id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
8	Native Command Queueing Slows Access	rlwalsh	cjm	"When I build Firefox, I usually have gmake run two processes in parallel ('-j2') and it takes 38 minutes.  With NCQ enabled, it takes 45 minutes.  I just tried a build running four processes ('-j4').  Without NCQ, it took 33 minutes; with NCQ, it was 39.5 minutes.

I frequently use the ""deltree"" util to delete my entire build tree which has 100,000(?) files in several thousand directories.  With NCQ, it is noticeably slower (almost painfully slow).

The system:
- Intel DG43GT board with a ""G43 Express"" chipset including an 82801JIB I/O controller (""ICH10"")
- Core2 Quad @ 2.5gnz with VT (Q8300 SLGUR)
- 2gb memory
- Seagate ST3500418AS 500gb drive using JFS with a 64mb cache
- eCS 2.0 using os2ahci.add copied from my 2.1 installation
"	defect	closed	major		driver		fixed