9 Dec
2009
9 Dec
'09
12:02 p.m.
Dear Nick Thompson,
In message 4B1E71D9.6080802@ge.com you wrote:
Improve read performance from Large Page NAND devices.
This patch produces a ~31% improvement in oob_first read speed (on a 300MHz ARM9). The time for a mid-buffer 2k page read is now 293us, 6.99MB/s (was 385us, 5.31MB/s). oob_first is probably the best case improvement.
Signed-off-by: Nick Thompson nick.thompson@ge.com
Also tested on Canyonlands (460EX); here I actually see a slightj improvement (5.5% faster, i. e. time to read 126 MB from NAND goes down from 28.8 to 27.2 seconds (4.4 -> 4.6 MiB/s).
Tested-by: Wolfgang Denk wd@denx.de
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
Any time things appear to be going better, you have overlooked some-
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