[Sablevm-developer] bidirectional object speedup

[Archie C. <ar...@de...>]

Etienne-

It was interesting to read in the dissertation that the bidirectional
object layout didn't contribute as much speedup as one might expect.

I wonder about trying a slight modification to help this- changing
the way reference arrays are indexed so that they array elements
are stored in-order instead of backwards. This would require a
little extra computation, since the array length must be included
in every element access, but the theory is that most array elements
are read in-order and that memory is optimized for sequential access
(similar to filesystems) rather than reverse access.

I don't know enough specifics about whether this really makes sense
or not, but it might make for an interesting experiment.

Just a thought :-)

Cheers,
-Archie

__________________________________________________________________________
Archie Cobbs     *     Packet Design     *     http://www.packetdesign.com