On Wed, Aug 17, 2016 at 4:16 PM, Andres Freund <andres@anarazel.de> wrote:
>> Does anyone have any ideas on how to:
>>
>> 1). Directly address the reform_and_rewrite_tuple() bottleneck.
>
> What part of is actually the expensive bit? It does a whole lot of
> things. Forming/Deforming tuples, the hash lookups in
> rewrite_heap_tuple(), ...?
Perhaps the attached svg "flamegraph" will give you some idea. This is
based on the "perf cache-misses" event type.
--
Peter Geoghegan
