> 7.4beta5 offers more throughput. One significant difference I see is in
> the oprofile for the database. For the additional 7% increase in the
> metric, there are about 32% less ticks in SearchCatCache.
Hmm. I have been profiling PG for some years now, and I cannot remember
ever seeing a profile in which SearchCatCache topped everything else
(the usual suspects for me are palloc/pfree support code). Can you give
any explanation why it looks like that? Can your profiling code tell
where the hotspot call sites of SearchCatCache are?
regards, tom lane
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