On Wed, Aug 17, 2016 at 4:16 PM, Andres Freund <and...@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

Attachment: cache-misses-cluster-presorted-flamegraph.svg.gz
Description: GNU Zip compressed data

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