RE: JFFS3 & performance

Joakim Tjernlund
2005-01-18T15:51:03Z

>
> There was interesting offer to calculate checksum from the end of buffer
> since it implies better L1 cache behaviour. Then there was another
> argument against this idea - it was standed that some CPUs might be
> capable to prefetch data forward and not capable to do it backward.

Sorry for being so quiet lately, work is a bit much currently.

Another idea is to calculate the checksum while reading/writing(much like
the networking code does). That would probably require support from the MTD layer
and that the checksum is stored at the end of the JFFS3 node.

Jocke