JFFS3 & performance
dvrabel at arcom.com
Fri Dec 17 06:33:42 EST 2004
Joakim Tjernlund wrote:
> 2) Consider another checksum algorithm. Crc32 is very expensive
> and JFFS2 suffered severely in the early days. Now that crc32 is
> very optimized that problem is less visible, but crc32 is still
> expensive. Maybe an Adler32 checksum is good enough or a crc16?
Does anyone have links to the profilling data that showed this?
(Also, I wouldn't have thought crc16 on 32 bit archs would have any
significant performance benefits. But since I don't know either the
crc16 or crc32 algorithms... *shrug*)
David Vrabel, Design Engineer
Arcom, Clifton Road Tel: +44 (0)1223 411200 ext. 3233
Cambridge CB1 7EA, UK Web: http://www.arcom.com/
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