On Thu, Jan 1, 2015 at 3:04 PM, Andres Freund <and...@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
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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