On Thursday 28 February 2008 09:16, Daniël Mantione wrote: > Memory access. What happens is that the non-packed version causes > more cache misses.
Please elaborate. If the (unaligned) data is crossing a cache-line, thus causing two full cache-line reads, I'd understand that, but once it's in the cache, it wouldn't matter anymore? IOW: How can a packed (thus smaller) record cause more cache misses than a better aligned (but bigger) one? That it can in certain circumstances, I'd understand, but as a general rule? Vinzent. _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
