freebsd-skq/sys/ia64
Paul Saab c794ceb56a Implement write combining for crashdumps. This is useful when
write caching is disabled on both SCSI and IDE disks where large
memory dumps could take up to an hour to complete.

Taking an i386 scsi based system with 512MB of ram and timing (in
seconds) how long it took to complete a dump, the following results
were obtained:

Before:				After:
	WCE           TIME		WCE           TIME
	------------------		------------------
	1	141.820972		1	 15.600111
	0	797.265072		0	 65.480465

Obtained from:	Yahoo!
Reviewed by:	peter
2000-10-17 10:05:49 +00:00
..
conf * Add rudimentary DDB support (no kgdb, no backtrace, no single step). 2000-10-10 14:57:10 +00:00
ia64 Implement write combining for crashdumps. This is useful when 2000-10-17 10:05:49 +00:00
include Implement write combining for crashdumps. This is useful when 2000-10-17 10:05:49 +00:00
isa