00
..
class Implement new reading algorithm, which will use parity component for reading 2004-08-21 18:11:46 +00:00
core - Add a manual page for graid3(8) utility. 2004-08-18 16:41:30 +00:00
misc MFp4: gmirror(8) is coming soon, and we need g_metadata_read() there. 2004-07-05 02:06:44 +00:00
Makefile
Makefile.inc Don't use version number in library name. The library version is checked 2004-08-02 09:05:29 +00:00