On Thu, Jan 1, 2015 at 3:04 PM, Andres Freund <andres@2ndquadrant.com> wrote:
>>That's true, but if you don't align the beginnings of the allocations,
>>then it's a lot more complicated for the code to properly align stuff
>>within the allocation. It's got to insert a variable amount of
>>padding based on the alignment it happens to get.
>
> Hm? Allocate +PG_CACHELINE_SIZE and do var = CACHELINEALIGN(var).
Meh. I guess that will work, but I see little advantage in it.
Cache-line aligning the allocations is simple and, not of no value, of
long precedent.
--
Robert Haas
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