> an x86 will fetch them on any alignment, so malloc() is not obliged to
> align at all, whereas for performance on an x86 you want to align on a
> paragraph boundary (16 bytes?).
With a 128 bit memory bus, there are obvious advantages to aligning on 128
bit boundaries, however cache-line association maybe more important
depending on your application.
If you are really that low on memory, you probably (a) don't have a
buswidth anything like this and (b) shouldn't be using malloc, which
has significant overheads anyway.
Julian.
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